Remove specified keys from an array.

remove_array_keys.php

<?php
/**
 *  Remove specified keys from an array.
 *
 *  @param   array  &$array  The reference to the array to be modified
 *  @param   array  $keys    An array of keys to be removed
 *  @return  void
 */
function remove_array_keys( &$array, $keys ) {
    foreach( $array as $key => &$value ) {
        if( is_array( $value ) ) {
            remove_array_keys( $value, $keys );
        } else {
            if( in_array( $key, $keys ) ) {
                unset( $array[$key] );
            }
        }
    }
}