(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
pcntl_wifexited — Checks if status code represents a normal exit
$status): boolChecks whether the child status code represents a normal exit.
statusThe status
parameter is the status parameter supplied to a successful
call to pcntl_waitpid().
Returns true if the child status code represents a normal exit, false
otherwise.