px-files/_sys/php/bowl.php
public function each( $func ){
		foreach( $this->get_keys() as $key ){
			$src = $this->get_clean( $key );
			$src = call_user_func( $func, $src );
			$src = $this->replace( $src, $key );
		}
		return $this;
	}
public function each( $func ){
		foreach( $this->get_keys() as $key ){
			$src = $this->get_clean( $key );
			$src = call_user_func( $func, $src );
			$src = $this->replace( $src, $key );
		}
		return $this;
	}
全ボウルのコンテンツに同じ加工を施す。

@param callback $func 加工処理関数
@return object $bowlオブジェクト