(PHP 5 >= 5.3.0, PHP 7, PHP 8)
pcntl_sigprocmask — Sets and retrieves blocked signals
The pcntl_sigprocmask() function adds, removes or sets blocked signals, depending on the mode
parameter.
mode
Sets the behavior of pcntl_sigprocmask(). Possible values:
SIG_BLOCK
: Add the signals to the currently blocked signals.SIG_UNBLOCK
: Remove the signals from the currently blocked signals.SIG_SETMASK
: Replace the currently blocked signals by the given list of signals.signals
List of signals.
old_signals
The old_signals
parameter is set to an array containing the list of the previously blocked signals.
Example #1 pcntl_sigprocmask() example
<?php
pcntl_sigprocmask(SIG_BLOCK, array(SIGHUP));
$oldset = array();
pcntl_sigprocmask(SIG_UNBLOCK, array(SIGHUP), $oldset);
?>