PHP multi-process simple instance program

Multi-process can be said that php is much worse than java in this regard. it is fun to find a PHP multi-process instance. let's take a look at it. the instance code is as follows: & lt ;? Php $ cmdsarray (a, B, c, d

Multi-process can be said that php is much worse than java in this regard. it is fun to find a PHP multi-process instance. let's take a look at it. the instance code is as follows:

2. $ Cmds = array (a, B, c, d );
3. Foreach ($ cmds as $ cmd ){
4. $ Pid = pcntl_fork ();
5. If ($ pid =-1 ){
6. Exit ("pid fork error ");
7. }
8. If ($ pid) {// master process segment to control the number of sub-processes
9. Static $ max = 0;
10. $ Max ++;
11. If ($ max> = 5 ){
12. Pcntl_wait ($ status); // blocks the parent process until the child process ends.
13. $ Max --;
14. }
15. } Else {// sub-process execution command
16. $ Pid = posix_getpid ();
17. Echo "$ pid ---- $ neural NN ";
18. Exit (0 );
19. }
20. }
21. ?>