Before you install PHP CompatInfo, you will need an operating system with PHP 5.3.2 or later installed,

CompatInfo requires the json, libxml, pdo (sqlite driver), pcre, and spl extensions. These extensions are usually compiled and enabled by default.

Put a file named composer.json at the root of your project, with the content below:

{
    "require": {
        "bartlett/php-compatinfo": "4.4.0"
    }
}

And ask Composer to install the dependencies:

$ php composer.phar install

	With composer install or create-project commands, if you want to disable installation of require-dev packages (doctrine/cache, psr/log, monolog/monolog, bartlett/phpunit-loggertestlistener), don’t forget to specify the --no-dev option.

	You can also use Composer to create a new project from an existing CompatInfo package. This is the equivalent of doing a git clone checkout followed by a composer install of the vendors. $ php composer.phar create-project bartlett/php-compatinfo /path/to/install 4.4.0 Where /path/to/install is your install directory.

The recommended way for newbies, or just to have a look on features of this library, is to download a PHP Archive that contain all required dependencies of PHP CompatInfo bundled in a single file.

$ wget http://bartlett.laurent-laville.org/get/phpcompatinfo-4.4.0.phar
$ chmod +x phpcompatinfo-4.4.0.phar
$ mv phpcompatinfo-4.4.0.phar /usr/local/bin/phpcompatinfo
$ phpcompatinfo

You can also immediately use the PHAR after you have downloaded it.

$ wget http://bartlett.laurent-laville.org/get/phpcompatinfo-4.4.0.phar
$ php phpcompatinfo-4.4.0.phar

There are lot of way to filter your data source. Each rule follow the syntax of Symfony Finder Component.

The Location is the only mandatory criteria. It tells the Finder which directory to use for the search.

In a simple directory. 

    {
        "in": ". as current"
    }

	If you want to identify a data source easily by a short name, the alias (right of as) is compared with the --alias option constraint.

Search in several locations. 

    {
        "in": ". as current",
        "in": "src/"
    }

Use wildcard characters to search in the directories matching a pattern: 

    {
        "in": "src/Bartlett/R*"
    }

Search directly in archives (phar, zip, tar) with the phar:// protocol. 

    {
        "in": "phar://path/to/archive.zip"
    }

Restrict files by name and/or extension. 

    {
        "in": "phar://path/to/archive.zip",
        "name": "*.php"
    }

Restrict files by size. 

    {
        "in": "phar://path/to/archive.zip",
        "name": "*.php",
        "size": "< 10K"
    }

Restrict files by last modified dates. 

    {
        "in": ". as current",
        "date": "since yesterday"
    }

By default, the Finder recursively traverse directories.

Restrict the depth of traversing. 

    {
        "in": ". as current",
        "depth": "< 3"
    }

Restrict location by only one directory. 

    {
        "in": ". as current",
        "exclude": "vendor"
    }

Restrict location by 1 or more directories. 

    {
        "in": ". as current",
        "exclude": ["vendor", "tests"]
    }

There are a number of optional plugins you can use along with CompatInfo to add more capabilities.

Take an example with the Logger plugin.

In your phpcompatinfo.json configuration file, add in plugins section the following entry:

    {
        "name": "Logger",
        "class": "Bartlett\\Reflect\\Plugin\\LogPlugin"
    }

	The LogPlugin used by default the Bartlett\Reflect\Plugin\Log\DefaultLogger class that write results to error_log

8.2.1. Cache Plugin

	Available only since version 3.3.0

In your phpcompatinfo.json configuration file, add in plugins section the following entry:

    {
        "name": "Cache",
        "class": "Bartlett\\Reflect\\Plugin\\CachePlugin",
        "options": {
            "adapter": "DoctrineCacheAdapter",
            "backend": {
                "class": "Doctrine\\Common\\Cache\\FilesystemCache",
                "args": [
                    "%{TEMP}/bartlett/cache"
                ]
            }
        }
    }

	You may use any environment variable that will be replaced, at run-time, by their value. E.g: TEMP, HOME

	Since release 3.3.0, the HOME syntax is compatible Linux/Windows.

	Take care to use the same configuration as in PHP Reflect, or you should not share the cache results.

	If you want to used the same options (Doctrine adapter with file cache) as above, you can used shortcut syntax like this. { "name": "Cache", "class": "Bartlett\\Reflect\\Plugin\\CachePlugin", "options": [] }

In previous configuration we used the Doctrine Cache adapter and its File system backend. See the same configuration applied with other SAPI, in Section 19.3, “File cache”

8.2.2. Log Plugin

	Available only since version 3.4.0

In your phpcompatinfo.json configuration file, add in plugins section the following entry:

    {
        "name": "Log",
        "class": "Bartlett\\Reflect\\Plugin\\LogPlugin"
    }

Where options key identify an optional class logger (fully qualified. E.g YourNamespace\YourLogger).

When options key is not provided, log plugin used the default Reflect logger bundled with distribution. See Bartlett\Reflect\Plugin\Log\DefaultLogger that write results to the error log system.

See the Developer Guide for definition examples of some loggers Section 20.3, “Using your private logger” or Section 20.4, “Using Monolog”

There are default analysers you can use, but you are free to add your owns.

In your phpcompatinfo.json configuration file, add in analysers section (for example) the following entry:

    {
        "name": "MyAnalyser",
        "class": "Your\\Analysers\\MyAnalyser"
    }

Your analyser should implement both interfaces Bartlett\Reflect\Analyser\AnalyserInterface and PhpParser\NodeVisitor.

Then to use it in command line :

$ phpcompatinfo analyser:run /path/to/datasource my

	my identify your analyser (prefix in lower case of MyAnalyser class)

Without plugins and analysers sections in your phpcompatinfo.json configuration file, when you invoke the phpcompatinfo command, you should obtain the following commands and options :

        _            ____                            _   ___        __
  _ __ | |__  _ __  / ___|___  _ __ ___  _ __   __ _| |_|_ _|_ __  / _| ___
 | '_ \| '_ \| '_ \| |   / _ \| '_ ` _ \| '_ \ / _` | __|| || '_ \| |_ / _ \
 | |_) | | | | |_) | |__| (_) | | | | | | |_) | (_| | |_ | || | | |  _| (_) |
 | .__/|_| |_| .__/ \____\___/|_| |_| |_| .__/ \__,_|\__|___|_| |_|_|  \___/
 |_|         |_|                        |_|

phpCompatInfo version 4.4.0 DB built Jul 11 2015 09:22:57 CEST

Usage:
 [options] command [arguments]

Options:
 --help (-h)           Display this help message
 --quiet (-q)          Do not output any message
 --verbose (-v|vv|vvv) Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug
 --version (-V)        Display this application version
 --ansi                Force ANSI output
 --no-ansi             Disable ANSI output
 --no-interaction (-n) Do not ask any interactive question
 --no-plugins          Disables all plugins.
 --profile             Display timing and memory usage information.
 --progress            Show progress bar.
 --output              Write results to file or URL.
 --manifest            Show which versions of dependencies are bundled.

Available commands:
 help                  Displays help for a command
 list                  Lists commands
analyser
 analyser:list         List all analysers available.
 analyser:run          Analyse a data source and display results.
cache
 cache:clear           Clear cache (any adapter and backend).
config
 config:validate       Validates a JSON configuration file.
diagnose
 diagnose:run          Diagnoses the system to identify common errors.
diagram
 diagram:class         Generates diagram about a user class present in a data source.
 diagram:package       Generates diagram about namespaces in a data source.
plugin
 plugin:list           List all plugins installed.
reference
 reference:list        List all references supported.
 reference:show        Show information about a reference.
reflection
 reflection:class      Reports information about a user class present in a data source.
 reflection:function   Reports information about a user function present in a data source.

Auto-Diagnose:

Checking php settings:
- Requires PHP 5.3.2 or better OK
- php.ini file loaded C:\UwAmp\bin\php\php-5.6.9\php.ini
- date extension loaded YES
- json extension loaded YES
- pcre extension loaded YES
- phar extension loaded YES
- reflection extension loaded YES
- spl extension loaded YES
- tokenizer extension loaded YES

config:validate	Validates an optional JSON config file. $ phpcompatinfo config:validate "/etc/phpcompatinfo.json" config file is valid.
diagnose:run	Diagnoses the system to identify common errors. $ phpcompatinfo diagnose:run Checking php settings: - Requires PHP 5.3.2 or better OK - php.ini file loaded C:\UwAmp\bin\php\php-5.6.9\php.ini - date extension loaded YES - json extension loaded YES - pcre extension loaded YES - phar extension loaded YES - reflection extension loaded YES - spl extension loaded YES - tokenizer extension loaded YES Use verbose level 2 for more details, and level 3 to get raw response
diagram:class	Generates diagram about a user class present in a data source. $ phpcompatinfo diagram:class Bartlett\Reflect\Plugin\LogPlugin ./src
diagram:package	Generates diagram about namespaces in a data source. $ phpcompatinfo diagram:package --engine=graphviz ./src
plugin:list	List all plugins configured (and correctly installed) in plugins section of your phpcompatinfo.json config file. Without plugins, you will get.  $ phpcompatinfo plugin:list No plugin installed. With only Cache plugin configured, you will get.  $ phpcompatinfo plugin:list Plugin Class Events Subscribed Bartlett\Reflect\Plugin\CachePlugin reflect.progress reflect.success reflect.complete
analyser:list	List all analysers configured in analysers section of your phpcompatinfo.json config file, and available by default. With only default analysers, you will get.  $ phpcompatinfo analyser:list Analyser Name Analyser Class loc Bartlett\Reflect\Analyser\LocAnalyser reflection Bartlett\Reflect\Analyser\ReflectionAnalyser structure Bartlett\Reflect\Analyser\StructureAnalyser compatibility Bartlett\CompatInfo\Analyser\CompatibilityAnalyser
analyser:run	Parse a data source and display results. May vary depending of the data source and analyser used. With compatibility analyser and the CompatInfo source code, you will get something like.  $ phpcompatinfo analyser:run . Possible alternative (if you use the default json config file).  $ phpcompatinfo analyser:run --alias current Data Source Analysed Directories 11 Files 13 Extensions Analysis Extension Matches REF EXT min/Max PHP min/Max PHP all Core Core 4.0.0 5.3.0 PDO PDO 5.1.0 5.1.0 curl curl 4.0.2 4.0.2 intl intl 2.0.0b1 5.3.7 libxml libxml 5.1.0 5.1.0 openssl openssl 5.2.0 5.2.0 pcre pcre 4.0.0 4.0.0 spl spl 5.1.0 5.1.0 standard standard 4.0.0 4.0.0 5.3.2 Total [9] 5.3.7 Namespaces Analysis Namespace Matches REF EXT min/Max PHP min/Max PHP all +global Core 4.0.0 Bartlett\CompatInfo user 5.3.0 Bartlett\CompatInfo\Analyser user 5.3.0 Bartlett\CompatInfo\Api user 5.3.0 5.3.2 Bartlett\CompatInfo\Api\V3 user 5.3.0 Bartlett\CompatInfo\Collection user 5.3.0 Bartlett\CompatInfo\Console user 5.3.0 Bartlett\CompatInfo\Console\Formatter user 5.3.0 Bartlett\CompatInfo\Output user 5.3.0 Bartlett\CompatInfo\PhpParser user 5.3.0 Bartlett\CompatInfo\Reference user 5.3.0 Bartlett\CompatInfo\Util user 5.3.0 Total [12] 5.3.0 5.3.2 Interfaces Analysis Interface Matches REF EXT min/Max PHP min/Max PHP all Bartlett\CompatInfo\Reference\ReferenceInterface 1 user 5.3.0 Total [1] 5.3.0 No trait found Classes Analysis Class Matches REF EXT min/Max PHP min/Max PHP all Bartlett\CompatInfo\Analyser\CompatibilityAnalyser user 5.3.0 Bartlett\CompatInfo\Api\Reference user 5.3.0 5.3.2 Bartlett\CompatInfo\Api\V3\Reference user 5.3.0 Bartlett\CompatInfo\Collection\ReferenceCollection 1 user 5.3.0 Bartlett\CompatInfo\Console\Application user 5.3.0 Bartlett\CompatInfo\Console\Formatter\CompatibilityOutputFormatter user 5.3.0 Bartlett\CompatInfo\Environment 4 user 5.3.0 Bartlett\CompatInfo\Output\Reference user 5.3.0 Bartlett\CompatInfo\PhpParser\ConditionalCodeNodeProcessor 1 user 5.3.0 Bartlett\CompatInfo\Reference\ExtensionFactory 2 user 5.3.0 Bartlett\CompatInfo\Reference\SqliteStorage 1 user 5.3.0 Bartlett\CompatInfo\Util\Version 10 user 5.3.0 U Bartlett\Reflect\Analyser\AbstractAnalyser 1 user 5.3.0 U Bartlett\Reflect\Api\BaseApi 1 user 5.3.0 U Bartlett\Reflect\Api\V3\Common 1 user 5.3.0 U Bartlett\Reflect\Console\Application 1 user 5.3.0 U Bartlett\Reflect\Console\Formatter\OutputFormatter 2 user 5.3.0 U Bartlett\Reflect\PhpParser\NodeProcessorAbstract 1 user 5.3.0 U Doctrine\Common\Collections\AbstractLazyCollection 1 user 5.3.0 U Doctrine\Common\Collections\ArrayCollection 1 user 5.3.0 PDO 2 PDO 5.1.0 5.1.0 U PhpParser\Node 21 user 5.3.0 U PhpParser\Node\Name 1 user 5.3.0 RuntimeException 1 spl 5.1.0 5.1.0 U Symfony\Component\Console\Helper\TableSeparator 3 user 5.3.0 U Symfony\Component\Console\Output\OutputInterface 4 user 5.3.0 parent 5 Core 5.0.0 5.0.0 self 11 Core 5.0.0 5.0.0 stdClass 1 Core 4.0.0 4.0.0 Total [29] 5.3.0 5.3.2 Functions Analysis Function Matches REF EXT min/Max PHP min/Max array_key_exists 7 standard 4.0.7 4.0.7 array_map 2 standard 4.0.6 4.0.6 array_merge 3 standard 4.0.0 4.0.0 array_pop 6 standard 4.0.0 4.0.0 array_shift 2 standard 4.0.0 4.0.0 array_slice 1 standard 4.0.0 4.0.0 array_values 1 standard 4.0.0 4.0.0 closure-73-75 user 5.3.0 copy 1 standard 4.0.0 4.0.0 count 14 standard 4.0.0 4.0.0 C curl_version 1 curl 4.0.2 4.0.2 defined 4 Core 4.0.0 4.0.0 dirname 3 standard 4.0.0 4.0.0 each 2 Core 4.0.0 4.0.0 end 3 standard 4.0.0 4.0.0 explode 2 standard 4.0.0 4.0.0 extension_loaded 1 Core 4.0.0 4.0.0 file_exists 2 standard 4.0.0 4.0.0 function_exists 1 Core 4.0.0 4.0.0 in_array 10 standard 4.0.0 4.0.0 is_array 1 standard 4.0.0 4.0.0 is_callable 1 standard 4.0.6 4.0.6 is_string 10 standard 4.0.0 4.0.0 ksort 3 standard 4.0.0 4.0.0 ltrim 1 standard 4.0.0 4.0.0 mkdir 1 standard 4.0.0 4.0.0 phpversion 2 standard 4.0.0 4.0.0 preg_match 2 pcre 4.0.0 4.0.0 sha1_file 2 standard 4.3.0 4.3.0 sprintf 26 standard 4.0.0 4.0.0 str_replace 1 standard 4.0.0 4.0.0 strcasecmp 4 Core 4.0.0 4.0.0 stream_resolve_include_path 1 standard 5.3.2 5.3.2 strpos 2 standard 4.0.0 4.0.0 strtolower 1 standard 4.0.0 4.0.0 substr 2 standard 4.0.0 4.0.0 sys_get_temp_dir 1 standard 5.2.1 5.2.1 ucfirst 5 standard 4.0.0 4.0.0 version_compare 9 standard 4.0.7 4.0.7 Total [39] 5.3.2 Constants Analysis Constant Matches REF EXT min/Max PHP min/Max C INTL_ICU_VERSION 2 intl 2.0.0b1 5.3.7 LIBXML_DOTTED_VERSION 1 libxml 5.1.0 5.1.0 LIBXML_VERSION 1 libxml 5.1.0 5.1.0 C OPENSSL_VERSION_NUMBER 1 openssl 5.2.0 5.2.0 C OPENSSL_VERSION_TEXT 1 openssl 5.2.0 5.2.0 PHP_EOL 5 Core 4.3.10 4.3.10 PHP_VERSION 4 Core 4.0.0 4.0.0 __DIR__ 1 Core 5.3.0 5.3.0 false 14 Core 4.0.0 4.0.0 null 15 Core 4.0.0 4.0.0 true 10 Core 4.0.0 4.0.0 Total [11] 5.3.0 Conditions Analysis Condition Matches REF EXT min/Max PHP min/Max defined(INTL_ICU_VERSION) 2 intl 2.0.0b1 5.3.7 defined(OPENSSL_VERSION_NUMBER) 1 openssl 5.2.0 5.2.0 defined(OPENSSL_VERSION_TEXT) 1 openssl 5.2.0 5.2.0 function_exists(curl_version) 1 curl 4.0.2 4.0.2 Total [4] 5.3.7 Requires PHP 5.3.2 (min), PHP 5.3.2 (all) The PHP all column tell us which version is required when all code features are used Since version 4.2, you can filter results with a user closure.  $ phpcompatinfo analyser:run --filter=YourFilters.php . Learn more on chapter Chapter 23, Build your Filters
reflection:class	Reports information about a user class present in a data source. With the CompatInfo source code (./src), and Bartlett\CompatInfo\Environment class.  $ phpcompatinfo reflection:class Bartlett\CompatInfo\Environment ./src Class [ <user> class Bartlett\CompatInfo\Environment ] { @@ C:\home\github\php-compat-info\src\Bartlett\CompatInfo\Environment.php 28 - 73 - Constants [0] { } - Properties [0] { } - Methods [2] { Method [ <user> public method initRefDb ] { @@ C:\home\github\php-compat-info\src\Bartlett\CompatInfo\Environment.php 35 - 55 - Parameters [0] { } } Method [ <user> public method versionRefDb ] { @@ C:\home\github\php-compat-info\src\Bartlett\CompatInfo\Environment.php 62 - 72 - Parameters [0] { } } } }

Since version 2.12, there is a new progress bar (ALA PHPUnit).

PHP_CompatInfo 2.12.0 by Laurent Laville

....CC......................................................  60 / 128 ( 46%)
....C..C..........................................C....C.... 120 / 128 ( 93%)
.C.....C

With version 3.2, the progress bar (ALA Symfony Console Progress Helper) is activated with the first verbose level (-v). For example :

$ phpcompatinfo -v analyser:run <SOURCE>

Renders

    3/128 [>---------------------------]   0% Elapsed: 2 secs

Where <SOURCE> identify the data source, directly in CompatInfo 2.26, and via the JSON configuration file in version 3.2

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive <SOURCE>
or
$ phpcompatinfo print --reference=ALL --recursive --report summary <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE>
or
$ phpcompatinfo analyser:run <SOURCE> summary

And with additionals reports :

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report extension <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> extension

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report namespace <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> namespace

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report trait <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> trait

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report interface <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> interface

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report class <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> class

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report function <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> function

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report constant <SOURCE>

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> constant

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report global <SOURCE>

	Feature not provided by version 3.2

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report condition <SOURCE>

Version 3.4. 

$ phpcompatinfo analyser:run <SOURCE> condition

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report token <SOURCE>

	Feature not provided by version 3.2

Version 2.26. 

$ phpcompatinfo print --reference=ALL --recursive --report xml <SOURCE>

	Feature not provided by version 3.2

Version 2.26. 

$ phpcompatinfo -v print --reference=ALL --report source <SOURCE>

Version 3.2. 

$ phpcompatinfo provider:display <SOURCE>

	In CompatInfo 3.2, the Finder recursively traverse directories, while it’s not true in version 2.26

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo
    recursive="false"
    fileExtensions="php, inc, phtml"
    >

    <!-- ... -->
</phpcompatinfo>

JSON configuration 3.2. 

{
    "source-providers": [
        {
            "in": ". as current",
            "name": "/\\.(php|inc|phtml)$/"
        }
    ],
}

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo
    consoleProgress="true"
    verbose="false"
    >

    <!-- ... -->
</phpcompatinfo>

Use the first verbose level (-v) with phpcompatinfo while running the analyser:run command.

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo
    cacheDriver="file"
    >

    <!-- ... -->
</phpcompatinfo>

	Version 3.2 is able to cache parsing results only with other SAPI than CLI. See the Developer Guide.

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo>

    <cache id="file">
        <options>
            <gc_probability>1</gc_probability>
            <gc_maxlifetime>86400</gc_maxlifetime>
        </options>
    </cache>

</phpcompatinfo>

	Version 3.2 does not provide yet ability to cache parsing results in CLI mode.

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo>

    <references>
        <reference name="Core" />
        <reference name="standard" />
    </references>

</phpcompatinfo>

	Version 3.2 does not provide ability to load reference depending of rules in the configuration file.

All references are either pre-loaded (Prefetch Strategy) or loaded only when detected (AutoDiscover Strategy).

See Part VI, “References included”

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo>

    <php>
        <ini name="memory_limit" value="140M" />
        <ini name="short_open_tag" />
        <ini name="zend.ze1_compatibility_mode" value="false" />
    </php>

</phpcompatinfo>

	Version 3.2 does not provide ability to change PHP settings at run-time.

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo>

    <excludes>
        <exclude id="demo">
            <directory name=".*\/Zend\/.*" />
            <file name=".*\.php5" />
            <extension name="xdebug" />
            <interface name="SplSubject" />
            <trait name="^S" />
            <class name=".*Compat.*" />
            <function name="ereg.*" />
            <function name="debug_print_backtrace" />
            <constant name="T_USE" />
        </exclude>
    </excludes>

</phpcompatinfo>

	Version 3.2 does not provide ability to exclude elements (class, trait, …), but you can exclude files or directories with the Finder. See source-providers in the JSON configuration file. See Chapter 8, The Json Configuration File

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo>

    <listeners>
        <listener class="className" file="/path/to/filename">
            <arguments>
            </arguments>
        </listener>
    </listeners>

</phpcompatinfo>

	Version 3.2 provide this feature with the Symfony EventDispatcher component.

See Section 15.2, “Plugins”

XML configuration 2.26. 

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo>

    <plugins>
        <reference name="MyReference"
            class="PEAR_CompatInfo"
            file="/path/to/PEARCompatInfo.php">
            <arguments>
            </arguments>
        </reference>
    </plugins>

</phpcompatinfo>

	Version 3.2 does not provide ability to select a custom References list.

All references are either pre-loaded (Prefetch Strategy) or loaded only when detected (AutoDiscover Strategy).

See Part VI, “References included”

	By default, recursive option is set to false in CompatInfo 2.26, while the Finder recursively traverse directories in version 3.2 cacheDriver option is set to file in CompatInfo 2.26, while version 3.2 did not added the cache plugin.

Version 2.26. 

<?php
require_once 'Bartlett/PHP/CompatInfo/Autoload.php';

$source  = '/path/to/source';
$options = array(
    'cacheDriver' => 'null',
    'recursive'   => true
);

$compatinfo = new PHP_CompatInfo($options);
$compatinfo->parse($source);

Version 3.2. 

<?php
require_once 'vendor/autoload.php';

use Bartlett\CompatInfo;

use Bartlett\Reflect\ProviderManager;
use Bartlett\Reflect\Provider\SymfonyFinderProvider;

use Symfony\Component\Finder\Finder;

$dirs = '/path/to/source';

$finder = new Finder();
$finder->files()
    ->name('*.php')
    ->in($dirs);

$provider = new SymfonyFinderProvider($finder);

$pm = new ProviderManager;
$pm->set('dataSourceIdent', $provider);

$compatinfo = new CompatInfo;
$compatinfo->setProviderManager($pm);
$compatinfo->parse();

Version 2.26. 

<?php
require_once 'Bartlett/PHP/CompatInfo/Autoload.php';

$source  = '/path/to/source';
$options = array(
    'cacheDriver' => 'file',
    'recursive'   => true
);

$compatinfo = new PHP_CompatInfo($options);
$compatinfo->parse($source);

	It’s not mandatory to specify cacheDriver option what is by default set to false.

Version 3.2. 

<?php
require_once 'vendor/autoload.php';

use Bartlett\CompatInfo;

use Bartlett\Reflect\ProviderManager;
use Bartlett\Reflect\Provider\SymfonyFinderProvider;
use Bartlett\Reflect\Plugin\Cache\CachePlugin;
use Bartlett\Reflect\Plugin\Cache\DefaultCacheStorage;
use Bartlett\Reflect\Cache\DoctrineCacheAdapter;

use Doctrine\Common\Cache\FilesystemCache;

use Symfony\Component\Finder\Finder;

$dirs = '/path/to/source';

$finder = new Finder();
$finder->files()
    ->name('*.php')
    ->in($dirs);

$provider = new SymfonyFinderProvider($finder);

$pm = new ProviderManager;
$pm->set('dataSourceIdent', $provider);

$backend = new FilesystemCache(sys_get_temp_dir() . '/phpcompatinfo');
$doctrineCache = new DoctrineCacheAdapter($backend);
$cache = new DefaultCacheStorage($doctrineCache);

$compatinfo = new CompatInfo;
$compatinfo->setProviderManager($pm);
$compatinfo->addPlugin( new CachePlugin($cache) );
$compatinfo->parse();

	While CompatInfo 2.26 audit all events (does not provide ability to filter them, unless by writing a new listener), version 3.2 let you choose and connect a function by event. See ???

Version 2.26. 

<?php
require_once 'Bartlett/PHP/CompatInfo/Autoload.php';

$source  = '/path/to/source';
$options = array(
    'cacheDriver' => 'null',
    'recursive'   => true
);

$fileListener = new PHP_CompatInfo_Listener_File();

$compatinfo = new PHP_CompatInfo($options);
$compatinfo->attach($fileListener);
$compatinfo->parse($source);

Version 3.2. 

<?php
require_once 'vendor/autoload.php';

use Bartlett\CompatInfo;

use Bartlett\Reflect\ProviderManager;
use Bartlett\Reflect\Provider\SymfonyFinderProvider;

use Symfony\Component\Finder\Finder;

$dirs = '/path/to/source';

$finder = new Finder();
$finder->files()
    ->name('*.php')
    ->in($dirs);

$provider = new SymfonyFinderProvider($finder);

$pm = new ProviderManager;
$pm->set('dataSourceIdent', $provider);

$compatinfo = new CompatInfo;
$compatinfo->setProviderManager($pm);

$compatinfo->getEventDispatcher()->addListener(
    'reflect.progress',
    function (GenericEvent $e) {
        printf(
            'Parsing Data source "%s" in progress ... File "%s"' . PHP_EOL,
            $e['source'],
            $e['file']->getPathname()
        );
    }
);
$compatinfo->parse();

Version 2.26. 

<?php
require_once 'Bartlett/PHP/CompatInfo/Autoload.php';

$source  = '/path/to/source';
$options = array(
    'cacheDriver' => 'null',
    'recursive'   => true
);

$compatinfo = new PHP_CompatInfo($options);
$compatinfo->parse($source);

$versions   = $compatinfo->getVersions();
$classes    = $compatinfo->getClasses();
$functions  = $compatinfo->getFunctions();
$extensions = $compatinfo->getExtensions();

Version 3.2. 

<?php
require_once 'vendor/autoload.php';

use Bartlett\CompatInfo;
use Bartlett\CompatInfo\Analyser;

use Bartlett\Reflect\ProviderManager;
use Bartlett\Reflect\Provider\SymfonyFinderProvider;
use Bartlett\Reflect\Plugin\Analyser\AnalyserPlugin;

use Symfony\Component\Finder\Finder;

$dirs = '/path/to/source';

$finder = new Finder();
$finder->files()
    ->name('*.php')
    ->in($dirs);

$provider = new SymfonyFinderProvider($finder);

$sourceId = 'dataSourceIdent';

$pm = new ProviderManager;
$pm->set($sourceId, $provider);

$compatinfo = new CompatInfo;
$compatinfo->setProviderManager($pm);
$compatinfo->addPlugin(
    new AnalyserPlugin(
        array(
            new Analyser\SummaryAnalyser(),
        )
    )
);
$compatinfo->parse();

$metrics = $compatinfo->getMetrics();

$versions   = $metrics[$sourceId]['sa.versions'];
$classes    = $metrics[$sourceId]['sa.classes'];
$functions  = $metrics[$sourceId]['sa.functions'];
$extensions = $metrics[$sourceId]['sa.extensions'];

	sa. prefix corresponds to class constant METRICS_PREFIX of SummaryAnalyser.

With adoption of Symfony/Console 2.5 or greater, the progress bar feature is used instead of the progress bar helper.

The progress bar is displayed only if you invoke commands with the --progress option.

For example :

$ phpcompatinfo --progress analyser:run <SOURCE>

Renders depends of verbosity level.

For example, on verbose level 1, progress will be displayed as a throbber:

        8 [-------->-------------------]  1 sec

For example, on verbose level 2:

    7  1 sec File Bartlett\CompatInfo\Console\Formatter\CompatibilityOutputFormatter.php in progress...

For example, on verbose level 3:

    4  1 sec 6.8 MiB File Bartlett\CompatInfo\Analyser\CompatibilityAnalyser.php in progress...

Where <SOURCE> identify the data source, directly or via the JSON configuration file.

Version 3.2. 

$ phpcompatinfo analyser:run <SOURCE> --php

Version 4.0. 

$ phpcompatinfo analyser:run <SOURCE>

JSON configuration 3.2. 

{
    "source-providers": [
        {
            "in": ". as current",
            "name": "/\\.(php|inc|phtml)$/"
        }
    ],
    "plugins": [
        {
            "name": "Analyser",
            "class": "Bartlett\\Reflect\\Plugin\\Analyser\\AnalyserPlugin"
        }
    ],
    "analysers" : [
        {
            "name": "Namespace",
            "class": "Bartlett\\CompatInfo\\Analyser\\NamespaceAnalyser"
        },
        {
            "name": "Extension",
            "class": "Bartlett\\CompatInfo\\Analyser\\ExtensionAnalyser"
        },
        {
            "name": "Interface",
            "class": "Bartlett\\CompatInfo\\Analyser\\InterfaceAnalyser"
        },
        {
            "name": "Trait",
            "class": "Bartlett\\CompatInfo\\Analyser\\TraitAnalyser"
        },
        {
            "name": "Class",
            "class": "Bartlett\\CompatInfo\\Analyser\\ClassAnalyser"
        },
        {
            "name": "Function",
            "class": "Bartlett\\CompatInfo\\Analyser\\FunctionAnalyser"
        },
        {
            "name": "Constant",
            "class": "Bartlett\\CompatInfo\\Analyser\\ConstantAnalyser"
        },
        {
            "name": "Summary",
            "class": "Bartlett\\CompatInfo\\Analyser\\SummaryAnalyser"
        },
        {
            "name": "Condition",
            "class": "Bartlett\\CompatInfo\\Analyser\\CodeCondAnalyser"
        },
        {
            "name": "Composer",
            "class": "Bartlett\\CompatInfo\\Analyser\\ComposerAnalyser"
        },
        {
            "name": "Structure",
            "class": "Bartlett\\Reflect\\Analyser\\StructureAnalyser"
        }
    ]
}

Minimal JSON configuration 4.0. 

{
    "source-providers": [
    ],
    "plugins": [
    ],
    "analysers" : [
    ],
    "services" : [
    ]
}

	In version 4.0, all (default) analysers are available. It’s no more required to declare them in the JSON config file, especially because this file is now became optional.

	Cache plugin may be find in different location (class) between versions 3.2 and 4.0

Version 3.2. 

{
    "plugins": [
        {
            "name": "Analyser",
            "class": "Bartlett\\Reflect\\Plugin\\Analyser\\AnalyserPlugin"
        },
        {
            "name": "Cache",
            "class": "Bartlett\\Reflect\\Plugin\\Cache\\CachePlugin",
            "options": {
                "adapter": "DoctrineCacheAdapter",
                "backend": {
                    "class": "Doctrine\\Common\\Cache\\FilesystemCache",
                    "args": [
                        "%{TEMP}/bartlett/cache"
                    ]
                }
            }
        }
    ],
}

Version 4.0. 

{
    "plugins": [
        {
            "name": "Cache",
            "class": "Bartlett\\Reflect\\Plugin\\CachePlugin",
            "options": {
                "adapter": "DoctrineCacheAdapter",
                "backend": {
                    "class": "Doctrine\\Common\\Cache\\FilesystemCache",
                    "args": [
                        "%{TEMP}/bartlett/cache"
                    ]
                }
            }
        }
    ],
}

	AnalyserPlugin was removed in 4.0. We have just to include a new analyser in the analysers section to make it available.

<?php
require_once 'vendor/autoload.php';

use Bartlett\CompatInfo;

use Bartlett\Reflect\ProviderManager;
use Bartlett\Reflect\Provider\SymfonyFinderProvider;
use Bartlett\Reflect\Plugin\Cache\CachePlugin;
use Bartlett\Reflect\Plugin\Cache\DefaultCacheStorage;
use Bartlett\Reflect\Cache\DoctrineCacheAdapter;

use Doctrine\Common\Cache\FilesystemCache;

use Symfony\Component\Finder\Finder;

$dirs = '/path/to/source';

$finder = new Finder();
$finder->files()
    ->name('*.php')
    ->in($dirs);

$provider = new SymfonyFinderProvider($finder);

$pm = new ProviderManager;
$pm->set('dataSourceIdent', $provider);

$backend = new FilesystemCache(sys_get_temp_dir() . '/phpcompatinfo');
$doctrineCache = new DoctrineCacheAdapter($backend);
$cache = new DefaultCacheStorage($doctrineCache);

$compatinfo = new CompatInfo;
$compatinfo->setProviderManager($pm);
$compatinfo->addPlugin( new CachePlugin($cache) );
$compatinfo->parse();

Version 4.0. 

<?php
$loader = require_once dirname(__DIR__) . '/vendor/autoload.php';
$loader->addClassMap(
    array(
        'YourNamespace\CachePlugin'
            =>  __DIR__ . '/YourNamespace/CachePlugin.php',
    )
);

use Bartlett\Reflect\Environment;
use Bartlett\Reflect\Client;

use Symfony\Component\EventDispatcher\GenericEvent;

// set our own location of JSON config file
putenv("BARTLETT_SCAN_DIR=" . __DIR__ . '/YourNamespace');

// set our own JSON config file
putenv("BARTLETTRC=yournamespace.json");

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

// perform request, on a data source with default analyser (structure)
$dataSource = dirname(__DIR__) . '/src';
$analysers  = array('structure');

// equivalent to CLI command `phpcompatinfo analyser:run ../src`
$metrics = $api->run($dataSource, $analysers);

var_export($metrics);

See full example in bartlett/php-reflect package.

Version 3.2. 

<?php
require_once 'vendor/autoload.php';

use Bartlett\CompatInfo;

use Bartlett\Reflect\ProviderManager;
use Bartlett\Reflect\Provider\SymfonyFinderProvider;

use Symfony\Component\Finder\Finder;

$dirs = '/path/to/source';

$finder = new Finder();
$finder->files()
    ->name('*.php')
    ->in($dirs);

$provider = new SymfonyFinderProvider($finder);

$pm = new ProviderManager;
$pm->set('dataSourceIdent', $provider);

$compatinfo = new CompatInfo;
$compatinfo->setProviderManager($pm);

$compatinfo->getEventDispatcher()->addListener(
    'reflect.progress',
    function (GenericEvent $e) {
        printf(
            'Parsing Data source "%s" in progress ... File "%s"' . PHP_EOL,
            $e['source'],
            $e['file']->getPathname()
        );
    }
);
$compatinfo->parse();

Version 4.0. 

<?php
require_once 'vendor/autoload.php';

use Bartlett\Reflect\Client;
use Bartlett\Reflect\Events;

use Symfony\Component\EventDispatcher\GenericEvent;

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

$dispatcher = $api->getEventDispatcher();

$dispatcher->addListener(
    Events::PROGRESS,
    function (GenericEvent $e) {
        printf(
            'Parsing Data source "%s" in progress ... File "%s"' . PHP_EOL,
            $e['source'],
            $e['file']->getPathname()
        );
    }
);

// perform request, on a data source with default analyser (compatibility)
$dataSource = "/path/to/source';
$analysers  = array('compatibility');

// equivalent to CLI command `phpcompatinfo analyser:run /path/to/source`
$metrics = $api->run($dataSource, $analysers);

var_export($metrics);

Version 3.2. 

<?php
require_once 'Bartlett/PHP/CompatInfo/Autoload.php';

$source  = '/path/to/source';
$options = array(
    'cacheDriver' => 'null',
    'recursive'   => true
);

$compatinfo = new PHP_CompatInfo($options);
$compatinfo->parse($source);

$versions   = $compatinfo->getVersions();
$classes    = $compatinfo->getClasses();
$functions  = $compatinfo->getFunctions();
$extensions = $compatinfo->getExtensions();

<?php
require_once 'vendor/autoload.php';

use Bartlett\Reflect\Client;

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

// perform request, on a data source with default analyser (compatibility)
$dataSource = '/path/to/source';
$analysers  = array('compatibility');

// equivalent to CLI command `phpcompatinfo analyser:run /path/to/source`
$response = $api->run($dataSource, $analysers);

$metrics    = $response['Bartlett\CompatInfo\Analyser\CompatibilityAnalyser'];
$versions   = $metrics['versions'];
$classes    = $metrics['classes'];
$functions  = $metrics['functions'];
$extensions = $metrics['extensions'];

Basic or Complex Strategy to identify the Data Source.

	Now, and for the following chapters, we will not mention how you load the classes. Depending of the install strategy you’ve adopted, Composer or other, don’t forget to load your autoloader.

Compare to version 2, CompatInfo 4 offers two simple strategies to identify the data source.

First, is to give the relative or absolute path to file or directory to parse (without limitation).

Second, is to specify options to customize parsing process, to the Symfony Finder Component.

$ phpcompatinfo analyser:run /absolute/path/to/source

$ phpcompatinfo analyser:run ./relative/path/to/source

17.1.2. Complex Strategy

Still as it was with CompatInfo 3, you will need to configure your data source in a JSON file.

Syntax is closed to the Symfony Finder Component that is used to limit data source contents to parse.

Example to parse an archive. 

{
    "source-providers": [
        {
            "in": "phar:///var/dist/owncloud-7.0.2.tar as owncloud7",
            "name": "*.php",
            "exclude": ["3rdparty"]
        }
    ],
    "plugins": [
    ],
    "analysers" : [
    ]
}

	Do not forget the phar:// protocol in front of archive identification.

	Use alias named here owncloud7 to identify data source entry in the JSON config file, rather than the full path phar:///var/dist/owncloud-7.0.2.tar.

Example to parse a directory. 

{
    "source-providers": [
        {
            "in": "/home/github/phing/ as phing2",
            "path": ["bin", "classes"],
            "exclude": ["test"],
            "name": "*.php"
        }
    ],
    "plugins": [
    ],
    "analysers" : [
    ]
}

Learn more about directives, see Section 8.1, “section Source Providers”

Whatever SAPI you use, all metrics (for each analysers asked) are available at end of parse, in the same format.

With CLI, and CompatInfo source code, to get a compatibility report, you have to invoke the following command :

$ phpcompatinfo analyser:run /home/github/php-compat-info/src

With others SAPI, use example https://raw.githubusercontent.com/llaville/php-compat-info/master/examples/api_analyser_run.php

and you should obtain something like this :

Data Source Analysed

Directories                                         11
Files                                               13

Extensions Analysis

    Extension Matches REF      EXT min/Max PHP min/Max PHP all
    Core              Core                 4.0.0       5.3.0
    PDO               PDO      5.1.0       5.1.0
    curl              curl     4.0.2       4.0.2
    intl              intl     2.0.0b1     5.3.7
    libxml            libxml   5.1.0       5.1.0
    openssl           openssl  5.2.0       5.2.0
    pcre              pcre     4.0.0       4.0.0
    spl               spl      5.1.0       5.1.0
    standard          standard 4.0.0       4.0.0       5.3.2
    Total [9]                              5.3.7

Namespaces Analysis

    Namespace                             Matches REF  EXT min/Max PHP min/Max PHP all
    +global                                       Core             4.0.0
    Bartlett\CompatInfo                           user             5.3.0
    Bartlett\CompatInfo\Analyser                  user             5.3.0
    Bartlett\CompatInfo\Api                       user             5.3.0       5.3.2
    Bartlett\CompatInfo\Api\V3                    user             5.3.0
    Bartlett\CompatInfo\Collection                user             5.3.0
    Bartlett\CompatInfo\Console                   user             5.3.0
    Bartlett\CompatInfo\Console\Formatter         user             5.3.0
    Bartlett\CompatInfo\Output                    user             5.3.0
    Bartlett\CompatInfo\PhpParser                 user             5.3.0
    Bartlett\CompatInfo\Reference                 user             5.3.0
    Bartlett\CompatInfo\Util                      user             5.3.0
    Total [12]                                                     5.3.0       5.3.2

Interfaces Analysis

    Interface                                        Matches REF  EXT min/Max PHP min/Max PHP all
    Bartlett\CompatInfo\Reference\ReferenceInterface 1       user             5.3.0
    Total [1]                                                                 5.3.0

No trait found

Classes Analysis

    Class                                                              Matches REF  EXT min/Max PHP min/Max PHP all
    Bartlett\CompatInfo\Analyser\CompatibilityAnalyser                         user             5.3.0
    Bartlett\CompatInfo\Api\Reference                                          user             5.3.0       5.3.2
    Bartlett\CompatInfo\Api\V3\Reference                                       user             5.3.0
    Bartlett\CompatInfo\Collection\ReferenceCollection                 1       user             5.3.0
    Bartlett\CompatInfo\Console\Application                                    user             5.3.0
    Bartlett\CompatInfo\Console\Formatter\CompatibilityOutputFormatter         user             5.3.0
    Bartlett\CompatInfo\Environment                                    4       user             5.3.0
    Bartlett\CompatInfo\Output\Reference                                       user             5.3.0
    Bartlett\CompatInfo\PhpParser\ConditionalCodeNodeProcessor         1       user             5.3.0
    Bartlett\CompatInfo\Reference\ExtensionFactory                     2       user             5.3.0
    Bartlett\CompatInfo\Reference\SqliteStorage                        1       user             5.3.0
    Bartlett\CompatInfo\Util\Version                                   10      user             5.3.0
  U Bartlett\Reflect\Analyser\AbstractAnalyser                         1       user             5.3.0
  U Bartlett\Reflect\Api\BaseApi                                       1       user             5.3.0
  U Bartlett\Reflect\Api\V3\Common                                     1       user             5.3.0
  U Bartlett\Reflect\Console\Application                               1       user             5.3.0
  U Bartlett\Reflect\Console\Formatter\OutputFormatter                 2       user             5.3.0
  U Bartlett\Reflect\PhpParser\NodeProcessorAbstract                   1       user             5.3.0
  U Doctrine\Common\Collections\AbstractLazyCollection                 1       user             5.3.0
  U Doctrine\Common\Collections\ArrayCollection                        1       user             5.3.0
    PDO                                                                2       PDO  5.1.0       5.1.0
  U PhpParser\Node                                                     21      user             5.3.0
  U PhpParser\Node\Name                                                1       user             5.3.0
    RuntimeException                                                   1       spl  5.1.0       5.1.0
  U Symfony\Component\Console\Helper\TableSeparator                    3       user             5.3.0
  U Symfony\Component\Console\Output\OutputInterface                   4       user             5.3.0
    parent                                                             5       Core 5.0.0       5.0.0
    self                                                               11      Core 5.0.0       5.0.0
    stdClass                                                           1       Core 4.0.0       4.0.0
    Total [29]                                                                                  5.3.0       5.3.2

Functions Analysis

    Function                    Matches REF      EXT min/Max PHP min/Max
    array_key_exists            7       standard 4.0.7       4.0.7
    array_map                   2       standard 4.0.6       4.0.6
    array_merge                 3       standard 4.0.0       4.0.0
    array_pop                   6       standard 4.0.0       4.0.0
    array_shift                 2       standard 4.0.0       4.0.0
    array_slice                 1       standard 4.0.0       4.0.0
    array_values                1       standard 4.0.0       4.0.0
    closure-73-75                       user                 5.3.0
    copy                        1       standard 4.0.0       4.0.0
    count                       14      standard 4.0.0       4.0.0
 C  curl_version                1       curl     4.0.2       4.0.2
    defined                     4       Core     4.0.0       4.0.0
    dirname                     3       standard 4.0.0       4.0.0
    each                        2       Core     4.0.0       4.0.0
    end                         3       standard 4.0.0       4.0.0
    explode                     2       standard 4.0.0       4.0.0
    extension_loaded            1       Core     4.0.0       4.0.0
    file_exists                 2       standard 4.0.0       4.0.0
    function_exists             1       Core     4.0.0       4.0.0
    in_array                    10      standard 4.0.0       4.0.0
    is_array                    1       standard 4.0.0       4.0.0
    is_callable                 1       standard 4.0.6       4.0.6
    is_string                   10      standard 4.0.0       4.0.0
    ksort                       3       standard 4.0.0       4.0.0
    ltrim                       1       standard 4.0.0       4.0.0
    mkdir                       1       standard 4.0.0       4.0.0
    phpversion                  2       standard 4.0.0       4.0.0
    preg_match                  2       pcre     4.0.0       4.0.0
    sha1_file                   2       standard 4.3.0       4.3.0
    sprintf                     26      standard 4.0.0       4.0.0
    str_replace                 1       standard 4.0.0       4.0.0
    strcasecmp                  4       Core     4.0.0       4.0.0
    stream_resolve_include_path 1       standard 5.3.2       5.3.2
    strpos                      2       standard 4.0.0       4.0.0
    strtolower                  1       standard 4.0.0       4.0.0
    substr                      2       standard 4.0.0       4.0.0
    sys_get_temp_dir            1       standard 5.2.1       5.2.1
    ucfirst                     5       standard 4.0.0       4.0.0
    version_compare             9       standard 4.0.7       4.0.7
    Total [39]                                               5.3.2

Constants Analysis

    Constant               Matches REF     EXT min/Max PHP min/Max
 C  INTL_ICU_VERSION       2       intl    2.0.0b1     5.3.7
    LIBXML_DOTTED_VERSION  1       libxml  5.1.0       5.1.0
    LIBXML_VERSION         1       libxml  5.1.0       5.1.0
 C  OPENSSL_VERSION_NUMBER 1       openssl 5.2.0       5.2.0
 C  OPENSSL_VERSION_TEXT   1       openssl 5.2.0       5.2.0
    PHP_EOL                5       Core    4.3.10      4.3.10
    PHP_VERSION            4       Core    4.0.0       4.0.0
    __DIR__                1       Core    5.3.0       5.3.0
    false                  14      Core    4.0.0       4.0.0
    null                   15      Core    4.0.0       4.0.0
    true                   10      Core    4.0.0       4.0.0
    Total [11]                                         5.3.0

Conditions Analysis

    Condition                       Matches REF     EXT min/Max PHP min/Max
    defined(INTL_ICU_VERSION)       2       intl    2.0.0b1     5.3.7
    defined(OPENSSL_VERSION_NUMBER) 1       openssl 5.2.0       5.2.0
    defined(OPENSSL_VERSION_TEXT)   1       openssl 5.2.0       5.2.0
    function_exists(curl_version)   1       curl    4.0.2       4.0.2
    Total [4]                                                   5.3.7

Requires PHP 5.3.2 (min), PHP 5.3.2 (all)

This is the default render. But, if you want to compare with other SAPI, activate the debug verbose mode (-vvv) to get the raw response. You should obtain something like this :

Raw response
Array
(
    [files] => Array
        (
            [0] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Reference/ExtensionFactory.php
            [1] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Api/V3/Reference.php
            [2] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Analyser/CompatibilityAnalyser.php
            [3] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Api/Reference.php
            [4] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Collection/ReferenceCollection.php
            [5] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Console/Application.php
            [6] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Console/Formatter/CompatibilityOutputFormatter.php
            [7] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Environment.php
            [8] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Output/Reference.php
            [9] => /home/github/php-compat-info/src/Bartlett/CompatInfo/PhpParser/ConditionalCodeNodeProcessor.php
            [10] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Reference/ReferenceInterface.php
            [11] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Reference/SqliteStorage.php
            [12] => /home/github/php-compat-info/src/Bartlett/CompatInfo/Util/Version.php
        )

    [Bartlett\CompatInfo\Analyser\CompatibilityAnalyser] => Array
        (
            [versions] => Array
                (
                    [php.min] => 5.3.2
                    [php.max] =>
                    [php.all] => 5.3.2
                )

            [extensions] => Array
                (
                    ...

                )

            [namespaces] => Array
                (
                    ...

                )

            [interfaces] => Array
                (
                    ...

                )

            [traits] => Array
                (
                )

            [classes] => Array
                (
                    ...

                )

            [methods] => Array
                (
                    ...

                )

            [functions] => Array
                (
                    ...

                )

            [constants] => Array
                (
                    ...

                )

            [conditions] => Array
                (
                    ...

                )

        )

)

• First entry in array is the list of parsed files
• Second entry in array is the compatibility analyser result

Each analyser as its own data structure and results, but you will always get the fully qualified class name that identify origin of analyser used.

Example with two analysers (structure and compatibility). 

$ phpcompatinfo analyser:run /home/github/php-compat-info/src structure compatibility

Raw response
Array
(
    [files] => Array
        (
            ...
        )

    [Bartlett\Reflect\Analyser\StructureAnalyser] => Array
        (
            ...
        )

    [Bartlett\CompatInfo\Analyser\CompatibilityAnalyser] => Array
        (
            ...
        )

)

CompatInfo uses a Symfony EventDispatcher Component to allow you to easily extend the features list.

The EventDispatcher component allow CompatInfo components to communicate with each other by dispatching events and listening to them.

<?php

use Bartlett\Reflect\Client;

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

$dispatcher = $api->getEventDispatcher();

<?php

use Bartlett\Reflect\Client;

use Symfony\Component\EventDispatcher\GenericEvent;

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

$dispatcher = $api->getEventDispatcher();

$dispatcher->addListener(
    'reflect.progress',
    function (GenericEvent $e) {
        printf(
            'Parsing Data source "%s" in progress ... File "%s"' . PHP_EOL,
            $e['source'],
            $e['file']->getPathname()
        );
    }
);

<?php

use Bartlett\Reflect\Events;

class NotifierPlugin implements PluginInterface, EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        $events = array(
            Events::PROGRESS => 'onNotification',
            Events::ERROR    => 'onNotification',
            Events::COMPLETE => 'onNotification',
        );
        return $events;
    }
}

	In Reflect API 2, and other SAPI than CLI, you have to register a plugin, if you want to use it. In Reflect API 3, it’s no more necessary. All valid plugins defined in the JSON configuration file are automatically registered.

	You must define environment variables BARTLETT_SCAN_DIR and BARTLETTRC, otherwise the JSON config file will not found it.

If you don’t want to use any plugins, and de-activated all at once, follow this pattern.

<?php

use Bartlett\Reflect\Environment;
use Bartlett\Reflect\Client;

// set default values for BARTLETT_SCAN_DIR
Environment::setScanDir()

// set default value for BARTLETTRC
putenv("BARTLETTRC=phpcompatinfo.json");

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

// de activate all plugins
$api->activatePlugins(false);

// perform request, on a data source with default analyser (compatibility)
$dataSource = dirname(__DIR__) . '/src';
$analysers  = array('compatibility');

// equivalent to CLI command `phpcompatinfo analyser:run ../src`
$metrics = $api->run($dataSource, $analysers);

If you want to use the Doctrine cache component, skip this section.

If you want to use your own version of cache plugin, use following pattern.

<?php

namespace YourNamespace;

use Bartlett\Reflect\Plugin\CachePlugin as BaseCachePlugin;

class CachePlugin extends BaseCachePlugin
{
    // all additional code you need
}

And the configuration in JSON file :

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Cache",
            "class": "YourNamespace\\CachePlugin",
            "options": []
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

Use one of the most famous caching solution, provided by the Doctrine project.

Use this shortcut version that is strictly equivalent to next in section file cache.

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Cache",
            "class": "Bartlett\\Reflect\\Plugin\\CachePlugin",
            "options": []
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

Doctrine File backend to store your Reflect results in the local file system.

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Cache",
            "class": "Bartlett\\Reflect\\Plugin\\CachePlugin",
            "options": {
                "adapter": "DoctrineCacheAdapter",
                "backend": {
                    "class": "Doctrine\\Common\\Cache\\FilesystemCache",
                    "args": [
                        "%{TEMP}/bartlett/cache"
                    ]
                }
            }
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

In the source code above, we use the standard Doctrine File cache provider, and store results in the default system temporary directory ( see php sys_get_temp_dir() function ).

If you want to use default logger Bartlett\Reflect\Plugin\Log\DefaultLogger, skip this section.

If you want to use your own version of log plugin, use following pattern.

<?php

namespace YourNamespace;

use Bartlett\Reflect\Plugin\LogPlugin as BaseLogPlugin;

class LogPlugin extends BaseLogPlugin
{
    // all additional code you need
}

And the configuration in JSON file :

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Logger",
            "class": "YourNamespace\\LogPlugin",
            "options": []
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

Use a solution similar to ErrorLogHandler of Monolog project.

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Logger",
            "class": "Bartlett\\Reflect\\Plugin\\LogPlugin",
            "options": []
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

It logs records at Psr\Log\LogLevel::INFO level or highter, identified by channel name DefaultLoggerChannel.

Use your own logger, that must be compatible PSR-3.

<?php

namespace YourNamespace;

use Psr\Log\AbstractLogger;

class YourLogger extends AbstractLogger
{
    public function log($level, $message, array $context = array())
    {
    }
}

And identify it in the JSON config file, as follow

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Logger",
            "class": "YourNamespace\\LogPlugin"
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

Or even

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Logger",
            "class": "Bartlett\\Reflect\\Plugin\\LogPlugin",
            "options": "YourNamespace\\YourLogger"
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

See full example at https://raw.githubusercontent.com/llaville/php-compat-info/master/examples/api_analyser_run_with_logger.php

Use one of the most famous logging solution compatible PSR-3.

	If you want to use Monolog with CompatInfo on CLI mode, then you should use a wrapper like this.

<?php

namespace YourNamespace;

use Monolog\Logger;
use Monolog\Handler\StreamHandler;

class YourLogger extends Logger
{
    public function __construct($name = 'YourLoggerChannel')
    {
        $stream = new StreamHandler('/var/logs/phpcompatinfo.log');
        parent::__construct($name, array($stream));
    }
}

And with JSON config file as follow

{
    "source-providers": [
    ],
    "plugins": [
        {
            "name": "Logger",
            "class": "Bartlett\\Reflect\\Plugin\\LogPlugin",
            "options": "YourNamespace\\YourLogger"
        }
    ],
    "analysers" : [
    ],
    "services": [
    ]
}

Two ways depending of SAPI used.

If you’re on Windows or Mac platform, you may have Growl. If you’re on Linux, the default bundled growl notifier is not for you. Skip this section.

	Growl for Windows Growl for Mac

You’ll add to configure your plugin in your phpcompatinfo.json file, as follow :

    {
        "name": "Notifier",
        "class": "Bartlett\\Reflect\\Plugin\\NotifierPlugin",
        "options" : "Bartlett\\CompatInfo\\Plugin\\Notifier\\GrowlNotifier"
    }

Default behaviors are :

If one or all of those behaviors does not match your need, here is how to change it.

Creates your own growl notifier class, (E.g: YourNamespace\MyGrowlNotifier) and put it in somewhere in your include_path.

<?php

namespace YourNamespace;

use Bartlett\Reflect\Plugin\Notifier\GrowlNotifier as BaseGrowlNotifier;

class MyGrowlNotifier extends BaseGrowlNotifier
{
    public function __construct($application = 'myPhpCompatInfo', $notifications = array(),
        $password = '', $options = array()
    {
        parent::__construct($application, $notifications, $password, $options);
    }
}

We have changed the Growl Application Name to myPhpCompatInfo, and used the udp protocol.

	See http://growl.laurent-laville.org/ to learn more about PEAR/Net_Growl package.

<?php

use Bartlett\Reflect\Environment;
use Bartlett\Reflect\Client;

// set default values for BARTLETT_SCAN_DIR
Environment::setScanDir()

// set default value for BARTLETTRC
putenv("BARTLETTRC=phpcompatinfo.json");

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

// perform request, on a data source with default analyser (structure)
$dataSource = dirname(__DIR__) . '/src';
$analysers  = array('structure');

// equivalent to CLI command `phpcompatinfo analyser:run ../src`
$metrics = $api->run($dataSource, $analysers);

var_export($metrics);

Each Analyser class must implement two interfaces Bartlett\Reflect\Analyser\AnalyserInterface, and PhpParser\NodeVisitor.

Your first own analyser may start like that :

<?php

namespace YourNamespace;

use Bartlett\Reflect\Analyser\AnalyserInterface;
use PhpParser\NodeVisitor;

class YourAnalyser implements AnalyserInterface, NodeVisitor
{
    //
    // AnalyserInterface methods
    //

    public function setSubject(Reflect $reflect)
    {
    }

    public function setTokens(array $tokens)
    {
    }

    public function setCurrentFile($path)
    {
    }

    public function getMetrics()
    {
    }

    public function getName()
    {
    }

    public function getNamespace()
    {
    }

    public function getShortName()
    {
    }

    //
    // NodeVisitor methods
    //
    public function beforeTraverse(array $nodes)
    {
    }

    public function enterNode(Node $node)
    {
    }

    public function leaveNode(Node $node)
    {
    }

    public function afterTraverse(array $nodes)
    {
    }
}

	An abstract class Bartlett\Reflect\Analyser\AbstractAnalyser that implement all required interfaces may be used to initialize common data in a simple way. Your analyser became as simple like that: <?php namespace YourNamespace; use Bartlett\Reflect\Analyser\AbstractAnalyser; class YourAnalyser extends AbstractAnalyser { }

Once all nodes of AST built by PHP-Parser were traversed, you have to publish your results with the getMetrics() method.

Results must be organized as a key/values pair array, where key is the fully qualified name of your analyser (E.g: YourNamespace\YourAnalyser), and values are your metrics (free organization).

At end of API analyser/run, your metrics are returned, and may be exploited as you want. You are free to create a custom render or not. If no output formatter is provided in namespace YourNamespace\Console\Formatter, a simple PHP print_r() format is returned.

	This is the default format in debug mode (verbose level 3 in CLI).

Here is a pattern of skeleton.

<?php

namespace YourNamespace\Console\Formatter;

use Symfony\Component\Console\Output\OutputInterface;

class YourAnalyserOutputFormatter
{
    // $output   === instance of console output
    // $response === your metrics returned by the +YourNamespace\YourAnalyser\getMetrics()+

    public function __invoke(OutputInterface $output, $response)
    {
    }
}

Here, our goal is to keep only interfaces, traits, classes, functions, constants that are greater or equal PHP 5.0.0

Script YourFilters.php. 

<?php
$closure = function ($data) {
    foreach ($data as $title => &$groups) {
        if (strpos($title, 'CompatibilityAnalyser') === false) {
            continue;
        }
        // looking into Compatibility Analyser metrics only
        foreach ($groups as $group => &$values) {
            if (!in_array($group, array('interfaces', 'traits', 'classes', 'functions', 'constants'))) {
                continue;
            }
            foreach ($values as $name => $metrics) {
                if (version_compare($metrics['php.min'], '5.0.0', 'lt')) {
                    unset($values[$name]);
                }
            }
        }
    }
    return $data;
};
return $closure;

	The filter’s file that host the $closure, must be resolvable through the include_path.

	Be carefull, with filter source code, or unwanted results may occured.

	You have ability to remove definitively (unset), or remove partially (false), values in response through the filter.

	Only one filter is allowed at same run, but you can combine one or more analyser rules.

On CLI, invoke the analyser:run command with the --filter option. E.g:

$ phpcompatinfo analyser:run --filter=YourFilters.php src

On other SAPI, follow example pattern like:

<?php

use Bartlett\Reflect\Client;

// creates an instance of client
$client = new Client();

// request for a Bartlett\Reflect\Api\Analyser
$api = $client->api('analyser');

// perform request, on a data source with default analyser
$dataSource = dirname(__DIR__) . '/src';
$analysers  = array('compatibility');

// filter rules on final results
$closure = function ($data) {
    foreach ($data as $title => &$groups) {
        if (strpos($title, 'CompatibilityAnalyser') === false) {
            continue;
        }
        // looking into Compatibility Analyser metrics only
        foreach ($groups as $group => &$values) {
            if (!in_array($group, array('interfaces', 'traits', 'classes', 'functions', 'constants'))) {
                continue;
            }
            foreach ($values as $name => $metrics) {
                if (version_compare($metrics['php.min'], '5.0.0', 'lt')) {
                    unset($values[$name]);
                }
            }
        }
    }
    return $data;
};

// with embeded $closure code
$metrics = $api->run($dataSource, $analysers, null, false, $closure);

// OR equivalent to CLI command `phpcompatinfo analyser:run --filter=YourFilters.php ../src`
$metrics = $api->run($dataSource, $analysers, null, false, $closure = 'YourFilters.php');