php教程之多进程实例(3)

<?php
//PHP多进程实例
date_default_timezone_set( 'Asia/Chongqing'); 
$tasks = array( 
     'http://localhost/feedbowl/t2.php?job=task1', 
     'http://localhost/feedbowl/t2.php?job=task2', 
     'http://localhost/feedbowl/t2.php?job=task3' 
); 
$mh = curl_multi_init(); 
foreach ($tasks as $i => $task){ 
     $ch[$i] = curl_init(); 
     curl_setopt($ch[$i], CURLOPT_URL, $task); 
     curl_setopt($ch[$i], CURLOPT_RETURNTRANSFER, 1); 
     curl_multi_add_handle($mh, $ch[$i]); 
} 
do {$mrc = curl_multi_exec($mh,$active); } while ($mrc == CURLM_CALL_MULTI_PERFORM); 
while ($active && $mrc == CURLM_OK) { 
     if (curl_multi_select($mh) != -1) { 
       do {$mrc = curl_multi_exec($mh, $active); } while ($mrc == CURLM_CALL_MULTI_PERFORM); 
     } 
} 
// completed, checkout result 
foreach ($tasks as $j => $task){ 
     if (curl_error($ch[$j])){ 
          echo "task ${j} [$task ] error " , curl_error($ch[$j]), "rn" ; 
     } else { // www.jb200.com
          echo "task ${j} [$task ] get: rn" , curl_multi_getcontent($ch[$j]), "rn" ; 
     } 
} 
?> 

<?php 
date_default_timezone_set( 'Asia/Chongqing'); 
echo "child start, pid ", getmypid(), "rn" ; 
for ($i=0; $i<5; ++$i){ 
     beep(); 
} 
exit (0); 
// *** 
function beep(){ 
    echo getmypid(), "t" , date('Y-m-d H:i:s' , time()), "rn"; 
    sleep(1); 
} 
?>