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請參見下面的代碼：使用會話變量登錄後，在其他PHP文件
的login.php
<?php
session_start(); // Starting Session
$error=''; // Variable To Store Error Message
if (isset($_POST['submit'])) {
if (empty($_POST['username']) || empty($_POST['password'])) {
$error = "Username or Password is invalid";
}
else
{
// Define $username and $password
$username=$_POST['username'];
$password=$_POST['password'];
// Establishing Connection with Server by passing server_name, user_id and password as a parameter
$connection = mysql_connect("localhost", "root", "");
// To protect MySQL injection for Security purpose
$username = stripslashes($username);
$password = stripslashes($password);
$username = mysql_real_escape_string($username);
$password = mysql_real_escape_string($password);
// Selecting Database
$db = mysql_select_db("company", $connection);
// SQL query to fetch information of registerd users and finds user match.
$query = mysql_query("select * from login where password='$password' AND username='$username'", $connection);
$rows = mysql_num_rows($query);
if ($rows == 1) {
$_SESSION['login_user']=$username; // Initializing Session
header("location: profile.php"); // Redirecting To Other Page
} else {
$error = "Username or Password is invalid";
}
mysql_close($connection); // Closing Connection
}
}
?>
profile.php
<?php
// Establishing Connection with Server by passing server_name, user_id and password as a parameter
$connection = mysql_connect("localhost", "root", "");
// Selecting Database
$db = mysql_select_db("company", $connection);
session_start();// Starting Session
// Storing Session
$user_check=$_SESSION['login_user'];
// SQL Query To Fetch Complete Information Of User
$ses_sql=mysql_query("select username from login where username='$user_check'", $connection);
$row = mysql_fetch_assoc($ses_sql);
$login_session =$row['username'];
if(!isset($login_session)){
mysql_close($connection); // Closing Connection
header('Location: index.php'); // Redirecting To Home Page
}
?>
<html> ............... </html>
我們應該使用下面顯示的每個php文件中下面的代碼部分？
<?php
// Establishing Connection with Server by passing server_name, user_id and password as a parameter
$connection = mysql_connect("localhost", "root", "");
// Selecting Database
$db = mysql_select_db("company", $connection);
session_start();// Starting Session
// Storing Session
$user_check=$_SESSION['login_user'];
// SQL Query To Fetch Complete Information Of User
$ses_sql=mysql_query("select username from login where username='$user_check'", $connection);
$row = mysql_fetch_assoc($ses_sql);
........... ?>
我學會創建使用此site。但當我看到profile.php它使用的代碼部分上面的的login.php和profile.php：檢查連接和數據庫然後使用$user_check=$_SESSION['login_user'];，然後用下面的代碼：
$ses_sql=mysql_query("select username from login where username='$user_check'", $connection);
$row = mysql_fetch_assoc($ses_sql);
如果我有另一個php文件，如下面的代碼使用支付網關：
send.php
<?php
include_once("sender.php");
$url = 'http://example.com/payment/gateway-send';
$api = ' Your-API ';
$amount = 1000;
$redirect = 'REDIRECT-PAGE';
$result = send($url,$api,$amount,$redirect);
if($result > 0 && is_numeric($result)){
$go = "http://example.com/payment/gateway-$result";
header("Location: $go");
}
?>
我應該在send.php文件的開頭，也爲其他php文件添加以下代碼？
<?php
// Establishing Connection with Server by passing server_name, user_id and password as a parameter
$connection = mysql_connect("localhost", "root", "");
// Selecting Database
$db = mysql_select_db("company", $connection);
session_start();// Starting Session
// Storing Session
$user_check=$_SESSION['login_user'];
// SQL Query To Fetch Complete Information Of User
$ses_sql=mysql_query("select username from login where username='$user_check'", $connection);
$row = mysql_fetch_assoc($ses_sql);
.................?>
你的問題是什麼？ –
@Prashant Srivastav：我想知道如何在每個php文件中使用session？我應該添加我的文章中的最新代碼在其他我的PHP文件？ – java
您需要在每個要使用'$ _SESSION'數組的頁面中使用'session_start（）' – Umair