您可以使用一个循环，并在后台启动过程与＆安培; ：

You can use a loop and start the processes in the background with &:

for (( i=0; i<40; i++ )); do
   php /home/calculatedata.php &
done

如果这些进程是你已经运行PHP的唯一实例，并要杀死他们，最简单的方法是的 killall ：

If these processes are the only instances of PHP you have running and you want to kill them all, the easiest way is killall:

killall php