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How to achieve automatic login in seven days in php

藏色散人Original: 2021-12-16 10:31:422808browse

php method to achieve seven-day automatic login: 1. Create a new show.php file to implement the login page; 2. Create a function.php file to implement encrypted cookies; 3. Set the user name and password judgment; 4. Open the session and You can automatically log in within a week.

#The operating environment of this article: Windows 7 system, PHP version 7.4, Dell G3 computer.

php How to realize automatic login within seven days?

PHP enables automatic login within a week:

##1 .Create four new files

How to achieve automatic login in seven days in php

show.php

<?php
?>
<html >

<head>
<meta charset="utf-8">
<title>测试</title>
</head>
<body>
<form action="login.php" method="post">
用户名<input type="text" name="name"/>
密码<input type="text" name="psd"/>
自动登录<input type="radio" name="auto">
    <input type="submit" value="提交"/>

</form>
</body>
</html>

function.php//Encrypted cookie

Here I used the XOR encryption method, because after two XOR times, it will change back to the original value

<?php
function encryption ($value, $type=0) {
$key = md5(&#39;denglu&#39;);//里边的字符可以自己设置
if (!$type) {
return str_replace(&#39;=&#39;, &#39;&#39;, base64_encode($value ^ $key));
}

$value = base64_decode($value);
return $value ^ $key;
}

<?php
require_once(&#39;function.php&#39;);
session_start();//开启session
header("Content-Type: text/html; charset=UTF-8");

/*
 * 添加一些用户名和密码的判断
 * 。。。。。。。。。
 */

if(isset($_POST[&#39;auto&#39;])){//如果勾选了自动登陆一周
    if(!isset($_COOKIE[&#39;auto&#39;])){
        setcookie(&#39;auto&#39;,encryption($_POST[&#39;name&#39;]),7*24*3600+time());//设置cookie过期时间为一周后
    }
    $_SESSION[&#39;name&#39;] = $_POST[&#39;name&#39;];
    header(&#39;location:success.php&#39;);
}else{//没有勾选自动登陆一周
    $_SESSION[&#39;name&#39;] = $_POST[&#39;name&#39;];
    header(&#39;location:success.php&#39;);
}

success.php

<?php
session_start();//开启session
require_once(&#39;function.php&#39;);
header("Content-Type: text/html; charset=UTF-8");
if(isset($_SESSION[&#39;name&#39;])){
echo &#39;成功登陆session:用户名为&#39;.$_SESSION[&#39;name&#39;];
}
elseif(isset($_COOKIE[&#39;auto&#39;])){
echo &#39;成功登陆cookie:用户名为&#39;.encryption($_COOKIE[&#39;auto&#39;],1);
}else{//什么都没有的跳转到登录表单
header(&#39;location:show.php&#39;);
}

?>

Run it

How to achieve automatic login in seven days in php

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