array   PHP_CompatInfo::parseDir ( 
    string $dir
     , array $options
      = array()
    
   )
Parse a directory recursively for its compatibility info
$dir
     Path of folder to parse
$options
     An array of options where:
file_ext Contains an array of file extensions to parse for PHP code. Default: php, php4, inc, phtml
recurse_dir Boolean on whether to recursively find files
debug Contains a boolean to control whether extra ouput is shown.
ignore_functions Contains an array of functions to ignore when calculating the version needed.
ignore_constants Contains an array of constants to ignore when calculating the version needed.
ignore_files Contains an array of files to ignore. File names are case insensitive.
ignore_dirs Contains an array of directories to ignore. Directory names are case insensitive.
ignore_extensions Contains an array of php extensions to ignore when calculating the version needed.
ignore_versions Contains an array of php versions to ignore when calculating the version needed.
ignore_functions_match Contains an array of function patterns to ignore when calculating the version needed.
ignore_extensions_match Contains an array of extension patterns to ignore when calculating the version needed.
ignore_constants_match Contains an array of constant patterns to ignore when calculating the version needed.
throws no exceptions thrown
since version 0.8.0 (2004-04-22)
This function can not be called statically.
   array - a hash which contains information keys:
   ignored_functions,
   ignored_extensions,
   ignored_constants,
   max_version,
   version,
   extensions,
   constants,
   tokens,
   cond_code
  
Suppose we have these dirs/files to parse :
PHP_CompatInfo/tests/parseDir/ PHP5/tokens.php5 PHP5/upload_error.php extensions.php phpinfo.php
See package distribution to know in details content of this scripts.
<?php
require_once 'PHP/CompatInfo.php';
$pci = new PHP_CompatInfo();
$input   = 'PHP_CompatInfo/tests/parseDir/';
$options = array('recurse_dir' => true,
                 'file_ext'    => array('php', 'php5')
                );
$res = $pci->parseDir($input, $options);
#var_export($res); // no need since PCI 1.8.0
?>
   We get such result.
array (
  'ignored_files' =>
  array (
  ),
  'ignored_functions' =>
  array (
  ),
  'ignored_extensions' =>
  array (
  ),
  'ignored_constants' =>
  array (
  ),
  'max_version' => '',
  'version' => '5.2.0',
  'classes' =>
  array (
    0 => 'Exception',
  ),
  'extensions' =>
  array (
  ),
  'constants' =>
  array (
    0 => 'PHP_SHLIB_SUFFIX',
    1 => 'TRUE',
    2 => 'UPLOAD_ERR_CANT_WRITE',
    3 => 'UPLOAD_ERR_EXTENSION',
    4 => 'UPLOAD_ERR_FORM_SIZE',
    5 => 'UPLOAD_ERR_INI_SIZE',
    6 => 'UPLOAD_ERR_NO_FILE',
    7 => 'UPLOAD_ERR_NO_TMP_DIR',
    8 => 'UPLOAD_ERR_OK',
    9 => 'UPLOAD_ERR_PARTIAL',
  ),
  'tokens' =>
  array (
    0 => 'abstract',
    1 => 'catch',
    2 => 'clone',
    3 => 'final',
    4 => 'implements',
    5 => 'instanceof',
    6 => 'interface',
    7 => 'private',
    8 => 'protected',
    9 => 'public',
    10 => 'throw',
    11 => 'try',
  ),
  'cond_code' =>
  array (
    0 => 2,
  ),
  'PHP_CompatInfo/tests/parseDir/extensions.php' =>
  array (
    'ignored_functions' =>
    array (
    ),
    'ignored_extensions' =>
    array (
    ),
    'ignored_constants' =>
    array (
    ),
    'max_version' => '',
    'version' => '4.3.2',
    'classes' =>
    array (
    ),
    'extensions' =>
    array (
    ),
    'constants' =>
    array (
      0 => 'PHP_SHLIB_SUFFIX',
      1 => 'TRUE',
    ),
    'tokens' =>
    array (
    ),
    'cond_code' =>
    array (
      0 => 2,
    ),
  ),
  'PHP_CompatInfo/tests/parseDir/phpinfo.php' =>
  array (
    'ignored_functions' =>
    array (
    ),
    'ignored_extensions' =>
    array (
    ),
    'ignored_constants' =>
    array (
    ),
    'max_version' => '',
    'version' => '4.0.0',
    'classes' =>
    array (
    ),
    'extensions' =>
    array (
    ),
    'constants' =>
    array (
    ),
    'tokens' =>
    array (
    ),
    'cond_code' =>
    array (
      0 => 0,
    ),
  ),
  'PHP_CompatInfo/tests/parseDir/PHP5/tokens.php5' =>
  array (
    'ignored_functions' =>
    array (
    ),
    'ignored_extensions' =>
    array (
    ),
    'ignored_constants' =>
    array (
    ),
    'max_version' => '',
    'version' => '5.0.0',
    'classes' =>
    array (
      0 => 'Exception',
    ),
    'extensions' =>
    array (
    ),
    'constants' =>
    array (
    ),
    'tokens' =>
    array (
      0 => 'abstract',
      1 => 'catch',
      2 => 'clone',
      3 => 'final',
      4 => 'implements',
      5 => 'instanceof',
      6 => 'interface',
      7 => 'private',
      8 => 'protected',
      9 => 'public',
      10 => 'throw',
      11 => 'try',
    ),
    'cond_code' =>
    array (
      0 => 0,
    ),
  ),
  'PHP_CompatInfo/tests/parseDir/PHP5/upload_error.php' =>
  array (
    'ignored_functions' =>
    array (
    ),
    'ignored_extensions' =>
    array (
    ),
    'ignored_constants' =>
    array (
    ),
    'max_version' => '',
    'version' => '5.2.0',
    'classes' =>
    array (
      0 => 'Exception',
    ),
    'extensions' =>
    array (
    ),
    'constants' =>
    array (
      0 => 'UPLOAD_ERR_CANT_WRITE',
      1 => 'UPLOAD_ERR_EXTENSION',
      2 => 'UPLOAD_ERR_FORM_SIZE',
      3 => 'UPLOAD_ERR_INI_SIZE',
      4 => 'UPLOAD_ERR_NO_FILE',
      5 => 'UPLOAD_ERR_NO_TMP_DIR',
      6 => 'UPLOAD_ERR_OK',
      7 => 'UPLOAD_ERR_PARTIAL',
    ),
    'tokens' =>
    array (
      0 => 'throw',
    ),
    'cond_code' =>
    array (
      0 => 0,
    ),
  ),
)
   
We have global result, then follow by each file parsed in sub-directories.