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59
php-project/src/db-test.php
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59
php-project/src/db-test.php
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<?php
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$host = getenv('DB_HOST') ?: 'mysql-db';
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$user = getenv('DB_USER') ?: 'root';
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$pass = getenv('DB_PASSWORD') ?: 'secret';
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$dbname = getenv('DB_NAME') ?: 'testdb';
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echo "<h1>Datenbank-Verbindungstest</h1>";
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echo "<p>Verbindungsversuch zu: $host</p>";
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try {
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// Verbindung erstellen
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$conn = new PDO("mysql:host=$host;dbname=$dbname", $user, $pass);
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// PDO-Fehlerbehandlung aktivieren
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$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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echo "<div style='color:green;'>Verbindung erfolgreich!</div>";
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// Prüfen, ob Testtabelle existiert, sonst erstellen
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$stmt = $conn->query("SHOW TABLES LIKE 'test_table'");
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if ($stmt->rowCount() == 0) {
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$conn->exec("CREATE TABLE test_table (
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id INT AUTO_INCREMENT PRIMARY KEY,
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message VARCHAR(255),
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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)");
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$conn->exec("INSERT INTO test_table (message) VALUES ('Testdaten 1')");
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$conn->exec("INSERT INTO test_table (message) VALUES ('Testdaten 2')");
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echo "<p>Testtabelle erstellt und mit Daten gefüllt.</p>";
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}
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// Daten auslesen
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$stmt = $conn->query("SELECT * FROM test_table");
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$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
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echo "<h2>Daten aus der Datenbank:</h2>";
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echo "<table border='1'>";
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echo "<tr><th>ID</th><th>Nachricht</th><th>Erstellt am</th></tr>";
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foreach ($rows as $row) {
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echo "<tr>";
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echo "<td>" . $row['id'] . "</td>";
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echo "<td>" . $row['message'] . "</td>";
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echo "<td>" . $row['created_at'] . "</td>";
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echo "</tr>";
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}
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echo "</table>";
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} catch(PDOException $e) {
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echo "<div style='color:red;'>Verbindungsfehler: " . $e->getMessage() . "</div>";
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}
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// Verbindung schließen
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$conn = null;
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?>
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<p>Seite geladen um: <?php echo date('H:i:s'); ?></p>
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<p><a href="index.php">Zurück zur Startseite</a></p>
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