variable usage

Patriot

After reading and reading PHP mauals and online documentation, I still cannot determine why I cannot use form variables in condition statements or query statements.

Take for example:
if($id) {
.
.
}

Instead I have to use the following to make the condition work:
if($_POST['id']) {
.
.
}

If a variable is within scope, why can the first option not be used?

Perplexed...

Bill

Zack

maybe something needs to be turned off/on in your php.ini file (i think it's called)... I've never installed php or ran a server, so Im not sure... but it's a guess...

juschillinnow

there was just a post about this about two hours ago. Look for it.

What you need to do is open your php.ini file and look for the line that looks like:

global_variables = OFF;

and change it so it says

global_variable = ON;

just change the OFF to ON and save the file and then you are all set.

This is not recommended among many php programmers.

pyro

lol... this is the third time I've seen a question about global variables today... 😃

juschillinnow

yeah. If you do a search for it, I'm sure you will see it a bunch of times.

USE THE SEARCH PEOPLE!!!

🆒 :p

pyro

Yep, a search for 'global variables' returned 229 matches... :p

Patriot

If you read the following article,(http://www.php.net/release_4_1_0.php), the use of global variables is a bad idea. Security of a site can be compromised by using the old method. That is why PHP4 supports 7 new special arrays.

Although your responces are appreciated, they are not useful.

Thanks anyway.

Weedpacket

You should re-read Zack's post again, then. In fact, re-read the page you linked to.

Patriot

from the php.ini file.

; You should do your best to write your scripts so that they do not require
; register_globals to be on; Using form variables as globals can easily lead
; to possible security problems, if the code is not very well thought of.

I do enjoy this forum for learning and it is always nice to speak to individuals who know their business.

Thank you everyone!