<?php
/**
* Fix Connection Variable in Header
*
* This script checks if the admin/includes/header.php file properly includes
* the database connection and fixes the "Undefined variable $conn" error.
*
* Run this script if you encounter:
* "Warning: Undefined variable $conn in C:\xampp\htdocs\admin\includes\header.php"
*/
// Include database configuration
require_once '../../admin/database/db_config.php';
// Display header
echo "<!DOCTYPE html>
<html>
<head>
<title>Database Maintenance - Fix Connection Variable</title>
<style>
body { font-family: Arial, sans-serif; line-height: 1.6; margin: 20px; color: #333; }
h1 { color: #2c3e50; border-bottom: 2px solid #eee; padding-bottom: 10px; }
h2 { color: #3498db; margin-top: 20px; }
.container { max-width: 800px; margin: 0 auto; background: #f9f9f9; padding: 20px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.success { color: #27ae60; background-color: #d5f5e3; padding: 10px; border-radius: 4px; margin-bottom: 10px; }
.error { color: #c0392b; background-color: #f8d7da; padding: 10px; border-radius: 4px; margin-bottom: 10px; }
.info { color: #2980b9; background-color: #d6eaf8; padding: 10px; border-radius: 4px; margin-bottom: 10px; }
.warning { color: #f39c12; background-color: #fef9e7; padding: 10px; border-radius: 4px; margin-bottom: 10px; }
table { width: 100%; border-collapse: collapse; margin: 20px 0; }
table, th, td { border: 1px solid #ddd; }
th, td { padding: 12px; text-align: left; }
th { background-color: #f2f2f2; }
a { color: #3498db; text-decoration: none; }
a:hover { text-decoration: underline; }
.btn { display: inline-block; background: #3498db; color: white; padding: 8px 16px; border-radius: 4px; text-decoration: none; margin-top: 15px; }
.btn:hover { background: #2980b9; text-decoration: none; }
pre { background: #f8f8f8; padding: 10px; border-radius: 4px; overflow-x: auto; }
code { font-family: monospace; font-size: 14px; }
.diff-highlight { background-color: #fff59d; }
</style>
</head>
<body>
<div class='container'>
<h1>Fix Connection Variable in Header</h1>
<p>This script checks and fixes the undefined \$conn variable error in header.php files.</p>";
try {
// Check for admin header file
$admin_header_path = '../../admin/includes/header.php';
$public_header_path = '../../includes/header.php';
$db_config_path = '../../admin/database/db_config.php';
echo "<h2>Checking File Existence:</h2>";
echo "<table>
<tr>
<th>File</th>
<th>Status</th>
</tr>
<tr>
<td>Admin Header</td>
<td>" . (file_exists($admin_header_path) ? "<span class='info'>Found</span>" : "<span class='warning'>Not Found</span>") . "</td>
</tr>
<tr>
<td>Public Header</td>
<td>" . (file_exists($public_header_path) ? "<span class='info'>Found</span>" : "<span class='warning'>Not Found</span>") . "</td>
</tr>
<tr>
<td>Database Config</td>
<td>" . (file_exists($db_config_path) ? "<span class='info'>Found</span>" : "<span class='error'>Not Found - Critical</span>") . "</td>
</tr>
</table>";
// Check and fix admin header file
if (file_exists($admin_header_path)) {
$header_content = file_get_contents($admin_header_path);
// Check if the file already includes the database config
$has_db_include = (strpos($header_content, 'require_once') !== false &&
(strpos($header_content, 'db_config.php') !== false ||
strpos($header_content, 'database/db_config.php') !== false));
echo "<h2>Admin Header File Analysis:</h2>";
echo "<table>
<tr>
<th>Check</th>
<th>Status</th>
</tr>
<tr>
<td>Database config include/require</td>
<td>" . ($has_db_include ? "<span class='info'>Found</span>" : "<span class='warning'>Missing</span>") . "</td>
</tr>
<tr>
<td>\$conn variable checks/protection</td>
<td>" . (strpos($header_content, 'isset($conn)') !== false ? "<span class='info'>Found</span>" : "<span class='warning'>Missing</span>") . "</td>
</tr>
</table>";
// If database include is missing, add it at the top of the file
if (!$has_db_include) {
// Create backup of original file
$backup_path = $admin_header_path . '.bak.' . date('Ymd_His');
if (copy($admin_header_path, $backup_path)) {
echo "<div class='info'>Created backup of admin header file: " . basename($backup_path) . "</div>";
// Add include statement at the top after opening PHP tag
$modified_content = preg_replace(
'/^<\?php/',
'<?php
// Include database configuration
require_once __DIR__ . "/../database/db_config.php";
// Make sure we have a database connection
if (!isset($conn) || !($conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . "/../database/db_config.php";
}',
$header_content
);
// Write modified content back to file
if (file_put_contents($admin_header_path, $modified_content)) {
echo "<div class='success'>✅ Successfully updated admin header file with database connection include!</div>";
echo "<h2>Changes Made:</h2>";
echo "<pre><code><span class='diff-highlight'>// Include database configuration
require_once __DIR__ . \"/../database/db_config.php\";
// Make sure we have a database connection
if (!isset(\$conn) || !(\$conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . \"/../database/db_config.php\";
}</span></code></pre>";
} else {
echo "<div class='error'>❌ Failed to write modified content to admin header file. Please check file permissions.</div>";
}
} else {
echo "<div class='error'>❌ Failed to create backup of admin header file. Please check file permissions.</div>";
}
} else {
// If the inclusion is already there but no check for $conn variable, add the check
if (strpos($header_content, 'isset($conn)') === false) {
// Create backup of original file
$backup_path = $admin_header_path . '.bak.' . date('Ymd_His');
if (copy($admin_header_path, $backup_path)) {
echo "<div class='info'>Created backup of admin header file: " . basename($backup_path) . "</div>";
// Add check after existing include statement
$pattern = '/(require|include)(_once)?\s+[\'"].*db_config\.php[\'"]\s*;/';
$replacement = '$0' . "\n\n" . '// Make sure we have a database connection
if (!isset($conn) || !($conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . "/../database/db_config.php";
}';
$modified_content = preg_replace($pattern, $replacement, $header_content);
// Write modified content back to file
if (file_put_contents($admin_header_path, $modified_content)) {
echo "<div class='success'>✅ Successfully added \$conn variable check to admin header file!</div>";
echo "<h2>Changes Made:</h2>";
echo "<pre><code><span class='diff-highlight'>// Make sure we have a database connection
if (!isset(\$conn) || !(\$conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . \"/../database/db_config.php\";
}</span></code></pre>";
} else {
echo "<div class='error'>❌ Failed to write modified content to admin header file. Please check file permissions.</div>";
}
} else {
echo "<div class='error'>❌ Failed to create backup of admin header file. Please check file permissions.</div>";
}
} else {
echo "<div class='success'>✅ Admin header file already has proper database connection and variable checks. No changes needed.</div>";
}
}
} else {
echo "<div class='error'>❌ Could not find admin header file. Manual intervention required.</div>";
}
// Also check public header file if it exists
if (file_exists($public_header_path)) {
$header_content = file_get_contents($public_header_path);
// Check if the file already includes the database config
$has_db_include = (strpos($header_content, 'require_once') !== false &&
(strpos($header_content, 'db_config.php') !== false ||
strpos($header_content, 'database/db_config.php') !== false));
echo "<h2>Public Header File Analysis:</h2>";
echo "<table>
<tr>
<th>Check</th>
<th>Status</th>
</tr>
<tr>
<td>Database config include/require</td>
<td>" . ($has_db_include ? "<span class='info'>Found</span>" : "<span class='warning'>Missing</span>") . "</td>
</tr>
<tr>
<td>\$conn variable checks/protection</td>
<td>" . (strpos($header_content, 'isset($conn)') !== false ? "<span class='info'>Found</span>" : "<span class='warning'>Missing</span>") . "</td>
</tr>
</table>";
// If database include is missing, add it at the top of the file
if (!$has_db_include) {
// Create backup of original file
$backup_path = $public_header_path . '.bak.' . date('Ymd_His');
if (copy($public_header_path, $backup_path)) {
echo "<div class='info'>Created backup of public header file: " . basename($backup_path) . "</div>";
// Add include statement at the top after opening PHP tag
$modified_content = preg_replace(
'/^<\?php/',
'<?php
// Include database configuration
require_once __DIR__ . "/../admin/database/db_config.php";
// Make sure we have a database connection
if (!isset($conn) || !($conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . "/../admin/database/db_config.php";
}',
$header_content
);
// Write modified content back to file
if (file_put_contents($public_header_path, $modified_content)) {
echo "<div class='success'>✅ Successfully updated public header file with database connection include!</div>";
echo "<h2>Changes Made to Public Header:</h2>";
echo "<pre><code><span class='diff-highlight'>// Include database configuration
require_once __DIR__ . \"/../admin/database/db_config.php\";
// Make sure we have a database connection
if (!isset(\$conn) || !(\$conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . \"/../admin/database/db_config.php\";
}</span></code></pre>";
} else {
echo "<div class='error'>❌ Failed to write modified content to public header file. Please check file permissions.</div>";
}
} else {
echo "<div class='error'>❌ Failed to create backup of public header file. Please check file permissions.</div>";
}
} else {
// If the inclusion is already there but no check for $conn variable, add the check
if (strpos($header_content, 'isset($conn)') === false) {
// Create backup of original file
$backup_path = $public_header_path . '.bak.' . date('Ymd_His');
if (copy($public_header_path, $backup_path)) {
echo "<div class='info'>Created backup of public header file: " . basename($backup_path) . "</div>";
// Add check after existing include statement
$pattern = '/(require|include)(_once)?\s+[\'"].*db_config\.php[\'"]\s*;/';
$replacement = '$0' . "\n\n" . '// Make sure we have a database connection
if (!isset($conn) || !($conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . "/../admin/database/db_config.php";
}';
$modified_content = preg_replace($pattern, $replacement, $header_content);
// Write modified content back to file
if (file_put_contents($public_header_path, $modified_content)) {
echo "<div class='success'>✅ Successfully added \$conn variable check to public header file!</div>";
echo "<h2>Changes Made to Public Header:</h2>";
echo "<pre><code><span class='diff-highlight'>// Make sure we have a database connection
if (!isset(\$conn) || !(\$conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . \"/../admin/database/db_config.php\";
}</span></code></pre>";
} else {
echo "<div class='error'>❌ Failed to write modified content to public header file. Please check file permissions.</div>";
}
} else {
echo "<div class='error'>❌ Failed to create backup of public header file. Please check file permissions.</div>";
}
} else {
echo "<div class='success'>✅ Public header file already has proper database connection and variable checks. No changes needed.</div>";
}
}
} else {
echo "<div class='warning'>⚠️ Could not find public header file. No changes made to it.</div>";
}
// Display manual instructions as a fallback
echo "<h2>Manual Fix Instructions:</h2>";
echo "<p>If the automatic fix doesn't work, you can manually add the following code at the top of your header.php files:</p>";
echo "<pre><code>// Include database configuration
require_once __DIR__ . \"/../database/db_config.php\"; // For admin/includes/header.php
// OR
require_once __DIR__ . \"/../admin/database/db_config.php\"; // For includes/header.php
// Make sure we have a database connection
if (!isset(\$conn) || !(\$conn instanceof mysqli)) {
// Attempt to reconnect or initialize connection
require_once __DIR__ . \"/../database/db_config.php\"; // Adjust path as needed
}</code></pre>";
echo "<div class='links'>
<a href='../../index.php' class='btn'>Return to Homepage</a>
<a href='../../admin/index.php' class='btn'>Admin Dashboard</a>
<a href='../index.php' class='btn'>Debug Tools</a>
</div>";
} catch (Exception $e) {
echo "<div class='error'>Error: " . $e->getMessage() . "</div>";
echo "<div class='links'>
<a href='../../index.php' class='btn'>Return to Homepage</a>
<a href='../../admin/index.php' class='btn'>Admin Dashboard</a>
<a href='../index.php' class='btn'>Debug Tools</a>
</div>";
}
echo "</div></body></html>";
?>
