• parse a single file
• parse a folder/directory
• parse an array (list of file)
• ability to give a list of functions to ignore when calculating the version needed
• ability to give a list of directories to ignore when calculating the version needed
• ability to go recursively or not into folder to find files
• ability to reduce or extends list of extensions to parse for PHP code
• ability to give a list of constants to ignore when calculating the version needed. Available since version 1.2.0
• ability to get list of functions related to a PHP version (or a subset). Available since version 1.2.0
• ability to give a list of php modules/extensions to ignore when calculating the version needed. Available since version 1.4.0
• ability to give a list of php versions to ignore when calculating the version needed. Available since version 1.4.0
• ability to exclude from parsing scope, some functions, extensions, constants, based on conditionnal code. Available since version 1.7.0
• ability to know conditional code (such as function_exists) used by php scripts. Available since version 1.7.0

It find out the minimum version and the extensions required for a piece of code to run

PHP_Compat provides missing functionality in the form of functions and constants for older versions of PHP.

The replicated functions are designed to be interchangable with their native equivilants. They have the same signature, same return values and throw the same errors. Each function is unit tested to ensure accuracy.