hash_equals()

描述

Compares two strings using the same time whether they’re equal or not.

Note: It can leak the length of a string when arguments of differing length are supplied.

This function was added in PHP 5.6. However, the Hash extension may be explicitly disabled>

参数

$a

(string)
(Required)
Expected string.

$b

(string)
(Required)
Actual, user supplied, string.