- mb_strpos: documentation ( source)
- var_dump: documentation ( source)
- utf8_decode: documentation ( source)
- strpos: documentation ( source)
- header: documentation ( source)
<?php
header('Content-Type: text/html; charset=utf-8');
$str = "颜色代码";
var_dump(strpos($str, "代"));
var_dumo(mb_strpos($str, utf8_decode("颜色"), 0 ,"GBK"));