PCNTL Multi-process

code

!--? Php$archildid = Array (), for ($i = 0; $i; $i + +) {$iPid = Pcntl_fork (); if ($iP id = =-1) {Die (& #39, can\& #39; t be forked.& #39;);} if ($iPid) {# main process logic $arChildId [] = $iPid;}  else {# child process logic $iPid = Posix_getpid ();    # Gets the ID of the child process $iSeconds = rand (5, 30); Echo & #39; * Process & #39;. $iPid. & #39; was created, and Executed, and Sleep & #39;. $iSeconds.    Php_eol;    Excuteprocess ($iPid, $iSeconds); Exit ();}}    while (count ($arChildId)--> 0) {foreach ($arChildId as $iKey = = $iPid) {$res = Pcntl_waitpid ($iPid, $status, Wnohang);        if ($res = =-1 | | $res > 0) {unset ($arChildId [$iKey]); Echo ' * Sub process: '. $iPid. ' Exited with '. $status.    Php_eol; The logical function excuteprocess ($iPid, $iSeconds) {file_put_contents ('./log/'. $iPid.}}}#) Execution of the child process. Log ', $iPid. Php_eol, File_append); sleep ($iSeconds);}? 

run result

* Process 16163 was created, and Executed, and sleep 11* process 16164 was created, and Executed, and sleep 21* process 16 165 was created, and Executed, and sleep 24* process 16166 is created, and Executed, and sleep 27* Process 16167 was Crea Ted, and Executed, and sleep 8* process 16168 is created, and Executed, and sleep 14* Process 16169 was created, and Exec Uted, and sleep 14* process 16170 was created, and Executed, and sleep 26* process 16171 is created, and Executed, and Sl  Eep 20* Process 16172 was created, and Executed, and Sleep 21* Sub process:16167 exited with 0* Sub process:16163 exited With 0* Sub process:16169 exited with 0* Sub process:16168 exited with 0* Sub process:16171 exited with 0* sub process : 16164 exited with 0* Sub process:16172 exited with 0* Sub process:16165 exited with 0* sub process:16170 exited with 0* Sub process:16166 exited with 0

