[preg_grep 从数组返回匹配的值](preg%E5%87%BD%E6%95%B0/preg_grep%E4%BB%8E%E6%95%B0%E7%BB%84%E8%BF%94%E5%9B%9E%E5%8C%B9%E9%85%8D%E7%9A%84%E5%80%BC.md) [preg_last_error 正则匹配错误](preg%E5%87%BD%E6%95%B0/preg_last_error%E6%AD%A3%E5%88%99%E5%8C%B9%E9%85%8D%E9%94%99%E8%AF%AF.md) [preg_match / preg_match_all](preg%E5%87%BD%E6%95%B0/preg_match-preg_match_all.md) [preg_replace 正则替换](preg_replace%E6%AD%A3%E5%88%99%E6%9B%BF%E6%8D%A2.md) [preg_replace_callback](preg%E5%87%BD%E6%95%B0/preg_replace_callback.md) [preg_split](preg%E5%87%BD%E6%95%B0/preg_split.md)