Get font-awesome icons from css file

get-font-awesome-icon-classes.php

<?php 

**
 * Remove items from an array
 * @param  array                $array                  The array to manage
 * @param  void                 $element                An array or a string of the item to remove
 * @return array                                        The cleaned array with resetted keys
 */
function array_delete($array, $element) {
    return (is_array($element)) ? array_values(array_diff($array, $element)) : array_values(array_diff($array, array($element)));
}


$icons_file ='assets/font-awesome/css/font-awesome.css';
if ( ! is_readable( $icons_file ) ) {
    return array();
}
$parsed_file = file_get_contents($icons_file);
preg_match_all("/fa\-([a-zA-z0-9\-]+[^\:\.\,\s])/", $parsed_file, $matches);
$exclude_icons = array("fa-lg", "fa-2x", "fa-3x", "fa-4x", "fa-5x", "fa-ul", "fa-li", "fa-fw", "fa-border", "fa-pulse", "fa-rotate-90", "fa-rotate-180", "fa-rotate-270", "fa-spin", "fa-flip-horizontal", "fa-flip-vertical", "fa-stack", "fa-stack-1x", "fa-stack-2x", "fa-inverse", 'fa-pull-left', 'fa-pull-right');
$icons = array_delete($matches[0], $exclude_icons);
return $icons;