TMD 去掉双引号我就不用正则表达式！！！

<?php

$str="'你好123'";
echo $str;

$res = trim($str,"\'\'");

echo $res;


'你好123'你好123

<?php

$str="\"你好123\"";
echo $str;

$res = trim($str,"\"\"");

echo $res;


"你好123"你好123

 

 

rtrim

ltrim

trim($str,'符号');

同理。