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');
?>