init adapted to server

init.php

@@ -1,6 +1,6 @@
 <?php
 
-// Reads .env File
+// Reads Environment Configfile
 $envFile = __DIR__ . '/.env';
 if (file_exists($envFile)) {
     $lines = file($envFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
@@ -11,28 +11,30 @@ if (file_exists($envFile)) {
     }
 }
 
+// Defines Environment Variables
 $host = getenv('POSTGRES_HOST');
 $port = getenv('POSTGRES_PORT');
 $db   = getenv('POSTGRES_DB');
 $user = getenv('POSTGRES_USER');
 $pass = getenv('POSTGRES_PASSWORD');
 
+// Output Buffering and Session Start
 ob_start();
 session_start();
 
+// Initializes Database Connection
 try {
-
     $opt = [
         PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
         PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
         PDO::ATTR_EMULATE_PREPARES   => false
     ];
-
     $dsn = "pgsql:host=$host;dbname=$db;port=$port";
     $pdo = new PDO($dsn, $user, $pass, $opt);
     
-    // Error-Message
+// Creates Error Message
 } catch(PDOException $e) {
     echo "Error: ".$e->getMessage();
 }
+
 ?>