Using $_GET
 

I want to know how to make those PHP links like:

index.php?page=hello

index.php?page=player&id=747
etc..

Someone please tell me how, and if there is another way other than $_GET, then please tell me.
I'm not a beginner, but teach me as a beginner please.

do you want to know how read it into the php file or how to make a link to a php file?

also you made a contradiction, you are beginner or you aren't. you can't be both, sry:(

I wrote this I hope it helps.

What I meant is I know how to do it but I make mistakes most of the time, so I said it's better teaching the easy way.

Thanks but can you also tell me how can I do the sub sub pages, like index.php?act=mods&do=download&modid=45

You got it, OK now teach me the HARD WAY!

And can you also tell me how can I use the CASE and ARRAY

See http://nl2.php.net/manual/en/control...res.switch.php and http://nl2.php.net/manual/en/ref.array.php

Thanks Marco, but can anyone also tell me how can I do the sub sub pages, like index.php?act=mods&do=download&modid=45
__________________
One extra thing, what is "global $anything, $anothervar"
I read about it and it's:
An associative array containing references to all variables which are currently defined in the global scope of the script. The variable names are the keys of the array.
So I wanted to know what's the use of it?

Just create if branches in your script:

I didn't understand what you meant!

if($_REQUEST['modid'] == 46)
{
do something;
}
if($_REQUEST['page'] == "home)
{
do something else;
}

please though run your data through the vbulletin GPC if your using vbulletin or sanatize incoming data.

Thanks, I really appreciate it, and the "List mods" will be shown everywhere isn't it?

What's the difference between $_GET and $_REQUEST?

$_REQUEST can be used as both $_POST and $_GET

Thanks for the reply :)

Perhaps you should start by reading about php, these are pretty basic questions covered by any php online manual or book.

I actually know these stuff but they didn't work at the first place for some typo mistakes, that's why I asked.

I just have one more question: :)

If I had a MySQL table called players:
By using $_GET, how can I set the value of "$playername" to the player name in the database according to the ID.

For example, if someone opened index.php like:
index.php?id=1, then I want the $playername to be set to John, and if ?id=2 then to be set to Paul, then if ?id=3 then to be set as Puyol. According to what's on the database.

as paul says
start reading about php and mysql
or look into the tutorials

https://vborg.vbsupport.ru/forumdisplay.php?f=184

I know what he said and I couldn't find it because what I want to do is lots of combination of codes and I've read lots and lots of php tutorial and I can't waste some time in finding this answer, so if anyone can be kind enough in giving me the answer please. :)

You would use something like

In this case I'd also use strlen and is_numeric to check that it's only a number and it's very short character sequence being requested, or some other failsafing of your choice. Note the use of REQUEST and not GET, when using vBulletin you should always use REQUEST and not GET.

That's not strictly speaking true, $_REQUEST is a combination of both. It's not a case of "can be used" as you don't have a choice.

I'm pretty sure you would want to clean the variables before doing something like that.

Yes, always clean global variables $_POST, $_GET, and $_REQUEST with vBulletin's built in cleanser:

https://vborg.vbsupport.ru/showthread.php?t=119372

That's what I just said. :confused:

Is there any reason to use the input cleaner instead of just performing the checks yourself as I suggested? The advantage that way is that you don't have to change the way you access the variable and you can also assign extra or different checks instead of being limited to the few GPCs and can assign if/else to deal with the data as well. That's a terrific tutorial but the one thing it doesn't do is explain why you should use it instead of your own way.

Thanks :)

If I did this:
$playername = SELECT name FROM players WHERE id='" . $_REQUEST['id'] . ''

Will it work?

It complies with vBulletin's coding standards, I don't know why you wouldn't want to use a tool like that provided for you. If you are going to run the sanitizing functions manually, it is fine, but it is always open to you forgetting to clean a variable. If you use $vbulletin->GPC, you have more confidence that your variables are being cleansed properly.

The only case where I would consider not using vB's sanitizing functions would be if you're only dealing with one single int variable in a plugin, then it would probably be more readable/simpler to just use intval to force it to be an int. If I remember right, that's what vB does anyway to sanitize an int variable.

$i = intval ($_GET['i']);

In all other cases (and maybe even in this one), follow Danny's advice.

What should I put in the red text if I'm going to using REDTYGER's advice?