Shutdown Function

The shutdown function is a PHP custom function which is called when the application is shutting down. This is after a call to exit(), die() or the natural end of life of the script.

Multiple functions may be registered with the register_shutdown_function() function. They will be called in order of registration.

Shutdown function acts as destructors: they should clean up any unfinished jobs, and gracefully free resources, such as closing files with their correct endings, or gracefully closing connections.

<?php

    // extract from the PHP manual
    function shutdown()
    {
        // This is our shutdown function, in
        // here we can do any last operations
        // before the script is complete.

        echo 'Script executed with success', PHP_EOL;
    }

    register_shutdown_function('shutdown');

?>

Documentation

See also A Practical Guide to PHP’s `register_shutdown_function() Function <https://reintech.io/blog/a-practical-guide-to-php-register_shutdown_function>`_.

Related : PHP Handlers, Exit