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18
00_uebungs-files/01_docker-basics-php/Dockerfile
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18
00_uebungs-files/01_docker-basics-php/Dockerfile
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FROM php:8.1-cli
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# GD Extension installieren
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RUN apt-get update && apt-get install -y \
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libfreetype6-dev \
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libjpeg62-turbo-dev \
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libpng-dev \
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&& docker-php-ext-configure gd --with-freetype --with-jpeg \
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&& docker-php-ext-install -j$(nproc) gd
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# PDO MySQL Extension installieren
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RUN docker-php-ext-install pdo pdo_mysql
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WORKDIR /app
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COPY ./src .
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# Entwicklungsserver starten
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CMD ["php", "-S", "0.0.0.0:8000"]
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34
00_uebungs-files/01_docker-basics-php/docker-compose.yml
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34
00_uebungs-files/01_docker-basics-php/docker-compose.yml
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version: '3'
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services:
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php-app:
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build: .
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ports:
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- "8000:8000"
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volumes:
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- ./src:/app
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environment:
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DB_HOST: mysql-db
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DB_USER: root
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DB_PASSWORD: secret
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DB_NAME: testdb
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depends_on:
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- mysql-db
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networks:
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- app-network
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mysql-db:
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image: mysql:8.0
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environment:
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MYSQL_ROOT_PASSWORD: secret
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MYSQL_DATABASE: testdb
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volumes:
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- db-data:/var/lib/mysql
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networks:
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- app-network
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networks:
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app-network:
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volumes:
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db-data:
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59
00_uebungs-files/01_docker-basics-php/src/db-test.php
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59
00_uebungs-files/01_docker-basics-php/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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29
00_uebungs-files/01_docker-basics-php/src/image-test.php
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29
00_uebungs-files/01_docker-basics-php/src/image-test.php
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<?php
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// Test für GD Extension
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header('Content-Type: image/png');
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// Canvas erstellen (300x200px)
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$image = imagecreatetruecolor(300, 200);
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// Farben definieren
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$background = imagecolorallocate($image, 0, 153, 204);
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$text_color = imagecolorallocate($image, 255, 255, 255);
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$border_color = imagecolorallocate($image, 0, 0, 0);
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// Hintergrund füllen
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imagefill($image, 0, 0, $background);
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// Rahmen zeichnen
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imagerectangle($image, 0, 0, 299, 199, $border_color);
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// Text schreiben
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$text = "GD funktioniert!";
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imagestring($image, 5, 60, 80, $text, $text_color);
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// Zeit anzeigen
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$time = date('H:i:s');
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imagestring($image, 3, 100, 120, "Zeit: $time", $text_color);
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// Bild ausgeben
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imagepng($image);
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imagedestroy($image);
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22
00_uebungs-files/01_docker-basics-php/src/index.php
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22
00_uebungs-files/01_docker-basics-php/src/index.php
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<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>PHP Docker Demo</title>
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</head>
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<body>
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<h1>PHP Docker Demo</h1>
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<h2>PHP Info</h2>
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<p>PHP Version: <?php echo phpversion(); ?></p>
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<h2>Tests</h2>
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<ul>
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<li><a href="image-test.php">GD Image Test</a> (benötigt GD Extension)</li>
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<li><a href="db-test.php">Datenbank-Test</a> (benötigt MySQL/MariaDB Verbindung)</li>
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</ul>
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<p>Diese Datei wurde geladen um: <?php echo date('H:i:s'); ?></p>
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</body>
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</html>
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