Vars in GET method... :(

daarius

hi,

file.php?MAIN

now, i have following code inside the file.php

if ($MAIN) {
   // do something
}
else {
   // do something else
}

But it always executes the else bit of the if statement.

Now, if i make it like: file.php?MAIN=true

then the following works fine:
if ($MAIN == true) {
   // do something
}
else {
   // do something else
}

So, is there anyway to check if the var is available in the GET?

I have also tried isset($MAIN); but nothing happens.

thanks,
Daarius...

dcomartin

When you are using the query string (URL), you always have a key and a value:

index.php?key=value

To split screens up into sections like you wanted in your first example do something like this:

$screen = @split("&", $QUERY_STRING);

if ($screen[0] == '')
{
// do something when the url is:
// http://site.com/index.php
}
elseif ($section[0] == 'main')
{
// do something when the url is:
// http://site.com/index.php?main
}

Hope this helps!

dcomartin

Oops screwed something up. Here its right..

$screen = @split("&", $QUERY_STRING);

if ($screen[0] == '')
{
// do something when the url is:
// http://site.com/index.php
}
elseif ($screen[0] == 'main')
{
// do something when the url is:
// http://site.com/index.php?main
}

lawnmowerman

Why not use ?MAIN=true or ?MAIN=1 ??

Just tacking ?MAIN to the end of the URL does not define or set the variable.

If you don't like the appearance of ?MAIN=true, etc...
try something like:

?goto=MAIN

?show=MAIN

-Rich

daarius

sure...

but i just wanted to keep the vars and their values to minimum.

e.g. ?MAIN would print the 'Main view' of the site and ?NAV will print the Navigator view and so on...

of course i can have something like ?VIEW=main and ?VIEW=nav etc...

thanks for the suggestions.

Daarius...

daarius

But splitting with & will only work if i have more than 1 var in the string e.g. ?MAIN=true&NAV=true

i guess...?

i think i need to split it with ? character, which will give me the rest of the URL in [0] of the array and my var in [1] of the array. I can use $REQUEST_URI for split()

thanks,
any other suggestions?

Daarius...

dcomartin

Nope.. here is example.. Try it out yourself..:

$section = @split("&", $QUERY_STRING);

if ($section[0] == '')
{
// When user goes to:
// http://www.yoursite.com/index.php
echo"This is the default page";
}

elseif ($section[0] == 'main')
{
// When user goes to:
// http://www.yoursite.com/index.php?main
}

Now if for example you wanted to pass variables to say 'main' you still can:

http://www.yoursite.com/index.php?main&var=value

you can now use $var or $HTTP_GET_VARS['var']

daarius

But, the first parameter of the split() is the pattern. in above example you have used '&' as the pattern in a query string, where there are NO & signs in e.g.:

hppt://www.com/file.php?MAIN

or, do you mean split('?', $string);

sorry, may be i cant see the obvious today 🙂

spider_man

Just add

'extract($HTTP_GET_VARS);'

and you'll see the $MAIN variable with no problem.

Anon

Hi,

I don't know why $QUERY_STRING not working but I did

<?
if(!isset($user))
{
print("No query String");
}
else
{
print($user);
}
?>

so it is working fine till now, Give me suggestion how can I use $QUERY_STRING??

Thank you

Anon

The best thing that you can do in this situation is what someone else suggested, by making on variable and setting it to the page you want it to go to...

file.php?page=main
rather than your idea of
file.php?main

The first is much more efficient because you are only setting aside space for one variable in memory and giving that variable a different value. If you just pass ?MAIN or ?NAV you are setting aside space for extra variables that the program will never use for data, just to check the existance. Unless you plan to unallocate the memory after you unload the script, just declare one variable and give it a value.

My site is run almost the same way, I have one file, main.php, and it passes different values to display different pages, like..

main.php?p=news will display news
main.php?p=pics will display pictures

And so on.

-Sam