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Home > Backend Development > PHP Tutorial > 【正则表达式】检测字符串只包含数字、字母、下划线、汉字,该如何解决

【正则表达式】检测字符串只包含数字、字母、下划线、汉字,该如何解决

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Release： 2016-06-13 12:00:27
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【正则表达式】检测字符串只包含数字、字母、下划线、汉字
RT
要验证一下用户名，只包含数字、字母、下划线、汉字，要求即使打乱顺序也能测出来
------解决方案--------------------
'/^[\x7f-\xffA-Za-z0-9_]+$/'
------解决方案--------------------

$s = '％';<br />var_dump(preg_match('/^\w+$/u', $s)); //int(0)<br />var_dump(preg_match('/^[\x7f-\xffA-Za-z0-9_]+$/', $s)); //int(1)
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全角的标点不当做汉字



引用:
'/^[\x7f-\xffA-Za-z0-9_]+$/'
Related labels：
dump match nbsp
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