What is the significance of the "user_abort" function in PHP scripts?

The "user_abort" function in PHP scripts is significant because it allows the script to detect when the user has aborted the connection, such as by closing the browser window. This can be useful for cleaning up resources or logging actions before the script exits prematurely. To implement this functionality, you can use the "connection_aborted" function in conjunction with the "register_shutdown_function" to handle cleanup tasks when the user aborts the script.

// Check if the connection has been aborted by the user
if (connection_aborted()) {
    // Perform cleanup tasks or log actions before exiting
    // For example, close database connections or write to a log file
}

// Register a shutdown function to handle cleanup tasks even if the script exits normally
register_shutdown_function(function() {
    // Perform final cleanup tasks here
    // This function will be called regardless of how the script exits
});