PHP's register_shutdown_function() using an anonymous function

Question

According to the manual http://php.net/manual/en/function.register-shutdown-function.php, register_shutdown_function() is implemented as:

<?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');
?>

Could it be implemented as an anonymous function? If so, how?

dynamic · Accepted Answer · 2014-11-09 14:19:11Z

5

Anonymous function are simply passed as an argument:

register_shutdown_function(function(){
    // Code
});

Note that this applies to every function, not only to register_shutdown_function();

The only differences between using a named function vs an anonymous one, is if you need to call this function outside the context of register_shutdown_function, at this point you need to use a named function (altho this is a rare edge case).

edited Nov 9, 2014 at 14:19

answered Nov 9, 2014 at 14:06

dynamic

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2 Comments

user1032531 Over a year ago

Thanks dynamic. Easier than I expected! Any reason not to do so?

wlf Over a year ago

can anyone elaborate on "outside the context of register_shutdown_function" with an example?

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