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php-关于PHP 正则验证用户名的问题？张思

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Jun 02, 2016 am 11:28 AM

正则php

基本都可以，但这个不行，用户名换成张三就OK，为什么？新手的痛苦，谢谢。

<code> <?php $_string='张思';    $_char_pattern='/[<>\'\"\\ 　]/';    if(preg_match($_char_pattern,$_string)){        echo '用户名不得包含敏感字符！';    }else{        echo '没有敏感字符';    }?></code>

补充1：

对回答的回复：
空白的地方是2个空格，一个半角，一个全角

\s使用这个可以通过，单独使用半角空格也可以OK，加上全角过滤张思就过不去。

我刚学，这点还真心不懂；

谢谢回答，但愿能解决。

补充2：

JS验证可以通过张思！

<code>    if(/[\'\"\ 　]/.test(fm.username.value)){            alert("用户名包含非法字符");            fm.username.focus();            return false;                   }</code>

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