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@@ -4,6 +4,10 @@
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## Gemacht
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*Wir eventuell nie aktuell sein.*
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## 9-12-25 - PHP (SQL)
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- Datenbank durch PHP erstellt und Daten hinzufügen
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### 21-11-25 - PHP
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- Aufgabe von gestern Kontroliert + Kommentare hinzugefügt
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157
Zweites Jahr/aufgaben/PDO_Info.html
Executable file
157
Zweites Jahr/aufgaben/PDO_Info.html
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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>PDO SQL Schritte</title>
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<style>
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body {
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font-family: Arial, sans-serif;
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background-color: #f4f4f4;
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text-align: center;
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padding: 20px;
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}
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.container {
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display: flex;
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flex-direction: row;
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justify-content: center;
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gap: 20px;
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margin-top: 30px;
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flex-wrap: nowrap;
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}
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.step {
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background-color: white;
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padding: 20px;
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width: 170px;
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border: 2px solid #ccc;
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border-radius: 10px;
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cursor: pointer;
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transition: 0.3s;
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}
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.step:hover {
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background-color: #e5f4ff;
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}
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.info-box {
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background-color: white;
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border: 2px solid #ccc;
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border-radius: 10px;
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padding: 20px;
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width: 60%;
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margin: 40px auto 0 auto;
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display: none;
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}
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.code-snippet {
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background: #f0f0f0;
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padding: 10px;
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border-radius: 8px;
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text-align: left;
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white-space: pre-wrap;
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font-family: monospace;
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}
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</style>
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</head>
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<body>
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<h1>PDO - Grundlegende SQL-Kommandos</h1>
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<div class="container">
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<div class="step" data-step="tryCatch">
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<h2>try catch</h2>
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<p>besseres finden von Fehlern</p>
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</div>
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<div class="step" data-step="connect">
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<h2>PDO verbinden</h2>
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<p>Datenbank verbinden</p>
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</div>
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<div class="step" data-step="create">
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<h2>CREATE TABLE</h2>
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<p>Tabelle anlegen</p>
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</div>
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<div class="step" data-step="insert">
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<h2>INSERT</h2>
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<p>Daten einfügen</p>
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</div>
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<div class="step" data-step="select">
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<h2>SELECT</h2>
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<p>Daten lesen</p>
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</div>
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<div class="step" data-step="delete">
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<h2>DELETE</h2>
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<p>Daten löschen</p>
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</div>
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</div>
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<div id="info-box" class="info-box">
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<h2 id="info-title"></h2>
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<p id="info-text"></p>
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<pre id="code-snippet" class="code-snippet"></pre>
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</div>
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<script>
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const steps = {
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tryCatch: {
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title:"try{}catch{}",
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desc:"Benutze try und catch um Fehler besser erkennen zu können",
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code:`try{\n$pdo = new PDO("mysql:host=localhost;dbname=testdb","root","");\n}catch(PDOException $e){\necho $e->getMessage();\n}`
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},
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connect: {
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title: "PDO Verbindung",
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desc: "So stellst du eine einfache Verbindung zu MySQL her.",
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code: `Wenn die Datenbank bereits existiert:\n\n<?php\n\ &dollarpdo = new PDO("mysql:host=localhost;dbname=testdb", "root", "");\necho "Verbindung erfolgreich!";\n?>\n\nWenn die Datenbank noch nicht exisitert:\n\n<?php\n$pdo = new PDO("mysql:host=localhost", "root", "");\n$pdo->exec("CREATE DATABASE IF NOT EXISTS testdb");\n$pdo = new PDO("mysql:host=localhost;dbname=testdb","root","");\n?>\n?>`
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},
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create: {
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title: "CREATE TABLE",
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desc: "Eine neue Tabelle namens 'users' erstellen.",
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code: `<?php\n$sql = "CREATE TABLE users (\n id INT AUTO_INCREMENT PRIMARY KEY,\n username VARCHAR(50),\n email VARCHAR(100)\n)";\n$pdo->exec($sql);\necho "Tabelle 'users' wurde erstellt!";\n?>`
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},
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insert: {
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title: "INSERT",
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desc: "Einen Datensatz in die Tabelle einfügen.",
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code: `<?php\n$sql = "INSERT INTO person VALUES (\n 'value1'\n 'value2';\n .....\n );\n";\n$pdo->exec($sql)\n?>`
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},
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select: {
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title: "SELECT",
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desc: "Daten aus der Tabelle auslesen.",
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code: `<?php\n$sql = "SELECT * FROM users";\n$result = $pdo->query($sql);\n\n$valuesArray=$values->fetchAll();\necho"<pre>";\nprint_r($valluesArray);\necho"</pre>"; "<br>";\n}\n?>`
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},
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delete: {
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title: "DELETE",
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desc: "Ein Benutzer wird gelöscht (hier: ID = 1).",
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code: `<?php\n$sql = "DELETE FROM users WHERE id = 1";\n$pdo->exec($sql);\necho "Benutzer mit ID 1 gelöscht!";\n?>`
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}
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};
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document.querySelectorAll(".step").forEach(box => {
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box.addEventListener("click", () => {
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const key = box.dataset.step;
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document.getElementById("info-title").textContent = steps[key].title;
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document.getElementById("info-text").textContent = steps[key].desc;
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document.getElementById("code-snippet").textContent = steps[key].code;
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document.getElementById("info-box").style.display = "block";
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});
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});
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</script>
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</body>
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</html>
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25
Zweites Jahr/pdo_a2-a4_create-db.php
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25
Zweites Jahr/pdo_a2-a4_create-db.php
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<?php
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// USERNAME, password
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//$pdo = new PDO("mysql:host=localhost", "phpmyadmin", "server");
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$pdo = new PDO("mysql:host=localhost;dbname=person","phpmyadmin","server");
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$createTable= 'CREATE TABLE IF NOT EXISTS schueler(
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id INTEGER AUTO_INCREMENT PRIMARY KEY, -- zahl, wird automatisch ausgefüllt
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frstName VARCHAR(255) NOT NULL,
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lastName VARCHAR(255) NOT NULL
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);';
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$pdo->exec($createTable);
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echo 'TABELLE ERSTELLT <br>';
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$createUser ='INSERT INTO schueler VALUES(
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null, -- null da "AUTO_INCREMENT" gestzt wurde
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"Schüler Vorname",
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"Schüler Nachname"
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)';
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$pdo->exec($createUser);
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echo 'NUTZER ERSTELLT <br>';
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?>
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22
Zweites Jahr/pdo_a5.php
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22
Zweites Jahr/pdo_a5.php
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<?php
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// USERNAME, password
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//$pdo = new PDO("mysql:host=localhost", "phpmyadmin", "server");
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$pdo = new PDO("mysql:host=localhost;dbname=person","phpmyadmin","server");
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$selectAll= 'SELECT * FROM schueler;';
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$allValues = $pdo->query($selectAll);
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// $query -> gibt was aus
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// $exec -> gibt nix aus
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echo "<pre>";
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print_r($allValues->fetchAll());
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echo "</pre>";
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echo 'Alle einträge: <br>';
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foreach($allValues as $value){
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echo $value["id"]."|".$value['frstName']."|".$value['lastName']."<br>";
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}
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?>
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Reference in New Issue
Block a user