Jinsi ya Kufungua File Kwa Usalama Baada ya Login Katika PHP

Kuhifadhi na kufungua files baada ya login ni muhimu ili kuhakikisha kuwa data muhimu haipatikani kwa watumiaji wasioidhinishwa. Katika mwongozo huu, utajifunza jinsi ya kuunda mfumo wa login-based file access kwa kutumia PHP.

Mfano wa Code: Kufungua File Baada ya Login

1️⃣ Login ya Mtumiaji (login.php)

<?php
session_start();
$valid_user = "user1";
$valid_pass = "password123";

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$user = $_POST['username'] ?? '';
$pass = $_POST['password'] ?? '';
if ($user === $valid_user && $pass === $valid_pass) {
$_SESSION['logged_in'] = true;
header("Location: file_access.php");
exit;
} else {
echo "Username au password sio sahihi!";
}
}
?>
<form method="POST">
<input type="text" name="username" placeholder="Username" required>
<input type="password" name="password" placeholder="Password" required>
<button>Login</button>
</form>


2️⃣ Kufungua File (file_access.php)

<?php
session_start();
if (!isset($_SESSION['logged_in']) || $_SESSION['logged_in'] !== true) {
header("Location: login.php");
exit;
}

// Path ya file unalotaka kufungua
$file = 'documents/example.pdf';

if (file_exists($file)) {
header('Content-Type: application/pdf');
header('Content-Disposition: inline; filename="' . basename($file) . '"');
header('Content-Length: ' . filesize($file));
readfile($file);
exit;
} else {
echo "File haipo!";
}
?>


3️⃣ Logout (logout.php)

<?php
session_start();
session_unset();
session_destroy();
header("Location: login.php");
exit;
?>

🔗 Links Za Kujifunza Zaidi

🌐 Faulink Official Website:
https://www.faulink.com/

📘 Jifunze Web Design & Programming:
https://www.faulink.com/excel_mifumo.php

📲 Piga / WhatsApp kwa msaada wa haraka:
https://wa.me/255693118509