Example Analysis of PHP token Verification Generation Principle

In this paper, the principle of PHP token verification generation is described by examples. Share it for your reference, as follows:

<?php
/**
 * @Author: Ding Jianlong
 * @Date:  2019-03-20 00:38:01
 * @Last Modified by:  Ding Jianlong
 * @Last Modified time: 2019-03-22 17:50:59
 */
// Generate authentication for sending requests  token
// Here's key It can be content containing user information, without users + Different permissions 
function makeToken($key){
 //100 Effective and unchanged within seconds, and the time is adjusted according to actual needs. No. 1 3 Party login authorization 15 God. 
 return $token = md5($key.sha1(substr(time(),3,7)));
}
// Background similar verification, 
function checkToken($key,$token){
 $true = md5($key.sha1(substr(time(),3,7)));
 if($token == $true){
 return true;  //token Correct 
 }else{
 return false;
 }
}
$key = 'https://github.com/idjl/';
echo $t = makeToken($key);
var_dump(checkToken($key,'259521122'));
var_dump(checkToken($key,$t));
var_dump(checkToken($key,'259521122'));

Run results:

e4ce1a6c66246eee048f11a540bf197ebool(false)
bool(true)
bool(false)

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I hope this article is helpful to everyone's PHP programming.