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Home Backend Development PHP Tutorial 求注册正则匹配 后面或前面有“..”的不能注册

求注册正则匹配 后面或前面有“..”的不能注册

Jun 23, 2016 pm 02:40 PM

	username:"^\\w+$",						//用来用户注册。匹配由数字、26个英文字母或者下划线组成的字符串	username1:"^(\\w+)|([\\u4E00-\\u9FA5\\uF900-\\uFA2D]+)$",         //用来用户注册,可支持中文
Copy after login


求注册正则匹配 后面或前面有“..”的不能注册


回复讨论(解决方案)

那你给出一个可以满足注册,正则要求?

$p='/^\.\.|\.\.$/';
Copy after login

不需要正则,能用字符串函数的就不用正则

$str = "..zh..ddjjdd..";
$user_left = substr($str, 0,2);
$user_right = substr($str, -2);
if($user_left == '..' && $user_right == '..'){
echo "非法用户名";
} else {
echo "合法用户"; 
}
这样就可以

不需要正则,能用字符串函数的就不用正则

$str = "..zh..ddjjdd..";
$user_left = substr($str, 0,2);
$user_right = substr($str, -2);
if($user_left == '..' && $user_right == '..'){
echo "非法用户名";
} else {
echo "合法用户"; 
}
这样就可以 后面或前面有“..” &&应该改为||、or


不需要正则,能用字符串函数的就不用正则

$str = "..zh..ddjjdd..";
$user_left = substr($str, 0,2);
$user_right = substr($str, -2);
if($user_left == '..' && $user_right == '..'){
echo "非法用户名";
} else {
echo "合法用户"; 
}
这样就可以 后面或前面有“..” &&应该改为||、or
抱歉,写例子的时候粗心,是or或者||都行

看他写的要求貌似是英数、下划线、常用汉字和一些全角符号都允许呢

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