$pid = pcntl_fork(); if ($pid == -1) { die("ERROR"); } else if ($pid == 0) { head($argv[2]); exit(0); } else { $pids[] = $pid; } } foreach ($pids as $pid) { pcntl_waitpid($pid, $status); } }
else if ($pid == 0) { head($argv[2]); if ($pid == 0) head($argv[1]); exit(0);