PHP daemon

 
<?php
  
function daemon()
{
    $pid = pcntl_fork();
  
    if ($pid == -1)
    {
        exit(1);
    }
    elseif ($pid > 0)
    {
        exit(0);
    }
    else
    {
        posix_setsid();
        umask(0);
        chdir('/');
        fclose(STDOUT);
        fclose(STDERR);
  
        $pid = pcntl_fork();
  
        if ($pid == -1)
        {
            exit(1);
        }
        elseif ($pid > 0)
        {
            exit(0);
        }
        else
        {
            unset($pid);
        }
  
    }
}
  
function job()
{
    // your job here
}
  
daemon();
  
while (true)
{
    job();
    sleep(1);
}