มันเกิดแบบนี้ขึ้นอ่าฮะ Fatal error: Maximum execution time of 60 seconds exceeded in

<?
	     $date = date("d/F/Y");
		 $nowdate = explode("/",$date);
	     $sql = "SELECT Name,Flavor,Expdate FROM snack";
		 mysql_query("SET NAMES 'utf8'");
		 $result = mysql_query($sql);
		 $total = 0;
		 $totalnowday=0;
64->>	for($i=1;$i!=$nowdate['1'];$i++)
		 {
		   if($nowdate['1']=="1"||$nowdate['1']=="3"||$nowdate['1']=="5"||$nowdate['1']=="7"||$nowdate['1']=="8"||$nowdate['1']=="10"||$nowdate['1']=="12")
			  $totalnowday += 31;
		   else if($nowdate['1']=="2")
		   {
			  if((($nowdate['2']%100)==0) && (($nowdate['2']%400)!=0))
				 $totalnowday += 28;
			  else if(($nowdate['2']%4)!=0)
				 $totalnowday += 28;
			  else
				 $totalnowday += 29;
		   }
		   else
			  $totalnowday += 30;
		}
		$totalnowday += $nowdate['0'];
		 $j=1;
		 while($date = mysql_fetch_array($result))
		 {  			       
		    if($j<=5)
			{
		      $expdate = explode("/",$date['Expdate']);
			
			  if($nowdate['2']==$expdate['2'])
			  {

					 $totalexpday=0;
					 for($i=1;$i!=$expdate['1'];$i++)
					 {
					   if($expdate['1']=="1"||$expdate['1']=="3"||$expdate['1']=="5"||$expdate['1']=="7"||$expdate['1']=="8"||$expdate['1']=="10"||$expdate['1']=="12")
						  $totalexpday += 31;
					   else if($expdate['1']=="2")
					   {
						  if((($expdate['2']%100)==0) && (($expdate['2']%400)!=0))
							 $totalexpday += 28;
						  else if(($expdate['2']%4)!=0)
							 $totalexpday += 28;
						  else
							 $totalexpday += 29;
					   }
					   else
						  $totalexpday += 30;
					}
					$totalexpday += $expdate['0'];
			      if($totalexpday-$totalnowday<=30)
				  {        ?>