pcntl_sigprocmask
PHP 5 >= 5.3.0, PHP 7, PHP 8
pcntl_sigprocmask - Sets and retrieves blocked signals
Manual
pcntl_sigprocmask(
int$mode,
array$signals,
[arrayold_signals = null] ): bool
The pcntl_sigprocmask function adds, removes or sets blocked signals, depending on the mode parameter.
Parameters
- 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.
Return Values
Returns true on success or false on failure.