Variable Question

Regular Joined: Jul 26, 2006 Posts: 52

The mainfile.php uses several variables.

$name would hold the module name such as "Journal".
I can see the then value of $name equal to Journal by echoing out the variable name.

But lets say I wanted to drill down futher in the name.

Lets say I want to edit my Journal for example: modules.php?name=Journal&file=editmodules.php?name=Journal&file=edit

or I wanted to add a Journal entry
modules.php?name=Journal&file=add

I know that $name holds the module part "Journal" but what if I want to get the remainder of the link.

The "edit" or file"

So in the modules.php?name=Journal&file=edit

$name = Journal

but what variable would hold the "edit" or "add" so I could capture that variable?

I am trying to capture or drill down futher from the module name and get the actiual content it is executing.

Hope I explained it good enough to understand.

Thanks in advance...

Posted: Fri Dec 22, 2006 11:52 am

I don't undertstand what you are trying to do but anything further than the module name will load a fucntion within that module provided you have the permission (user or admin) to execute that function.
Additionally, there are security checks in place to ensure functions are loaded only within the module itself and it would be most unwise to even attempt to change that.

Posted: Fri Dec 22, 2006 12:16 pm

Let me try again, it is hard to explain....

If I click Journal I will see the following:
journal.html?file=editjournal.html?file=edit

or

faq.html

Lets say I want to print out the above link using echo

I know in the mainfile.php $name will hold "Journal"

or it will hold "News"

So if I echo $name I will see "Journal" or "News" depeding on which link I clicked.

Is there a global variable that holds the the functions. So lets say I set and echo $function for example:

in the journal.html?file=editjournal.html?file=edit is there a global varible that holds the function to the module?

For example I did the following:

echo $name = "Journal"
echo $function = "edit"
so on ....

I am hoping there is a global variable or a way to set one to parse out the entire line and break it into seperate variables.

Posted: Fri Dec 22, 2006 12:37 pm

Yes but its only available within the module.
Its usually $op but if you search the modules index.php file for 'switch' you should find it.
The value of the variable is usually either set to a default value of null

Code:

if(!isset($op)) $op='';

unless the module sets its own default value which would be the name of the function loaded by default.

So if you tried to echo the value out in mainfile, it would return nothing unless you click on a link to take you to a specific module (except perhaps if the module is loaded 'in home').

It might be easier for you to see whats happening if you turn your url re-writing off.
You do not want to be creating new global variables unless you absolutely have to as once created they are available throughout nuke which means it may be possible to inject the variable into a crafted url string with some diasterous results.

Posted: Fri Dec 22, 2006 1:13 pm

Thanks that gave me exactly what I needed. It seems everything just before the = is a variable and can be captued.

Posted: Fri Dec 22, 2006 8:08 pm

Read up on gets. There are two basic means that web programs use to communicate with each other ... post and gets. Gets do what you are referring to above, generally what is put in them is based on user response and then the "receiving" program decodes them and takes an action based on the contents. You can see examples within the Nuke code but you'd be better off reading some basic explanations first.