Why Am I Seeing Duplicate Entries After Refreshing the Game Page?

Unexpected Insertion Duplication Upon Page Load

Consider the situation on a game-themed webpage where users engage in various games. To maintain a record of user activity, a query is implemented:

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

This query is intended to insert a new row into the "game_activity" table each time a user launches a game. However, users have encountered an issue where refreshing the game page results in duplicate insertions in the database.

Analysis and Resolution

The unexpected behavior stems from a flawed front controller logic. The page executing the query is invoked during every request made to the website, regardless of its validity. This means that if users refresh the game page or navigate to a nonexistent resource, the query will still be executed, leading to unnecessary insertions.

To remedy this issue, the front controller's logic must be modified. It should only execute the application for valid requests, excluding invalid requests. By addressing this flaw, the site will avoid numerous false insertions when it goes live.

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