Update 07-03-01-Databases_PDO.md

http://php.net/manual/en/function.filter-input.php

_posts/07-03-01-Databases_PDO.md

@@ -50,7 +50,7 @@ FROM users` which will delete all of your users! Instead, you should sanitize th
 <?php
 $pdo = new PDO('sqlite:/path/db/users.db');
 $stmt = $pdo->prepare('SELECT name FROM users WHERE id = :id');
-$id = filter_input(FILTER_GET, 'id', FILTER_SANITIZE_NUMBER_INT); // <-- filter your data first (see [Data Filtering](#data_filtering)), especially important for INSERT, UPDATE, etc.
+$id = filter_input(INPUT_GET, 'id', FILTER_SANITIZE_NUMBER_INT); // <-- filter your data first (see [Data Filtering](#data_filtering)), especially important for INSERT, UPDATE, etc.
 $stmt->bindParam(':id', $id, PDO::PARAM_INT); // <-- Automatically sanitized for SQL by PDO
 $stmt->execute();
 {% endhighlight %}