(PHP 5 >= 5.3.0, PHP 7)
Sets and retrieves blocked signals
bool pcntl_sigprocmask ( int $how, array $set [, array &$oldset ] )
The pcntl_sigprocmask() function adds, removes or sets blocked signals, depending on the how
parameter.
Parameters:
how
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.
set
List of signals.
oldset
The oldset
parameter is set to an array containing the list of the previously blocked signals.
Returns:
Returns TRUE
on success or FALSE
on failure.
Examples:
pcntl_sigprocmask() example
<?php pcntl_sigprocmask(SIG_BLOCK, array(SIGHUP)); $oldset = array(); pcntl_sigprocmask(SIG_UNBLOCK, array(SIGHUP), $oldset); ?>
See also:
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