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komquat

Should my address look like this?

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HELP!! I do not know why one would use this, or how to even start using. I am looking for a GOOD tutorial on this and and explaination on why to use it.

Sample code would be great too.

Thanks for all the help in advance!

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You would generally use this to send information across pages or changing a page's content based upon what follows the "?" in the url.

Basically you are passing data via the URL and then you obtain it using the $_GET superglobal.

I.e

www.mysite.com/index.php?action=showpage


would mean:

$_GET["action"] holds the value "showpage"

You can pass more than one piece of info as well, you just need to use '&'

i.e

www.mysite.com/index.php?show=comments&id=6

this would result in $_GET containing
[code]
$_GET["show"] = "comments"
$_GET["id"] = 6
[/code]

$_GET is an array so you may view all of it's contents using print_r and of course treat it as you would any other way.

Sending the data to the url is as easy as you might think.
[code]
<a href='index.php?show=comments&id=6'>link</a>
[/code]
Of course you can (and most of the time, probably will be) using variables in the url
[code]
<a href='index.php?show=$show&id=$id'>link</a>
[/code]

One word of warning. If you plan on doing any sql queries based upon information contained in $_GET make sure you have validated and cleaned the info. GET is one of the most open methods of SQL injection that there is.

Hope that helps!

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