add: read, write data to database + some explainations

Zweites Jahr/unterrichts_projekt/inc/db_connection_data.php

@@ -0,0 +1,9 @@
+<?php
+// db_connection_data.php 
+
+
+$db_engine ="mysql";
+$db_name = "E2FI1_2025";
+$db_host = "localhost";
+$db_user = "phpmyadmin";
+$db_password = "server";

Zweites Jahr/unterrichts_projekt/inc/db_connection_function.php

@@ -0,0 +1,20 @@
+<?php
+// db_connection_function.php
+
+function db_connect(){
+    require_once("db_connection_data.php");
+    // db_server = "mysql:dbname=testdb;host:localhost";
+    $db_server = "$db_engine:dbname=$db_name;host=$db_host";
+    try {
+        $dbh = new PDO ($db_server, $db_user, $db_password);
+        echo "<p>DB Connection succesfull established!</p>";
+        return $dbh;
+    } catch (PDOException $e){
+        //echo "Could not connect to DB!<br> ";
+        die("More:".$e->getMessage());
+    }
+}
+
+
+// Test:
+// db_connect();