分享PHP-pcntl 实现多进程代码

<?php
$arChildId = array();

for($i = 0; $i < 10; $i++)
{
$iPid = ptl_fork();
if($iPid == -1)
{
  die('can\'t be forked.');
}

if($iPid)
{
  # 主进程逻辑
  $arChildId[] = $iPid;
}
else
  {
  # 子进程逻辑
  $iPid = posix_getpid(); # 获取子进程的ID
  $iSeconds = rand(5, 30);
  echo ' Process '. $iPid. ' was created, and Executed, and Sleep '. $iSeconds. PHP_EOL;
  excuteProcess($iPid, $iSeconds);
  exit();
}
}

while(count($arChildId) > 0)
{
foreach($arChildId as $iKey=> $iPid)
{
  $res = ptl_waitpid($iPid, $status, WNOHANG);

  if($res == -1 || $res > 0)
  {
    unset($arChildId[$iKey]);
    echo ' Sub process: '. $iPid. ' exited with '. $status. PHP_EOL;
  }
}
}

# 子进程执行的逻辑
function excuteProcess($iPid, $iSeconds)
{
file_put_contents('./log/'.$iPid.'.log', $iPid.PHP_EOL, FILE_APPEND);
sleep($iSeconds);
}
?>

 Process 16163 was created, and Executed, and Sleep 11
 Process 16164 was created, and Executed, and Sleep 21
 Process 16165 was created, and Executed, and Sleep 24
 Process 16166 was created, and Executed, and Sleep 27
 Process 16167 was created, and Executed, and Sleep 8
 Process 16168 was created, and Executed, and Sleep 14
 Process 16169 was created, and Executed, and Sleep 14
 Process 16170 was created, and Executed, and Sleep 26
 Process 16171 was created, and Executed, and Sleep 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