hash_equals

(PHP 5 >= 5.6.0, PHP 7)

hash_equals — 锟缴凤拷止时锟津攻伙拷锟斤拷锟街凤拷锟斤拷锟饺斤拷

说锟斤拷

hash_equals ( string $known_string , string $user_string ) : bool

锟饺斤拷锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟角凤拷锟斤拷龋锟斤拷锟斤拷锟斤拷锟斤拷锟绞憋拷锟斤拷锟斤拷锟斤拷呛愣拷摹锟�

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷止时锟津攻伙拷锟斤拷锟街凤拷锟斤拷锟饺较筹拷锟斤拷锟叫ｏ拷 锟斤拷锟界，锟斤拷锟斤拷锟斤拷锟节比斤拷 crypt() 锟斤拷锟斤拷锟较Ｖ碉拷某锟斤拷锟斤拷锟�

锟斤拷锟斤拷

known_string

锟斤拷知锟斤拷锟饺的★拷要锟斤拷锟斤拷冉系锟� string

user_string

锟矫伙拷锟结供锟斤拷锟街凤拷锟斤拷

锟斤拷锟斤拷值

锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷锟绞憋拷锟斤拷锟� TRUE锟斤拷锟斤拷锟津返伙拷 FALSE锟斤拷

锟斤拷锟斤拷锟届常

锟斤拷锟斤拷锟斤拷峁╋拷锟� 2 锟斤拷锟斤拷锟斤拷锟斤拷锟轿猴拷一锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷 锟结导锟斤拷 E_WARNING 锟斤拷息锟斤拷

锟斤拷锟斤拷

Example #1 hash_equals() 锟斤拷锟斤拷

<?php
$expected  = crypt('12345', '$2a$07$usesomesillystringforsalt$');
$correct   = crypt('12345', '$2a$07$usesomesillystringforsalt$');
$incorrect = crypt('apple',  '$2a$07$usesomesillystringforsalt$');

var_dump(hash_equals($expected, $correct));
var_dump(hash_equals($expected, $incorrect));
?>

锟斤拷锟斤拷锟斤拷锟教伙拷锟斤拷锟斤拷锟�

bool(true)
bool(false)

注锟斤拷

Note:

要锟斤拷晒锟斤拷锟斤拷斜冉希锟斤拷锟矫达拷锟斤拷峁╋拷锟� 2 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷同锟斤拷锟饺碉拷锟街凤拷锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷峁╋拷锟斤拷址锟斤拷锟斤拷锟斤拷炔锟酵拷锟斤拷锟矫达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟� FALSE锟斤拷 锟斤拷时锟津攻伙拷锟侥筹拷锟斤拷锟铰ｏ拷锟斤拷知锟街凤拷锟斤拷锟侥筹拷锟饺匡拷锟杰会被泄露锟斤拷

Note:

锟角筹拷锟斤拷要锟斤拷一锟斤拷锟角ｏ拷锟矫伙拷锟结供锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷锟角第讹拷锟斤拷锟斤拷锟斤拷锟斤拷