2 errors I can not understand

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Hi all,

Please see my output below followed by the code. I have been trying for some to figure out why

1) I can not get a line feed to work in the web page that i am using to display the output as I am not running from the commad line

2) Why my loop is only executing 3 times when i want it to execute 50

Any help would be greatly appreciated.

Jonathan

The next line is all that displays on the output html page:

Output: The number 0 is 0 The number 1 is 0 The number 2 is 1 The number 3 is 1

php script:

<html>
<body>
<?php
for ($k=0;$k<50;$k++)
{
echo ("The number ".$k." is ".isprime($k));
echo "\r\n";
}

function isprime ($s)
{
$a="2";

               switch ($s)
               {
               case "0":
               $a="0"; break;
               case "1":
               $a="0"; break;
               case "2":
               $a="1"; break;
               default:
               $d=3;
                       while ($d<$s)
                       {
                               if ($s%$d=0)
                               {
                               $a="0";
                               }
                       $d+=2;
                       }
               }

               if ($a=="2")
               {
               $a="1";
               }
return $a;
}
?>
</body>
</html>

"tjon2.php" 78L, 447C written

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