to know average and sum I want to know the students score

[LuciferStar 0]

<?php[br]if($_REQUEST['NUM']!=0)[/br]{[br]?>[/br]   <form method=post>[br]<?php[/br]   for($i=0;$i<$_REQUEST['NUM'];$i++)[br]      echo "field".($i+1)." <input type=text name="."field".($i+1)."                      value=".$_POST['field'.($i+1).'']."><BR>";[br]?>[/br]   <INPUT TYPE=SUBMIT>[/br]   </form>[br]<?PHP[/br]   for($i=0;$i<$_REQUEST['NUM'];$i++)[br]      $sum+=$_POST['field'.($i+1).''];[/br]   echo "SUM：\t".$sum."<BR>"."AVERAGE：\t".$sum/$i;[br]}[/br]?>

[LuciferStar 0]

<?php[br]if($_REQUEST['NUM']!=0)[/br]{[br]?>[/br] ? <form method=post>[br]<?php[/br] ? for($i=0;$i<$_REQUEST['NUM'];$i++)[br] ? ? ?echo "field".($i+1)." <input type=text name="."field".($i+1)." ? ? ? ? ? ? ? ? ? ? ?value=".$_POST['field'.($i+1).'']."><BR>";[br]?>[/br] ? <INPUT TYPE=SUBMIT>[/br] ? </form>[br]<?PHP[/br] ? for($i=0;$i<$_REQUEST['NUM'];$i++)[br] ? ? ?$sum+=$_POST['field'.($i+1).''];[/br] ? echo "SUM：\t".$sum."<BR>"."AVERAGE：\t".$sum/$i;[br]}[/br]?>

Usage:sum.php?NUM=100 to calculate the sum and average of 100 students' scores