$pid = pcntl_fork(); //这里最好不要有其他的语句 if ($pid == -1) { die('could not fork'); } else if ($pid) { // $p[$pid] = 'ok'; //echo "we are the parent\n"; //pcntl_wait($status); //Protect against Zombie children } else { $id = posix_getpid(); echo "I am the child $id\n"; abc($i); exit(0); } print_r($p);