php事务

<?php

set_time_limit(6);

function sel($time,$number,$count){
if($count > 10){
sel($time,$number,$count);
return ;
}else{
if(time() > intval($time)){
$count++;
@sel($time+$number,$number,$count);
}else{
task();
$time = $time + $number * $count;
$count++;
sleep($number);
@sel($time,$number,$count);
}
}
}

echo time();
sel(1473662611+8*3600,1,2);
//echo '<br>'.time();

function task(){
echo '<br> This is task'.time().'<br>';
}

?>