1. Introduction

PHP_CompatInfo is a PHP library that parse any data source (file/folder/mixed) to find out the minimum version and extensions required for it to run. A CLI tool is available, giving results without to have to code a line of programmation.

The major version 2 is a full rewrites to PHP5, that used exceptions to raise errors, and an autoloader to dynamically load required classes.

If you want a PHP4 version compatible, you should consider to have a look on the branch 1.x solution hosted on PEAR repository :

Caution I recommand to migrate to PHP5, because I don’t gave anymore support for PHP4 versions

This manual documents the final stable version 2.3.0

2. Features

  • Parse a single file

  • Parse a directory recursively or not

  • Parse a list of files and/or directories

  • Ability to give a list of extensions to ignore when calculating the version needed

  • Ability to give a list of interfaces to ignore when calculating the version needed

  • Ability to give a list of classes to ignore when calculating the version needed

  • Ability to give a list of functions to ignore when calculating the version needed

  • Ability to give a list of constants to ignore when calculating the version needed.

  • Ability to give a list of files to ignore when calculating the version needed

  • Ability to give a list of directories to ignore when calculating the version needed

  • Ability to use a custom extensions list or by default only extensions loaded, to parse PHP code

  • Event driven and listeners system to audit parsing process

3. System Requirements

Required resources :
Optional resources :
  • PEAR 1.9.0 or newer

  • Net_Growl 2.4.0 or newer

  • PHPUnit 3.5.0 or newer from PHPUnit PEAR channel

  • an XSLT processor if you want to produce an xHTML report from a phpci xml report

4. Installing PHP_CompatInfo

Note The current version of PHP_CompatInfo requires PHP 5.2.0 or newer to run. If you don’t already have an up-to-date version of PHP installed it can be downloaded from the official PHP website http://www.php.net/.

4.1. Using PEAR installer

PHP_CompatInfo should be installed using the [PEAR Installer](http://pear.php.net/). This installer is the backbone of PEAR, which provides a distribution system for PHP packages, and is shipped with every release of PHP since version 4.3.0.

The PEAR channel (bartlett.laurent-laville.org) that is used to distribute PHP_CompatInfo needs to be registered with the local PEAR environment. Furthermore, components that PHP_CompatInfo depends upon is hosted on the eZ Components PEAR channel (components.ez.no), and on the PHPUnit PEAR channel (pear.phpunit.de).

    $ pear channel-discover bartlett.laurent-laville.org
    Adding Channel "bartlett.laurent-laville.org" succeeded
    Discovery of channel "bartlett.laurent-laville.org" succeeded

    $ pear channel-discover components.ez.no
    Adding Channel "components.ez.no" succeeded
    Discovery of channel "components.ez.no" succeeded

    $ pear channel-discover pear.phpunit.de
    Adding Channel "pear.phpunit.de" succeeded
    Discovery of channel "pear.phpunit.de" succeeded

This has to be done only once. Now the PEAR Installer can be used to install packages from the Bartlett channel.

    $ pear install bartlett/PHP_CompatInfo
    downloading PHP_CompatInfo-2.2.0.tgz ...
    Starting to download PHP_CompatInfo-2.2.0.tgz (754,629 bytes)
    .........................done: 754,629 bytes
    install ok: channel://bartlett.laurent-laville.org/PHP_CompatInfo-2.2.0

After the installation you can find the PHP_CompatInfo source files inside your local PEAR directory.

5. Getting Started

5.1. Introduction

PHP_CompatInfo branch 1.x is still compatible with PHP4, that is from an old age now (unmaintained). You can find it on PEAR main site on its project page.

PHP_CompatInfo branch 2.x is a full rewrite with PHP5. Since RC3 the PHP parser engine used is PHP_Reflect. It’s an improved version with "callbacks to what ever token you want" feature from basic concept version PHP_TokenStream.

5.1.1. What can PHP_CompatInfo do for you ?

Depending of server API you will use, PHP_CompatInfo main goal is to give you the minimum and maximum PHP versions, a script or a list of scripts (sources), are required to run code.

But PHP_CompatInfo (alias phpci), may also provides on CLI (with the phpci command) :

  • Reference informations (MIN and MAX PHP versions) about one or more extensions :

    • list all classes

    • list all interfaces

    • list all functions

    • list all constants

  • Print multiple reports group by scanned files or components

    • summary : usage summary of each extension, interface, class, function, constant used by your sources code

    • source : lines code count summary with or without source code

    • xml : export result to a XML format easy to transform to xHTML or other format

    • token : language PHP5 special features such as try/catch/throw exception, etc

    • extension : usage, minimum php version and origin of each extension used by your sources code

    • namespace : usage, minimum php version and origin of each namespace used by your sources code

    • trait : usage, minimum php version and origin of each trait used by your sources code

    • interface : usage, minimum php version and origin of each interface used by your sources code

    • class : usage, minimum php version and origin of each class used by your sources code

    • function : usage, minimum php version and origin of each function used by your sources code

    • constant : usage, minimum php version and origin of each constant used by your sources code

    • global : usage, minimum php version and origin of each global variable used by your sources code

5.2. A simple tutorial

5.2.1. Parse a single file with default options

To parse a file with the PHP5 known references of your extensions loaded, you have just to specify the file’s location.

API example
<?php
require_once 'Bartlett/PHP/CompatInfo.php';

$source = '/path/to/myFile.php';

try {
    $phpci = new PHP_CompatInfo();
    $phpci->parse($source);

    $allResultsAtOnce = $phpci->toArray();

} catch (PHP_CompatInfo_Exception $e) {
    die ('PHP_CompatInfo Exception : ' . $e->getMessage() . PHP_EOL);
}
phpci tool example

From your PEAR bin_dir directory run this command

$ phpci --no-configuration print --reference PHP5 --report summary /path/to/myFile.php

It won’t use the default XML configuration file phpcompatinfo.xml or phpcompatinfo.xml.dist If you are sure of XML configuration settings, remove the --no-configuration option.

Will print out a summary report like this one

    PHP COMPAT INFO REPORT SUMMARY
    -------------------------------------------------------------------------------
    FILES                         EXTENSIONS INTERFACES CLASSES FUNCTIONS CONSTANTS
    -------------------------------------------------------------------------------
    BASE: /path/to
    -------------------------------------------------------------------------------
    DIR.:
    myFile.php                            5          3      11        27         4
    -------------------------------------------------------------------------------
    A TOTAL OF
     5 EXTENSION(S) 3 INTERFACE(S) 11 CLASSE(S) 27 FUNCTION(S) 4 CONSTANT(S)
    WERE FOUND IN 1 FILE(S)
    WITH CONDITIONAL CODE LEVEL 32
    REQUIRED PHP 5.1.3 (MIN)
    -------------------------------------------------------------------------------
    Time: 2 seconds, Memory: 8.50Mb
    -------------------------------------------------------------------------------

5.2.2. Parse a directory with default options

If you wish to parse an entire directory, you can specify the directory location instead of a file.

API example
<?php
require_once 'Bartlett/PHP/CompatInfo.php';

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

try {
    $phpci = new PHP_CompatInfo();
    $phpci->parse($source);

    $allResultsAtOnce = $phpci->toArray();

} catch (PHP_CompatInfo_Exception $e) {
    die ('PHP_CompatInfo Exception : ' . $e->getMessage() . PHP_EOL);
}
phpci tool example

From your PEAR bin_dir directory and the default XML configuration file phpcompatinfo.xml.dist installed into PEAR cfg_dir/PHP_CompatInfo.

$ phpci print /path/to/myFolder

Will print out the summary report

    PHP COMPAT INFO REPORT SUMMARY
    -------------------------------------------------------------------------------
    FILES                         EXTENSIONS INTERFACES CLASSES FUNCTIONS CONSTANTS
    -------------------------------------------------------------------------------
    BASE: /path/to/myFolder
    -------------------------------------------------------------------------------
    DIR.:
    Cache.php                             3          0       2         4         3
    CLI.php                               3          0       8        16         6
    Configuration.php                     3          0       5        10         3
    Exception.php                         1          0       2         0         0
    Reference.php                         1          1       0         0         1
    Report.php                            2          0       2        11         3
    TokenParser.php                       2          0      14         9         3
    TokenStream.php                       4          0       3        17         3
    -------------------------------------------------------------------------------
    A TOTAL OF
     5 EXTENSION(S) 1 INTERFACE(S) 31 CLASSE(S) 47 FUNCTION(S) 6 CONSTANT(S)
    WERE FOUND IN 8 FILE(S)
    WITH CONDITIONAL CODE LEVEL 32
    REQUIRED PHP 5.1.2 (MIN)
    -------------------------------------------------------------------------------
    Time: 2 seconds, Memory: 12.00Mb
    -------------------------------------------------------------------------------

6. API basic usage

6.1. Default options

What either you use the CLI version with the phpci command, or directly API functions, PHP_CompatInfo has some default options you should learn if you want to understand results provided.

Depending of SAPI you will use, source of settings is different.

Default options printed below, may be changed by the $options parameter of PHP_CompatInfo class constructor.

Option Default Description

recursive

false

scan recursive subdirectories or just local files

reference

PHP5

data dictionary reference (all PHP4 and PHP5 informations)

referencePlugins

[PHP4[…], PHP5[…]]

adapters to connect to data dictionaries reference

verbose

false

output more information

fileExtensions

[php, inc, phtml]

list of file extensions to scan

cacheDriver

file

cache results to improve speed of next iteration

cacheOptions

[save_path ⇒ /tmp]

options specific to cache driver used

listeners

[]

none

6.2. Scanning Files and Folders

The simplest way of using PHP_CompatInfo is to provide the location of a file or folder for PHP_CompatInfo to scan. If a folder is provided, PHP_CompatInfo will scan all files it finds in that local folder.

Note If you want sub-folders scanned, use the recursive option.
Example: do not use cache files, but parse directory recursively.
<?php
require_once 'Bartlett/PHP/CompatInfo.php';

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

try {
    $phpci = new PHP_CompatInfo($options);
    $phpci->parse($source);

    $allResultsAtOnce = $phpci->toArray();

} catch (PHP_CompatInfo_Exception $e) {
    die ('PHP_CompatInfo Exception : ' . $e->getMessage() . PHP_EOL);
}

6.3. Specifying a Reference

PHP_CompatInfo can have multiple references installed to allow a single installation to be used with multiple plateform. When scanning PHP code, PHP_CompatInfo can be told which reference to use. This is done using the reference option.

Example: specify a PHP4 reference to parse only PHP 4 sources code
<?php
require_once 'Bartlett/PHP/CompatInfo.php';

$source  = '/path/to/myFolder';
$options = array(
    'reference' => 'PHP4',
);

try {
    $phpci = new PHP_CompatInfo($options);
    $phpci->parse($source);

    $allResultsAtOnce = $phpci->toArray();

} catch (PHP_CompatInfo_Exception $e) {
    die ('PHP_CompatInfo Exception : ' . $e->getMessage() . PHP_EOL);
}
Note If you want to use your own reference, you should have (of course) to write it, but you must also tell where it is.
Example: replaces default references provided in standard distribution
<?php
require_once 'Bartlett/PHP/CompatInfo.php';

$source  = '/path/to/myFolder';
$options = array(
    'reference' => 'PHP5',
    'referencePlugins' => array(
        'PHP5' => array(
            'class' => 'myRefClass',
            'file'  => '/path/to/file/hosting/myRefClass.php',
            'args'  => array()
        ),

);

try {
    $phpci = new PHP_CompatInfo($options);
    $phpci->parse($source);

    $allResultsAtOnce = $phpci->toArray();

} catch (PHP_CompatInfo_Exception $e) {
    die ('PHP_CompatInfo Exception : ' . $e->getMessage() . PHP_EOL);
}

7. Using PHP_CompatInfo from the command line

7.1. Differences to other SAPI

Remarkable differences of the CLI SAPI compared to other SAPI:

  • gets responses in a seconde without code line to write

  • printing components report

  • printing references informations report

  • configurable thru an easy to read XML file

7.2. Options

The list of command line options provided by the phpci command can be queried anytime by running phpci with the -h or --help switches.

PHPCompatInfo (cli) by Laurent Laville.

Usage:
  phpci [options]
  phpci [options] <command> [options] [args]

Options:
  --configuration=xmlFile      Read configuration from XML file
  --no-configuration           Ignore default configuration file
                               (phpcompatinfo.xml)
  -d iniSet, --ini-set=iniSet  Sets a php.ini directive value
  -v, --verbose                Output more verbose information
  -h, --help                   show this help message and exit
  --version                    show the program version and exit

Commands:
  print            Print a report of data source parsed.
  list-references  List all extensions supported.
  list             List all "elements" referenced in the data base.
  list-extensions  List all extensions referenced in the data base.
  list-interfaces  List all interfaces referenced in the data base.
  list-classes     List all classes referenced in the data base.
  list-functions   List all functions referenced in the data base.
  list-constants   List all constants referenced in the data base.
Short Option Long Option Description

--configuration

Specify a custom XML file (which does not need to be named phpcompatinfo.xml or located into PEAR cfg_dir)

--no-configuration

Ignore default configuration files phpcompatinfo.xml or phpcompatinfo.xml.dist

-d

--ini-set

This option allows you to set a custom value for any of the configuration directives allowed in php.ini. Example: -d memory_limit=256M

-v

--verbose

Sets the verbose level to print more informations

-h

--help

With this option, you can get information about the actual list of command line options and some one line descriptions about what they do.

--version

Prints the version of PHP_CompatInfo and exits.

Unless you tell it to ignore the XML configuration file, default options are sets by the phpcompatinfo.xml.dist file if found into the PEAR cfg_dir \PHP_CompatInfo directory

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo
    reference="PHP5"
    report="summary"
    reportFileAppend="false"
    cacheDriver="file"
    recursive="false"
    fileExtensions="php, inc, phtml"
    consoleProgress="true"
    verbose="false"
    >

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

7.3. Commands

They are two categories of command:

  • printing scanned sources code results

  • listing database references extensions informations

7.3.1. print command

This command allow to print results of scanned sources code. If you forget options, enter command below.

$ phpci print --help

That will show you this help screen:

Print a report of data source parsed.

Usage:
  phpci [options] print [options] <sourcePath>

Options:
  --reference=reference             The name of the reference to use
  --report=report                   Type of report
  --report-file=reportFile          Write the report to the specified file
                                    path
  --exclude-pattern=excludeID       Exclude components from list referenced
                                    by ID provided
  -R, --recursive                   Includes the contents of subdirectories
  --file-extensions=fileExtensions  A comma separated list of file
                                    extensions to check
  --help-reference                  List of reference available
  --help-report                     List of report available
  -h, --help                        show this help message and exit

Arguments:
  sourcePath  The data source to scan (file or directory).
Short Option Long Option Description

--reference

This option tells what reference dictionnary to use. May be either one providing by the package distribution or your own.

--report

Specify what kind of report to print. See --help-report for full list.

--report-file

This option identify the file where results will be written.

--exclude-pattern

Identify a <exclude> element in the XML configuration file, that define what elements to exclude from scope.

-R

--recursive

This option allow to parse directories recursively.

--file-extensions

When parsing directory, specify what file to scan.

--help-reference

Remember you what are reference dictionnary available in default distribution.

--help-report

Remember you what are reports available in default distribution.

-h

--help

With this option, you can get information about the actual list of command line options.

Tip You can give one or more report at the same time.
Example: Printing only summary report
$ phpci print --report summary /path/to/source
Example: Printing both summary, extension, interface, class, function, and constant reports.
$ phpci print --report summary extension interface class function constant /path/to/source
Example: Printing both function and constant reports.
$ phpci print --report function --report constant /path/to/source

7.3.2. list-references command

This command allow to print the list of documented extensions available with your version of PHP_CompatInfo, and specify those which are currently loaded (L in front or their names)

If you forget options, enter command below.

$ phpci list-references --help

That will show you this help screen:

List all extensions supported.

Usage:
  phpci [options] list-references [options]

Options:
  --report-file=reportFile  Write the report to the specified file path
  -h, --help                show this help message and exit
Short Option Long Option Description

--report-file

This option identify the file where results will be written.

-h

--help

With this option, you can get information about the actual list of command line options.

Example
$ phpci list-references
    -------------------------------------------------------------------------------
    PHP COMPAT INFO DATABASE REFERENCE
    -------------------------------------------------------------------------------
      EXTENSIONS                                 EXTENSION 1     VERSION 2
    -------------------------------------------------------------------------------
      apc                                        3.1.7             4.0.0
    L bcmath                                                       4.0.0
    L bz2                                                          4.0.4
    L calendar                                                     4.0.0
    L Core                                                         4.0.0
    L ctype                                                        4.0.4
    L curl                                                         4.0.2
    L date                                                         4.0.0
    L dom                                        20031129          5.0.0
      enchant                                    1.1.0             5.3.0
    L ereg                                                         4.0.0  5.3.0
    L fileinfo                                   1.0.5-dev         4.0.0
    L filter                                     0.11.0            5.2.0
    L ftp                                                          4.0.0
    L gd                                                           4.0.0
    L gettext                                                      4.0.0
      gmp                                                          4.0.4
    L hash                                       1.0               5.1.2
    L iconv                                                        4.0.5
    L imap                                                         4.0.0
      intl                                       1.1.0             5.2.4
    L json                                       1.2.1             5.2.0
      ldap                                                         4.0.0
    L libxml                                                       5.0.0
    L mbstring                                                     4.0.6
    L mcrypt                                                       4.0.0
      memcache                                   3.0.6             4.3.3
      memcached                                  1.0.2             5.2.0
    L mhash                                                        4.0.0
    L mysql                                      1.0               4.0.0
    L mysqli                                     0.1               5.0.0
    L OAuth                                      1.0-dev           5.1.0
    L openssl                                                      4.0.4
      pcntl                                                        4.1.0
    L pcre                                                         4.0.0
    L PDO                                        1.0.4dev          5.1.0
      pgsql                                                        4.0.0
    L Phar                                       2.0.1             5.2.0
      posix                                      306939            4.0.0
      readline                                   2.0.1             4.0.0
      recode                                     2.0.1             4.0.0
      Reflection                                                   5.0.0
    L session                                                      4.0.0
    L shmop                                                        4.0.0
    L SimpleXML                                  0.1               5.0.0
      snmp                                                         4.0.0
    L soap                                                         5.0.0
    L sockets                                                      4.1.0
    L SPL                                        0.2               5.0.0
    L SQLite                                     2.0-dev           5.0.0
    L sqlite3                                    0.7-dev           5.3.0
      ssh2                                       0.11.0            5.0.0
    L standard                                                     4.0.0
      sysvmsg                                    306939            4.3.0
      sysvsem                                                      4.0.0
      sysvshm                                                      4.0.0
    L tidy                                       2.0               4.0.0
    L tokenizer                                  0.1               4.2.0
    L wddx                                                         4.0.0
    L xdebug                                     2.1.0             5.2.0
    L xml                                                          4.0.0
    L xmlreader                                  0.1               5.0.0
    L xmlrpc                                     0.51              4.1.0
    L xmlwriter                                  0.1               5.1.2
    L xsl                                        0.1               5.0.0
    L zip                                        1.9.1             4.1.0
    L zlib                                       1.1               4.0.0
    -------------------------------------------------------------------------------
    A TOTAL OF 67 EXTENSIONS WERE FOUND AND 49 LOADED
    -------------------------------------------------------------------------------
    Time: 0 seconds, Memory: 4.75Mb
    -------------------------------------------------------------------------------
1 This column specify the version of extension that was documented
2 This column specify which are the php versions (minimum and maximum) supported by the extension

7.3.3. list command

This command allow to combine one or more list-* command.

Warning results may be huge

If you forget options, enter command below.

$ phpci list --help

That will show you this help screen:

List all "elements" referenced in the data base.

Usage:
  phpci [options] list [options] <element...>

Options:
  --reference=reference     The name of the reference to use
  --report-file=reportFile  Write the report to the specified file path
  --help-reference          List of reference available
  -h, --help                show this help message and exit

Arguments:
  element  May be either "extensions", "interfaces", "classes", "functions"
           or "constants"
Short Option Long Option Description

--reference

This option tells what reference dictionnary to use. May be either one providing by the package distribution or your own.

--report-file

This option identify the file where results will be written.

--help-reference

Remember you what are reference dictionnary available in default distribution.

-h

--help

With this option, you can get information about the actual list of command line options.

Example: list both interfaces and classes of all extensions supported by PHP_Compatinfo
$ phpci list interfaces classes
    -------------------------------------------------------------------------------
    PHP COMPAT INFO INTERFACES REFERENCE
    -------------------------------------------------------------------------------
    INTERFACES                                   EXTENSION         VERSION
    -------------------------------------------------------------------------------
    ArrayAccess                                  SPL               5.1.0
    Countable                                    SPL               5.1.0
    Iterator                                     SPL               5.1.0
    IteratorAggregate                            SPL               5.1.0
    OuterIterator                                SPL               5.1.0
    RecursiveIterator                            SPL               5.1.0
    SeekableIterator                             SPL               5.1.0
    Serializable                                 SPL               5.1.0
    SplObserver                                  SPL               5.1.0
    SplSubject                                   SPL               5.1.0
    Traversable                                  SPL               5.1.0
    -------------------------------------------------------------------------------
    A TOTAL OF 11 INTERFACES WERE FOUND
    -------------------------------------------------------------------------------
    Time: 0 seconds, Memory: 6.25Mb
    -------------------------------------------------------------------------------


    -------------------------------------------------------------------------------
    PHP COMPAT INFO CLASSES REFERENCE
    -------------------------------------------------------------------------------
    CLASSES                                      EXTENSION         VERSION
    -------------------------------------------------------------------------------
    AppendIterator                               SPL               5.1.0
    ArrayIterator                                SPL               5.0.0
    ArrayObject                                  SPL               5.0.0
    BadFunctionCallException                     SPL               5.1.0
    BadMethodCallException                       SPL               5.1.0
    CachingIterator                              SPL               5.0.0
    Closure                                      Core              5.3.0
    DOMAttr                                      dom               5.0.0

    ... <more results> ...

    mysqli_warning                               mysqli            5.0.0
    php_user_filter                              standard          5.0.0
    stdClass                                     Core              4.0.0
    tidy                                         tidy              4.0.0
    tidyNode                                     tidy              5.0.1
    -------------------------------------------------------------------------------
    A TOTAL OF 125 CLASSES WERE FOUND
    -------------------------------------------------------------------------------
    Time: 0 seconds, Memory: 6.25Mb
    -------------------------------------------------------------------------------

7.3.4. list-extensions command

This command allow to print the list of documented extensions available with your version of PHP_CompatInfo, and loaded on your platform.

If you forget options, enter command below.

$ phpci list-extensions --help

That will show you this help screen:

List all extensions referenced in the data base.

Usage:
  phpci [options] list-extensions [options] <extension>

Options:
  --reference=reference     The name of the reference to use
  --report-file=reportFile  Write the report to the specified file path
  --help-reference          List of reference available
  -h, --help                show this help message and exit

Arguments:
  extension  (optional) Limit output only to this extension
Short Option Long Option Description

--reference

This option tells what reference dictionnary to use. May be either one providing by the package distribution or your own.

--report-file

This option identify the file where results will be written.

--help-reference

Remember you what are reference dictionnary available in default distribution.

-h

--help

With this option, you can get information about the actual list of command line options.

Example
$ phpci list-extensions
    -------------------------------------------------------------------------------
    PHP COMPAT INFO EXTENSIONS REFERENCE
    -------------------------------------------------------------------------------
    EXTENSIONS                                   EXTENSION 1     VERSION 2
    -------------------------------------------------------------------------------
    Core                                                           4.0.0
    PDO                                          1.0.4dev          5.1.0
    Phar                                         2.0.1             5.2.0
    SPL                                          0.2               5.0.0
    SQLite                                       2.0-dev           5.0.0
    SimpleXML                                    0.1               5.0.0
    bcmath                                                         4.0.0
    bz2                                                            4.0.4
    calendar                                                       4.0.0
    ctype                                                          4.0.4
    curl                                                           4.0.2
    date                                                           4.0.0
    dom                                          20031129          5.0.0
    ereg                                                           4.0.0  5.3.0
    fileinfo                                     1.0.5-dev         4.0.0
    filter                                       0.11.0            5.2.0
    ftp                                                            4.0.0
    gd                                                             4.0.0
    gettext                                                        4.0.0
    hash                                         1.0               5.1.2
    iconv                                                          4.0.5
    imap                                                           4.0.0
    json                                         1.2.1             5.2.0
    libxml                                                         5.0.0
    mbstring                                                       4.0.6
    mcrypt                                                         4.0.0
    mhash                                                          4.0.0
    mysql                                        1.0               4.0.0
    mysqli                                       0.1               5.0.0
    OAuth                                        1.0-dev           5.1.0
    openssl                                                        4.0.4
    pcre                                                           4.0.0
    session                                                        4.0.0
    shmop                                                          4.0.0
    soap                                                           5.0.0
    sockets                                                        4.1.0
    sqlite3                                      0.7-dev           5.3.0
    standard                                                       4.0.0
    tidy                                         2.0               4.0.0
    tokenizer                                    0.1               4.2.0
    wddx                                                           4.0.0
    xdebug                                       2.1.0             5.2.0
    xml                                                            4.0.0
    xmlreader                                    0.1               5.0.0
    xmlrpc                                       0.51              4.1.0
    xmlwriter                                    0.1               5.1.2
    xsl                                          0.1               5.0.0
    zlib                                         1.1               4.0.0
    -------------------------------------------------------------------------------
    A TOTAL OF 48 EXTENSIONS WERE FOUND
    -------------------------------------------------------------------------------
    Time: 0 seconds, Memory: 6.25Mb
    -------------------------------------------------------------------------------
1 This column specify the version of extension that was documented
2 This column specify which are the php versions (minimum and maximum) supported by the extension
Tip
You can filter result by extension

Example: if you want only SPL extension, enter command below.

$ phpci list-extensions SPL

7.3.5. list-interfaces command

This command allow to print the list of documented interfaces available with your version of PHP_CompatInfo, from your extensions loaded (or defined into XML configuration file).

If you forget options, enter command below.

$ phpci list-interfaces --help

That will show you this help screen:

List all interfaces referenced in the data base.

Usage:
  phpci [options] list-interfaces [options] <extension>

Options:
  --reference=reference     The name of the reference to use
  --report-file=reportFile  Write the report to the specified file path
  --help-reference          List of reference available
  -h, --help                show this help message and exit

Arguments:
  extension  (optional) Limit output only to this extension
Short Option Long Option Description

--reference

This option tells what reference dictionnary to use. May be either one providing by the package distribution or your own.

--report-file

This option identify the file where results will be written.

--help-reference

Remember you what are reference dictionnary available in default distribution.

-h

--help

With this option, you can get information about the actual list of command line options.

Example
$ phpci list-interfaces
    -------------------------------------------------------------------------------
    PHP COMPAT INFO INTERFACES REFERENCE
    -------------------------------------------------------------------------------
    INTERFACES                                   EXTENSION 1     VERSION 2
    -------------------------------------------------------------------------------
    ArrayAccess                                  SPL               5.1.0
    Countable                                    SPL               5.1.0
    Iterator                                     SPL               5.1.0
    IteratorAggregate                            SPL               5.1.0
    OuterIterator                                SPL               5.1.0
    RecursiveIterator                            SPL               5.1.0
    SeekableIterator                             SPL               5.1.0
    Serializable                                 SPL               5.1.0
    SplObserver                                  SPL               5.1.0
    SplSubject                                   SPL               5.1.0
    Traversable                                  SPL               5.1.0
    -------------------------------------------------------------------------------
    A TOTAL OF 11 INTERFACES WERE FOUND
    -------------------------------------------------------------------------------
    Time: 0 seconds, Memory: 6.25Mb
    -------------------------------------------------------------------------------
1 This column specify the name of extension that provide these interfaces
2 This column specify which are the php versions (minimum and maximum) supported by the interface
Tip
You can filter result by extension

Example: if you want only SPL extension interfaces, enter command below.

$ phpci list-interfaces SPL

7.3.6. list-classes command

This command allow to print the list of documented classes available with your version of PHP_CompatInfo, from your extensions loaded (or defined into XML configuration file).

If you forget options, enter command below.

$ phpci list-classes --help

That will show you this help screen:

List all classes referenced in the data base.

Usage:
  phpci [options] list-classes [options] <extension>

Options:
  --reference=reference     The name of the reference to use
  --report-file=reportFile  Write the report to the specified file path
  --help-reference          List of reference available
  -h, --help                show this help message and exit

Arguments:
  extension  (optional) Limit output only to this extension
Short Option Long Option Description

--reference

This option tells what reference dictionnary to use. May be either one providing by the package distribution or your own.

--report-file

This option identify the file where results will be written.

--help-reference

Remember you what are reference dictionnary available in default distribution.

-h

--help

With this option, you can get information about the actual list of command line options.

Example
$ phpci list-classes
    -------------------------------------------------------------------------------
    PHP COMPAT INFO CLASSES REFERENCE
    -------------------------------------------------------------------------------
    CLASSES                                      EXTENSION 1     VERSION 2
    -------------------------------------------------------------------------------
    AppendIterator                               SPL               5.1.0
    ArrayIterator                                SPL               5.0.0
    ArrayObject                                  SPL               5.0.0
    BadFunctionCallException                     SPL               5.1.0

    ... <more results> ...

    mysqli_warning                               mysqli            5.0.0
    php_user_filter                              standard          5.0.0
    stdClass                                     Core              4.0.0
    tidy                                         tidy              4.0.0
    tidyNode                                     tidy              5.0.1
    -------------------------------------------------------------------------------
    A TOTAL OF 125 CLASSES WERE FOUND
    -------------------------------------------------------------------------------
    Time: 0 seconds, Memory: 6.25Mb
    -------------------------------------------------------------------------------
1 This column specify the name of extension that provide these classes
2 This column specify which are the php versions (minimum and maximum) supported by the class
Tip
You can filter result by extension

Example: if you want only SPL extension classes, enter command below.

$ phpci list-classes SPL

7.3.7. list-functions command

This command allow to print the list of documented functions available with your version of PHP_CompatInfo, from your extensions loaded (or defined into XML configuration file).

If you forget options, enter command below.

$ phpci list-functions --help

That will show you this help screen:

List all functions referenced in the data base.

Usage:
  phpci [options] list-functions [options] <extension>

Options:
  --reference=reference     The name of the reference to use
  --report-file=reportFile  Write the report to the specified file path
  --help-reference          List of reference available
  -h, --help                show this help message and exit

Arguments:
  extension  (optional) Limit output only to this extension
Short Option Long Option Description

--reference

This option tells what reference dictionnary to use. May be either one providing by the package distribution or your own.

--report-file

This option identify the file where results will be written.

--help-reference

Remember you what are reference dictionnary available in default distribution.

-h

--help

With this option, you can get information about the actual list of command line options.

Example
$ phpci list-functions
    -------------------------------------------------------------------------------
    PHP COMPAT INFO FUNCTIONS REFERENCE
    -------------------------------------------------------------------------------
    FUNCTIONS                                    EXTENSION 1     VERSION 2
    -------------------------------------------------------------------------------
    _                                            gettext           4.0.0
    abs                                          standard          4.0.0
    acos                                         standard          4.0.0
    acosh                                        standard          4.0.7

    ... <more results> ...

    zend_logo_guid                               standard          4.0.0
    zend_thread_id                               Core              5.0.0
    zend_version                                 Core              4.0.0
    zlib_get_coding_type                         zlib              4.3.2
    -------------------------------------------------------------------------------
    A TOTAL OF 1575 FUNCTIONS WERE FOUND
    -------------------------------------------------------------------------------
    Time: 1 second, Memory: 6.25Mb
    -------------------------------------------------------------------------------
1 This column specify the name of extension that provide these functions
2 This column specify which are the php versions (minimum and maximum) supported by the function
Tip
You can filter result by extension

Example: if you want only SPL extension functions, enter command below.

$ phpci list-functions SPL

7.3.8. list-constants command

This command allow to print the list of documented constants available with your version of PHP_CompatInfo, from your extensions loaded (or defined into XML configuration file).

If you forget options, enter command below.

$ phpci list-constants --help

That will show you this help screen:

List all constants referenced in the data base.

Usage:
  phpci [options] list-constants [options] <extension>

Options:
  --reference=reference     The name of the reference to use
  --report-file=reportFile  Write the report to the specified file path
  --help-reference          List of reference available
  -h, --help                show this help message and exit

Arguments:
  extension  (optional) Limit output only to this extension
Short Option Long Option Description

--reference

This option tells what reference dictionnary to use. May be either one providing by the package distribution or your own.

--report-file

This option identify the file where results will be written.

--help-reference

Remember you what are reference dictionnary available in default distribution.

-h

--help

With this option, you can get information about the actual list of command line options.

Example
$ phpci list-constants
    -------------------------------------------------------------------------------
    PHP COMPAT INFO CONSTANTS REFERENCE
    -------------------------------------------------------------------------------
    CONSTANTS                                    EXTENSION 1     VERSION 2
    -------------------------------------------------------------------------------
    AF_INET                                      sockets           4.1.0
    AF_INET6                                     sockets           4.1.0
    AF_UNIX                                      sockets           4.1.0
    APACHE_MAP                                   soap              5.0.0
    ASSERT_ACTIVE                                standard          4.0.0

    ... <more results> ...

    XSL_CLONE_NEVER                              xsl               5.0.0
    __CLASS__                                    Core              4.3.0
    __COMPILER_HALT_OFFSET__                     Core              5.1.0
    __DIR__                                      Core              5.3.0
    __FILE__                                     Core              4.0.0
    __FUNCTION__                                 Core              4.3.0
    __LINE__                                     Core              4.0.0
    __METHOD__                                   Core              5.0.0
    __NAMESPACE__                                Core              5.3.0
    -------------------------------------------------------------------------------
    A TOTAL OF 1726 CONSTANTS WERE FOUND
    -------------------------------------------------------------------------------
    Time: 0 seconds, Memory: 6.25Mb
    -------------------------------------------------------------------------------
1 This column specify the name of extension that provide these constants
2 This column specify which are the php versions (minimum and maximum) supported by the constant
Tip
You can filter result by extension

Example: if you want only SPL extension constants, enter command below.

$ phpci list-constants SPL

8. The XML Configuration File

8.1. Main options

The attributes of the <phpcompatinfo> element can be used to configure PHP_CompatInfo’s core functionnality.

<?xml version="1.0" encoding="utf-8" ?>
<phpcompatinfo
    reference="PHP5"
    report="summary"
    reportFileAppend="false"
    cacheDriver="file"
    recursive="false"
    fileExtensions="php, inc, phtml"
    consoleProgress="true"
    verbose="false"
    >

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

The XML configuration above corresponds to the default behaviour of the phpcli tool.

reference

Data dictionnary reference name. Defaults to PHP5 for all PHP4 and PHP5 components depending of your extensions loaded.

report

Kind of report to produces. May be either summary, source, xml, token, extension, namespace, interface, class, function, constant, global

reportFile

File that will contains the console results. Defaults output to console only.

reportFileAppend

If you used the reportFile option, shall we replace its contents or not.

cacheDriver

Either you use the file system cache, or don’t want to cache results null.

recursive

If you want to explore sub-directories of data source provided (true) or not (false).

fileExtensions

A comma separated list of file extensions to parse.

consoleProgress

Display (true) or not (false) a progress bar while scanning data source.

verbose

Output more verbose information.

8.2. Cache options

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

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

</phpcompatinfo>

The <cache> element and its <options> child can be used to improve speed of parsing.

Default behavior will cache parsing results in a serialized data format on files backend of your local file system.

save_path

this is the path where the files (pci_<md5Hash>) are created.

gc_probability

gc_probability is used to manage probability that the gc (garbage collection) routine is started. Defaults to 1

gc_maxlifetime

gc_maxlifetime specifies the number of seconds after which data will be seen as garbage and potentially cleaned up. Garbage collection may occur after parsing data source. Defaults to 86400 (1 day)

Tip To clean the cache, set the probability (gc_probability) to 100, and reduce the life time (gc_maxlifetime) to 1 second.

8.3. References

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

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

</phpcompatinfo>

The <references> element and its <reference> children can be used to specify what extension you want to detect and none others.

Default behaviour will auto-detect all your extensions loaded.

8.4. Setting PHP INI settings

<?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>

The <php> element and its <ini> children can be used to configure PHP settings.

Note With phpci console tool, you can also sets a PHP directive value with --ini-set switch.
Examples
$ phpci --ini-set memory_limit=140M print /path/to/mySource

// both give same results
$ phpci --ini-set short_open_tag print /path/to/mySource
$ phpci --ini-set short_open_tag=true print /path/to/mySource

8.5. Excluding Files or Elements from parsing

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

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

</phpcompatinfo>

The <excludes> element and its children can be used to configure what element to ignore from parsing. It may be a list of folders (<directory>), files, extensions, interfaces, classes, functions or constants.

Default behaviour ignore nothing.

Note With phpci console tool, you can invoke it with the following switch:
--exclude-pattern <id>
Example
$ phpci --exclude-pattern demo print /path/to/mySource

8.6. Scan Listeners

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

    <listeners>
        <listener class="className" file="/path/to/filename">
            <arguments>
            </arguments>
        </listener>
        <listener class="PHP_CompatInfo_Listener_File" />
        <listener class="PHP_CompatInfo_Listener_Growl">
            <arguments>
                <string>PHP_CompatInfo</string>
                <array>
                    <element key="info">
                        <array>
                            <element key="display">
                                <string>Information</string>
                            </element>
                            <element key="enabled">
                                <boolean>true</boolean>
                            </element>
                        </array>
                    </element>
                    <element key="warning">
                        <array>
                            <element key="enabled">
                                <boolean>true</boolean>
                            </element>
                        </array>
                    </element>
                </array>
                <string>mamasam</string>
                <array>
                    <element key="host">
                        <string>192.168.1.2</string>
                    </element>
                    <element key="timeout">
                        <integer>10</integer>
                    </element>
                    <element key="debug">
                        <string>/path/to/logFile</string>
                    </element>
                </array>
            </arguments>
        </listener>
    </listeners>

</phpcompatinfo>

The <listeners> element and its <listener> children can be used to attach additional observers to the parses process.

The phpci console tool know in standard distribution the File and Growl listeners.

Please refer to PEAR::Net_Growl package for configuration options.

You may add your own observer. To do so, specify the class name (class attribute of <listener> element) hosted by a file (file attribute of the same <listener> element) that implement the SplObserver interface.

8.7. Plugins

<?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>

The <plugins> element and its <reference> children can be used to specify your own data dictionary references. Usefull when an extension data dictionary is not available in the standard distribution.

Default behaviour is to load all PHP4 and PHP5 known elements referenced by the PHP_CompatInfo_Reference_PHP5 class. See the reference attribute of <phpcompatinfo> element.

You may add your own plugin. To do so, specify the class name (class attribute of <reference> element) hosted by a file (file attribute of the same <reference> element). Your class should inherit from PHP_CompatInfo_Reference_PluginsAbstract abstract class that implement the PHP_CompatInfo_Reference interface.

Note With phpci console tool, you can invoke it with the following switch:
--reference <name>
Example
$ phpci --reference MyReference print /path/to/mySource

9. Appendix A: Postprocessing the report file with XSLT

9.1. Main options

There are several XSLT scripts which can be used to transform the XML report into some nice html pages.

To do this, make sure you’ve first generate the XML report, i.e:

 $ phpci print --report xml --report-file <report.xml> <dataSource>

And then use the xslt processor to transform the XML to a beautiful XHTML page.

 $ xsltproc -o <output_page.html> summary.xsl <report.xml>
file list collapsed
Figure 1. Example with sources file list collapsed
file list expanded
Figure 2. Example with sources file list expanded

10. Appendix B: UML classes diagram

UML class diagram

This work is licensed under the BSD License.

The full legal text of the license is given below.

 Copyright (c) 2010-2012, Laurent Laville <pear@laurent-laville.org>

 Credits to :

    * Davey Shafik
      Original author, he introduced his proposal in 2004,
      that gave birth of a PEAR package named PHP_CompatInfo.
    * Remi Collet
      Contributor on many extensions and unit tests since version 2.0.0RC2


 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:

     * Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
     * Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
     * Neither the name of the authors nor the names of its contributors
       may be used to endorse or promote products derived from this software
       without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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