pcntl_signal_dispatch

(PHP 5 >= 5.3.0, PHP 7)

Calls signal handlers for pending signals

bool pcntl_signal_dispatch ( void )

The pcntl_signal_dispatch() function calls the signal handlers installed by pcntl_signal() for each pending signal.

Returns:

Returns TRUE on success or FALSE on failure.

Examples:

pcntl_signal_dispatch() example

<?php
echo "Installing signal handler...\n";
pcntl_signal(SIGHUP,  function($signo) {
     echo "signal handler called\n";
});
 
echo "Generating signal SIGHUP to self...\n";
posix_kill(posix_getpid(), SIGHUP);
 
echo "Dispatching...\n";
pcntl_signal_dispatch();
 
echo "Done\n";
 
?>

The above example will output something similar to:

Installing signal handler...
Generating signal SIGHUP to self...
Dispatching...
signal handler called
Done