Jason Pruim wrote:
Hi everyone!
So, I'm trying to learn about functions, and I think I understand what
to use them for... And one of the ideas I had was to write a function to
logout of an application. The question I have though, is how do I call it?
Right now I just have a link like this: <A href="logout.php">Click here
to logout</A> Can I do the same thing with a function? And if so, then
maybe I don't really understand functions like I thought I did...
Because to me, that would look like it would be just the same as calling
a single script to logout vs. a function?
--
Jason Pruim
Raoset Inc.
Technology Manager
MQC Specialist
3251 132nd ave
Holland, MI, 49424
www.raoset.com
japruim@xxxxxxxxxx
Functions basically save you repeating code; for example, let's say we
have these lines of code in 10 scripts on our website:
if(isset($_GET['pageid']) && trim($_GET['pageid'])) {
$pageid = trim($_GET['pageid']);
} else {
$pageid = '1';
}
you could wrap this code up in a function as such:
function get_pageid() {
if(isset($_GET['pageid']) && trim($_GET['pageid'])) {
$pageid = trim($_GET['pageid']);
} else {
$pageid = '1';
}
return $pageid;
}
save that function (along with other functions you've made) in an php
file (example: myfunctions.php)
then in every script we simply include our functions file and call our
function(s) as and when we need them:
scripta.php:
<?php
include 'myfunctions.php';
$pageid = get_pageid();
//more code
?>
I'm no technical writer but I think that about sums it up.
Nathan
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
