72 lines
No EOL
2.2 KiB
PHP
72 lines
No EOL
2.2 KiB
PHP
<?php
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class Database {
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private static $instance = null;
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private $pdo;
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private function __construct() {
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try {
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$this->pdo = new PDO(
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"mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=utf8mb4",
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DB_USER,
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DB_PASS,
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[
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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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]
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);
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} catch (PDOException $e) {
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die("Datenbankverbindung fehlgeschlagen: " . $e->getMessage());
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}
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}
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public static function getInstance() {
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if (self::$instance === null) {
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self::$instance = new self();
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}
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return self::$instance;
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}
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public function getConnection() {
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return $this->pdo;
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}
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// Helper-Methode für Queries
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public function query($sql, $params = []) {
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$stmt = $this->pdo->prepare($sql);
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$stmt->execute($params);
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return $stmt;
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}
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// Helper für einzelnen Datensatz
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public function fetchOne($sql, $params = []) {
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$stmt = $this->query($sql, $params);
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return $stmt->fetch();
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}
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// Helper für mehrere Datensätze
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public function fetchAll($sql, $params = []) {
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$stmt = $this->query($sql, $params);
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return $stmt->fetchAll();
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}
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// Helper für Insert/Update mit Rückgabe der ID
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public function execute($sql, $params = []) {
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$this->query($sql, $params);
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return $this->pdo->lastInsertId();
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}
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// Settings-Helper
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public function getSetting($key, $default = null) {
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$result = $this->fetchOne("SELECT setting_value FROM settings WHERE setting_key = ?", [$key]);
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return $result ? $result['setting_value'] : $default;
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}
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public function setSetting($key, $value) {
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$this->query(
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"INSERT INTO settings (setting_key, setting_value) VALUES (?, ?)
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ON DUPLICATE KEY UPDATE setting_value = VALUES(setting_value)",
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[$key, $value]
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);
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}
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} |