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php登录脚本 undefined variable : _session script

转载 作者:行者123 更新时间:2023-12-02 22:28:39 24 4
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我正在尝试创建一个登录脚本,但是我遇到了这个错误 undefined variable :_session看下面的页面

//checklogin.php

<?php

ob_start();
$host="localhost"; // Host name
$username="xxxxx"; // Mysql username
$password="xxxx"; // Mysql password
$db_name="test"; // Database name
$tbl_name="members"; // Table name

// Connect to server and select databse.

mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// Define $myusername and $mypassword

$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

// To protect MySQL injection (more detail about MySQL injection)

$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row

$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 row

if($count==1){

// Register $myusername, $mypassword and redirect to file "login_success.php"

$_session['name']= myusername;
$_session['pass']= mypassword;
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
ob_end_flush();
?>

//登录成功.php

// Check if session is not registered, redirect back to main page. 
// Put this code in first line of web page.
<?php
session_start();
if(!$_session['name']= myusername){
header("location:main_login.php");
}
?>

<html>
<body>
Login Successful
</body>
</html>

最佳答案

$_SESSION不是$_session你还需要在页面顶部添加session_start()

来自 PHP 文档

Variables in PHP are represented by a dollar sign followed by the name of the variable. The variable name is case-sensitive.

关于php登录脚本 undefined variable : _session script,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12604860/

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