Passing variables in url

Paranormalcy

Good evening.

I have a quick question regarding php and passing variables or parameters in a url.

I guess what i am trying to find out is when it is needed and/or used.

example: ( i cut and pasted the url i have for this forum)

http://phpbuilder.com/board/newthread.php?do=newthread&f=2

as you can see there is ?do=newthread&f=2

In what instances do i need to implement something like this and what is the formal name for something like this...so i can do some research about it. It seems to be used a whole lot with php and asp.

Thanks for any help anyone can offer.

coreyp_1

you use this to pass variables to a script. This is used for a number of reasons, usually having to do with dynamic content.

In php, the query line (stuff after the "?") variables are accessed using the $_GET superglobal array.

In your example

?do=newthread&f=2

$GET['do'] = 'newthread'
$GET['f'] = 2

read up on superglobals ($GET, $POST, $_SERVER) and look at any examples you can find

Paranormalcy

Thanks Corey.

I was doing a bit of reading on another post by someone and it seem as though this is usually taking place with get instead of post. Am I correct in assuming this or can it work with post as well? It seems from the forum post that i read get passes an array string though the url and post does not. I know this to be true from regular form use. So is it safe to say that if i use post method instead of get i would never encounter something like this URL with the variable inserted?

Weedpacket

GET and POST are two different kinds of http request. GET doesn't have any content, only headers; so if form data is sent it's stuck in the headers as part of the requested URL. POST does have content - all the form data, which therefore doesn't get shovelled into the URL.

padanaram

I have a line of code that will allow you to post variables in a url, you can do basically anything you want with this. It is set up for an number, it might need edited a little if you need to use a word characters.

$id = (int) isSet($_GET['id']) ? $_GET['id'] : 0;

Weedpacket

Details on how to use GET and POST can be found in the manual under http://www.php.net/manual/en/language.variables.external.php

Paranormalcy

Thanks guys for all your help. The maunual is a big help!