为什么我的binary（64）60 char密码哈希在phpmyadmin中显示为60个字符，但是导出时末尾有四个'\\ 0'？

Question

I know \\0 is ending strings. Why are there four? And why, in my php code, do I have to specifically take the substring of first 60 characters in order for password_verify to work? (eg $passhash = substr($result, 0, 60); )

Thanks for any and all help.

Answer 1

PHPMyAdmin is simply not displaying this to you.

You have a 64-byte field. It's always going to be 64 bytes. If you have 60 bytes used, the last four are going to be null bytes.