$_GET stuff

[Ph0enix]

Hi, im still learning PHP and iv just started to learn about the $_GET thing.

To test it i used this:

[code]<?php
print $_GET["test"];
?>[/code]

So then if i typed in my address bar

[a href=\"http://localhost/stuff/page.php?test=hello\" target=\"_blank\"]http://localhost/stuff/page.php?test=hello[/a]

Then i would get a page that displays "hello".

But i want to know how do i call a function.

So if i used this code for example.


[code]
function square_number($number) {
  
  $square= $number * $number;
  return $square;
}
[/code]

How would i call this function, so on the page it would show the result of this function.
Thanks.

[kenrbnsn]

Did you read the fine manual on [a href=\"http://www.php.net/manual/en/functions.returning-values.php\" target=\"_blank\"]using the return[/a] statement in functions? The first example tells you how to do that.

Ken

[Ph0enix]

Ok thanks.
But erm isnt there somthing i could write in the address bar to veiw the result of the function like..

[a href=\"http://localhost/stuff/page.php?test=function(sqare_number)\" target=\"_blank\"]http://localhost/stuff/page.php?test=function(sqare_number)[/a]
(i know this is wrong)

Cause on Postnuke you have to do something like this to display a function

[hitman6003]

You could do something using a url like:

www.whatever.com/number=2&function=square

Then your php would be:

[code]<?php

$func = $_GET['function'];

echo call_user_func($func, $_GET['number']);

function square_number($number) {
  $square= $number * $number;

  return $square;
}

?>[/code]