public function has($collection=null, $key=null) {
    list($collection, $key) = self::_wrapArgs(func_get_args(), 2);
    
    $collection = (array) self::_collection($collection);
    
    return self::_wrap(array_key_exists($key, $collection));
  }
public function has($collection=null, $key=null) {
    list($collection, $key) = self::_wrapArgs(func_get_args(), 2);
    
    $collection = (array) self::_collection($collection);
    
    return self::_wrap(array_key_exists($key, $collection));
  }
public function has ( $ collection = null , $ key = null ) { list ( $ collection , $ key ) = self :: _wrapArgs ( func_get_args ( ) , 2 ) ; $ collection = ( array ) self :: _collection ( $ collection ) ; return self :: _wrap ( array_key_exists ( $ key , $ collection ) ) ; }
Does the given key exist?
Does the given key exist?