pcntl_signal_get_handler

(PHP 7 >= 7.1.0)

pcntl_signal_get_handler — Get the current handler for specified signal

Description

pcntl_signal_get_handler ( int $signo ) : mixed

The pcntl_signal_get_handler() function will get the current handler for the specified signo.

Liste de paramètres

signo

The signal number.

Valeurs de retour

This function may return an integer value that refers to SIG_DFL or SIG_IGN. If you set a custom handler a string value containing the function name is returned.

Historique

Version Description
7.1.0 pcntl_signal_get_handler() has been added.

Exemples

Exemple #1 pcntl_signal_get_handler() example

<?php
var_dump(pcntl_signal_get_handler(SIGUSR1)); // Outputs: int(0)

function pcntl_test($signo) {}
pcntl_signal(SIGUSR1, 'pcntl_test');
var_dump(pcntl_signal_get_handler(SIGUSR1)); // Outputs: string(10) "pcntl_test"

pcntl_signal(SIGUSR1, SIG_DFL);
var_dump(pcntl_signal_get_handler(SIGUSR1)); // Outputs: int(0)

pcntl_signal(SIGUSR1, SIG_IGN);
var_dump(pcntl_signal_get_handler(SIGUSR1)); // Outputs: int(1)
?>

Voir aussi