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POPHP pcntl script - need guidance
 

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  1. POPHP pcntl script - need guidance
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    <p>I am working on a scraping project, somewhere in the application I need this functionality </p> <p>run a script again and again with a pause of some seconds.</p> <p>I tried to use pcntl to accomplish the job. so wrote this script</p> <pre><code>/************************/ $intra_sleep=10; // we're going to set the intra process launch sleep at 10 seconds $task_process=null; // by default this is set to null -- do nothing $loop_limit=0; // this is the number of times the loop shoul run -- if set to -1 look infinite number of times if (isset($argv[1])) $task_process=$argv[1]; if (isset($argv[2])) $intra_sleep=$argv[2]; if (isset($argv[3])) $loop_limit=$argv[3]; for ($loop_count=0; $loop_limit==-1 ? true : $loop_count&lt; $loop_limit; $loop_count++) { $pid= pcntl_fork(); if ($pid == -1) { die('MASTER: could not fork'); } else if ($pid==0) { if ($task_process) { echo "Sleeping for $intra_sleep Seconds\n"; sleep($intra_sleep); echo "Launching Child \n\n"; exec($task_process); // from here process script is being launched } else { echo " CLONE: no task process defined -- doing nothing " . PHP_EOL; } } else { pcntl_waitpid($pid,$status); } } /*********************/ </code></pre> <p>I am calling this script from CLI like this way</p> <pre><code>nohup php /this/script.php "php /path/to/process.php" 10 -1 </code></pre> <p>I expect that process.php will be launched again and again with 10 seconds intervals. It was doing work what I was expecting, but when I check runing processes, there were thousands processed running, launched by this script.</p> <p>My requirement is very simple: a script should be launched again and again with 10 second Pause.</p>
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