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 $signo ) : mixed
The pcntl_signal_get_handler() function will get the current handler for the specified signo.
Parameters
-
signo -
The signal number.
Return Values
This function may return an integer value that refers to SIG_DFL or SIG_IGN. If you set a custom handler a string value containing the function name is returned.
Changelog
| Version | Description |
|---|---|
| 7.1.0 | pcntl_signal_get_handler() has been added. |
Examples
Example #1 pcntl_signal_get_handler() example
<?php
var_dump(pcntl_signal_get_handler(SIGUSR1)); // Outputs: int(0)
function pcntl_test($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)
?> See Also
- pcntl_signal() - Installs a signal handler
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https://www.php.net/manual/en/function.pcntl-signal-get-handler.php