排除crypt（）生成的某些字符

Question

I'm using crypt() in PHP to generate a unique token string. My problem is that some tokens generated include periods (.) at the end of the token, and this is confusing for users that need to copy and paste it elsewhere... some see it as the end of a sentence rather than part of the token.

Unless I'm mistaken, I can't just replace the periods after running crypt() because it will no longer be a unique identifier.

Is there a way to restrict the characters that are output by crypt()?

Answer 1

如果它只是一个随机字符串使用随机字母生成器或看看uniqid 。

Answer 2

have you tought about Sha-1 instead of Crypt? would look like something like that to generate a small token.

$str = time().$token;
$result = substr(sha1($str),10)

else you may use that if you RLLY need to.

$result = preg_replace('/\./','{DOT}',crypt('mypassword'));

and to retrieve your initial

str_replace('{DOT}','.',$result)

Answer 3

根据令牌的最终用法，您可以在令牌的开头和结尾添加分隔符，以便对起点和终点所在的用户更明显。