inotify,实时监控文件变化

inotify，PHP的一个扩展，用于监控文件变化

<?php
     $fd = inotify_init();
     $file = "/www/web/gateway/servers/LoanServer.php";
     $watch_descriptor = inotify_add_watch($fd,$file,IN_MODIFY);
     while(true)
     {
         $events = inotify_read($fd);
         if($events)
         {
             $out = shell_exec('pkill -f  LoanServer.php');
             echo var_export($out,1);            $output = shell_exec('/www/php/bin/php /www/web/gateway/servers/LoanServer.php');
             foreach($events as $event)
             {
                 //echo "inotify Event :".var_export($event, 1)."\n"; 
             }
         }
     }
     inotify_rm_watch($fd, $watch_descriptor);
     fclose($fd);
 ?>