pcntl_sigprocmask

Function • Params and return types changed in PHP 8.0

Sets and retrieves blocked signals.

PHP 5

PHP 7

Improved

PHP 8.1

PHP 8.2-8.3

PHP 8.4

PHP 8.5

PHP 8.6

pcntl_sigprocmask(
    int $mode,
    array $signals,
    &$old_signals = null
  ): bool

Typeint

Sets the behavior of pcntl_sigprocmask. Possible values:

Typearray

List of signals.

Passed by reference, OptionalDefault valuenull

The $old_signals parameter is set to an array containing the list of the previously blocked signals.

Note that the parameter $old_signals is passed by reference, and contains additional/updated context data that may be useful.

Typebool

Returns true on success, false on failure

Changes to the `pcntl_sigprocmask` Function

  pcntl_sigprocmask(
-     $how,
+     int $mode,
-     $set,
+     array $signals,
-     &$oldset
+     &$old_signals = null
-   )
+   ): bool