问下正则的问题
用户名,可以输入中文也可以输入英文,
我要如何写正则来判断呢。
不能中英混输,
中文10个汉字以内。英文在30个字母以内都可以。
大家说说怎么用正则来处理这类问题呢?
回复讨论(解决方案)
中文 ===》\x{4e00}-\x{9fa5}
英文 a-z
因此可以:
/^([\x{4e00}-\x{9fa5}]{1,10}|[a-z]{1,30})$/iu
不知道你是否允许空格
$pattern = "/^([\x{4e00}-\x{9fa5}]{1,10}|[a-z]{1,30})$/iu"; $test = array("这是中文","中文and英文","thisisenglish"); foreach($test as $word){ echo $word; echo " : "; echo preg_match($pattern,$word); echo "<br/>"; }
中文 ===》\x{4e00}-\x{9fa5}
英文 a-z
因此可以:
/^([\x{4e00}-\x{9fa5}]{1,10}|[a-z]{1,30})$/iu
不知道你是否允许空格
PHP code?123456789$pattern = "/^([\x{4e00}-\x{9fa5}]{1,10}|[a-z]{1,30})$/iu";$test……
我试试,看下效果,THANKS,
中文 ===》\x{4e00}-\x{9fa5}
英文 a-z
因此可以:
/^([\x{4e00}-\x{9fa5}]{1,10}|[a-z]{1,30})$/iu
不知道你是否允许空格
PHP code?123456789$pattern = "/^([\x{4e00}-\x{9fa5}]{1,10}|[a-z]{1,30})$/iu";$test……
OK。你是对的,向你学习。结账~~~

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