Ограничение выполнения скрипта по времени

$sitestat=file($pathroot);$sitestat_count=count($sitestat);
$sitestat5=file($pathroot1);$sitestat_count5=count($sitestat5);
$url[]="";$click5[]="";$url5[]="";
for ($d=0;$d<=$sitestat_count-1;$d++) {$sitestat_id=explode("::::", $sitestat[$d]);$url[$d]=$sitestat_id[1];}
for ($dd=0;$dd<=$sitestat_count5-1;$dd++) {list($click5[$dd],$url5[$dd])=explode("::::", $sitestat5[$dd]);}
$w1=0;$check=0;
while ($w1<=$sitestat_count-1):
  $w2=0;echo "$w1
";
  while ($w2<=$dd):
    if ($url[$w1]==$url5[$w2]):
      $click5[$w2]++;$check=1;
      break 1;
    endif;
    $w2++;
  endwhile;
  if ($check==0) {$dd++;$click5[$dd]="1";$url5[$dd]=$url[$w1];}//åñëè íåò ñîâïàäåíèÿ, òî äîáàâëÿåì íîâóþ ñòðîêó
  $w1++;$check=0;
endwhile;

$today = file($pathToday);
$today_lines = count($today);
if ($today_lines > 0)
{
 for ($i=0; $i<$today_lines; $i++)
 {
  $today[i] = explode("::::", $today[$i])[1];
 }
  
 $total = file($pathTotal);
 $total_lines = count($total);
 $urlHits = array();
 for ($i=0; $i<$total_lines; $i++)
 {
  $hit = explode("::::", $total[$i]);
  $urlHits[$hit[1]] = $hit[0];
 }
  
 for ($i=0; $i<$today_lines; $i++)
 {
  $url = $today[$i];
  $urlHits[$url]++;
 }
}

$tmp = explode("::::", $today[$i]);
$today[i] = $tmp[1];