register_shutdown_function

register_shutdown_function

Register a function for execution on shutdown

void **register_shutdown_function** callable $callback mixed $args

Registers a to be executed after script execution finishes or is called. callback``exit

Multiple calls to can be made, and each will be called in the same order as they were registered. If you call within one registered shutdown function, processing will stop completely and no other registered shutdown functions will be called. register_shutdown_function``exit

Shutdown functions may also call themselves to add a shutdown function to the end of the queue. register_shutdown_function

callbackThe shutdown callback to register.

The shutdown callbacks are executed as the part of the request, so it's possible to send output from them and access output buffers.

argsIt is possible to pass parameters to the shutdown function by passing additional parameters.

return.void

Voorbeeld: example

<?php
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');
?>

Opmerking: > The working directory of the script can change inside the shutdown function under some web servers, e.g. Apache.

Opmerking: > Shutdown functions will not be executed if the process is killed with a SIGTERM or SIGKILL signal. While you cannot intercept a SIGKILL, you can use to install a handler for a SIGTERM which uses to end cleanly. pcntl_signal``exit

Opmerking: > Shutdown functions run separately from the time tracked by . That means even if a process is terminated for running too long, shutdown functions will still be called. Additionally, if the runs out while a shutdown function is running it will not be terminated. max_execution_timemax_execution_time

auto_append_fileexit``fastcgi_finish_requestconnection handling