Debugging Duplicate Inserts on Page Load

On a gaming webpage, a user activity query was observed to insert duplicate records into the database upon page refresh.

$insert_user_activity = mysql_query("INSERT INTO game_activity (user_id,user_full_name,game_id,game_name) values ('$user_id','$full_name','$browser_id','$game_title')");

Analysis

The culprit behind this issue lies in the front controller's logic. The page containing the query is erroneously invoked during all requests, including invalid ones (e.g., non-existent resources). This behavior leads to the execution of the query multiple times, resulting in duplicate inserts.

Solution

To remedy the issue, modify the front controller's logic. Prevent it from executing the application for invalid requests. This modification will eliminate the false inserts that could otherwise plague the database upon the website's launch.