Merge pull request #486 from peterkokot/patch-2

added missing starting php tag

_posts/07-01-01-Databases.md

@@ -32,6 +32,7 @@ rushed later on.
 many different databases. For example, you can use basically identical code to interface with MySQL or SQLite:
 
 {% highlight php %}
+<?php
 // PDO + MySQL
 $pdo = new PDO('mysql:host=example.com;dbname=database', 'user', 'password');
 $statement = $pdo->query("SELECT some\_field FROM some\_table");