code: public static function isMatchSchema( $array, $schema ) {
          foreach ( $schema as $key => $value ) {
              if ( is_numeric( $key ) ) {
                  if ( ! isset( $array[ $value ] ) ) {
                      return FALSE;
                  }
              }
          }
          return TRUE;
      }
docs: ***********************************************************************
  SCHEMA METHODS
  ***********************************************************************