cd php-version/ext/pcntl 
phpize 
./configure  make  make install 
cp /usr/lib/php/modules/pcntl.so /usr/lib64/php/modules/pcntl.so 
echo "extension=pcntl.so" >> /etc/php.ini 
/etc/init.d/httpd restart 

?php 
header('content-type:text/html;charset=utf-8' ); 
 
// 必須加載擴展 
if (!function_exists("pcntl_fork")) { 
  die("pcntl extention is must !"); 
} 
//總進程的數(shù)量 
$totals = 3; 
// 執(zhí)行的腳本數(shù)量 
$cmdArr = array(); 
// 執(zhí)行的腳本數(shù)量的數(shù)組 
for ($i = 0; $i  $totals; $i++) { 
  $cmdArr[] = array("path" => __DIR__ . "/run.php", 'pid' =>$i ,'total' =>$totals); 
} 
 
/* 
展開：$cmdArr 
Array 
( 
  [0] => Array 
    ( 
      [path] => /var/www/html/company/pcntl/run.php 
      [pid] => 0 
      [total] => 3 
    ) 
 
  [1] => Array 
    ( 
      [path] => /var/www/html/company/pcntl/run.php 
      [pid] => 1 
      [total] => 3 
    ) 
 
  [2] => Array 
    ( 
      [path] => /var/www/html/company/pcntl/run.php 
      [pid] => 2 
      [total] => 3 
    ) 
 
) 
*/ 
 
pcntl_signal(SIGCHLD, SIG_IGN); //如果父進程不關心子進程什么時候結束,子進程結束后，內(nèi)核會回收。 
foreach ($cmdArr as  $cmd) { 
  $pid = pcntl_fork();  //創(chuàng)建子進程 
  //父進程和子進程都會執(zhí)行下面代碼 
  if ($pid == -1) { 
    //錯誤處理：創(chuàng)建子進程失敗時返回-1. 
    die('could not fork'); 
  } else if ($pid) { 
    //父進程會得到子進程號，所以這里是父進程執(zhí)行的邏輯 
    //如果不需要阻塞進程，而又想得到子進程的退出狀態(tài)，則可以注釋掉pcntl_wait($status)語句，或寫成： 
    pcntl_wait($status,WNOHANG); //等待子進程中斷，防止子進程成為僵尸進程。 
  } else { 
    //子進程得到的$pid為0, 所以這里是子進程執(zhí)行的邏輯。 
    $path  = $cmd["path"]; 
    $pid = $cmd['pid'] ; 
    $total = $cmd['total'] ; 
    echo exec("/usr/bin/php {$path} {$pid} {$total}")."\n"; 
    exit(0) ; 
  } 
} 
?>