PHP md5（）提供与MySQL md5不同的输出

Question

I'm trying to set up a login system, but I can't solve one problem: PHP is giving me an other output with md5(); than MySQL...

For example, in PHP:

$password = md5("brickmasterj");
return $password;

Returns:

3aa7b18f304e2e2a088cfd197351cfa8

But the MySQL equivalent gives me a shorter version:

3aa7b18f304e2e2a08

What's the problem? And how do I work with this while checking passwords?

Answer 1

我猜你的表的列长度有问题，将密码字段的长度设置为至少32

Answer 2

No way MySQL returns it of a length of < 32. If you would do a simple query like SELECT md5('brickmasterj') , you would see. Now you are most likely inserting the value into a column which is not wide enough.

Answer 3

Is your database field 32 characters long? Are you writing to the database using mysql's md5?

Answer 4

The hash size if always fixed. In your case the hash size is 128 bits. When converted to a ascii string it would be a 32 character string that contains only hexadecimal digits. so if you are storing variable character the length should be atleast 32 example: password varchar(32) should go in mysql table then you can call using php using select password from table where password =md5($password);