47 lines
1.5 KiB
PHP
47 lines
1.5 KiB
PHP
<?php
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// db/config.php
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// --- Database Credentials ---
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// Note: In a real application, these should be in a .env file or other secure storage.
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define('DB_HOST', '127.0.0.1');
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define('DB_NAME', 'lamp_app');
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define('DB_USER', 'lamp_user');
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define('DB_PASS', 'lamp_password');
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/**
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* PDO Database Connection Helper
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*
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* Establishes a persistent PDO connection or returns the existing one.
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*
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* @return PDO|null Returns a PDO instance on success or null on failure.
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*/
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function db(): ?PDO
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{
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static $pdo = null;
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if ($pdo !== null) {
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return $pdo;
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}
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$dsn = sprintf('mysql:host=%s;dbname=%s;charset=utf8mb4', DB_HOST, DB_NAME);
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$options = [
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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PDO::ATTR_EMULATE_PREPARES => false,
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PDO::ATTR_PERSISTENT => true, // Use persistent connection
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];
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try {
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// Create a new database if it doesn't exist
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$tempPdo = new PDO(sprintf('mysql:host=%s;charset=utf8mb4', DB_HOST), DB_USER, DB_PASS, $options);
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$tempPdo->exec("CREATE DATABASE IF NOT EXISTS " . DB_NAME);
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// Now connect to the specific database
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$pdo = new PDO($dsn, DB_USER, DB_PASS, $options);
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return $pdo;
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} catch (PDOException $e) {
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// In a real app, you'd log this error. For this demo, we'll just fail silently.
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// error_log('Database Connection Error: ' . $e->getMessage());
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return null;
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}
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} |