recursion

nulogix · June 28th, 2004, 01:20 PM

recursion.html

<html>
<head></head>
<body>
<form method=get action="recursion.php">
I would like to know the factorial of
<input name="value" type="text">
<input type=submit>
---------------------------------------
recursion.php
<?php
function recursion($value)
{ if($value<=1)
   return 1;
  else
   return $value*recursion($value-1);
}
echo"The factorial of ".$value." is ".(recursion($value));
?>
--------------------------

for the recursion.php page where do i use the $_GET['value'] call and where do i just leave it as $value.

thanks

grimmy · June 28th, 2004, 03:58 PM

you could just use $value = $_GET['value'] at the top, above the function recursion($value) line.
but, really, you should be able to place it almost anywhere, just as long as it's set before it's used in the echo statement.

after you've set the value for $value, you should be able to call it without using $_GET().