$phonenumber = '13712345678'; if(preg_match("/^(13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8|9]|17[0-9]|18[0|1|2|3|5|6|7|8|9])\d{8}$/",$phonenumber)){ echo "是手机号码"; }else{ echo "不是手机号码";