$str = \'A|B||C|D\'; echo substr($str,0,strpos($str, \'||\')); 输出:A|B 相关文章: 2021-09-15 2021-12-02 2021-06-26 2021-12-31 2021-11-29 2021-06-30 2021-07-02 2021-08-25