指定文字列に挟まれた文字列をすべて配列として取得する

function ary_extraction ($str_old, $str_from, $str_to){

	$ary_return = array();
	while (True) {

		$str_tmp = str_extraction($str_old, $str_from, $str_to, True);

		if ($str_tmp === False) {

			break;

		}
		$str_old = str_replace($str_tmp, '', $str_old);
		$str_tmp = str_replace($str_from, '', $str_tmp);

		$str_tmp = str_replace($str_to  , '', $str_tmp);
		if (strlen($str_tmp) > 0) {

			$ary_return[] = $str_tmp;

		}

	}
	return $ary_return;

}