(PHP 4 >= 4.1.0, PHP 5, PHP 7)
pcntl_wtermsig — Returns the signal which caused the child to terminate
pcntl_wtermsig ( int $status ) : int
Returns the number of the signal that caused the child process to terminate. This function is only useful if pcntl_wifsignaled() returned true
.
status
The status
parameter is the status parameter supplied to a successful call to pcntl_waitpid().
Returns the signal number, as an integer.
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https://www.php.net/manual/en/function.pcntl-wtermsig.php