What potential issues may arise if a user closes the window before the specified time limit for displaying a database entry?

If a user closes the window before the specified time limit for displaying a database entry, the database entry may remain displayed indefinitely, potentially causing confusion or inaccuracies. To solve this issue, you can implement a mechanism to track the time when the entry was displayed and automatically remove it after the specified time limit has elapsed. 

// Check if the entry has exceeded the time limit for display
if (strtotime($entry['displayed_at']) + $time_limit < time()) {
    // Remove the entry from the database
    $query = "DELETE FROM entries WHERE id = :entry_id";
    $stmt = $pdo->prepare($query);
    $stmt->execute(['entry_id' => $entry['id']]);
}

Keywords

session timeout database entry PHP error handling window close

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