[andrewvideo]

I am geting a message saying Undefined index: a line at 3.

this only come up when you type
http://www.homepage.com/index.php

if you put
http://www.homepage.com/index.php?a=whats
it works without messages errors.

How can i can make the php ignore "Undefined index: a line at 3" Can i add a other line so thats ignore that line, if someone only put in index.php

PHP Code:

$a = $_GET['a']; 

[FiRe]

if (isset($_GET['a'])) { $a = $_GET['a']; }

[Acecool]

$a = (isset($_GET['a'])) ? $_GET['a'] : '';

[andrewvideo]

Thank you that works.

What the diffents beteen Fire's code and becool's code.

which one is the best to use?

[FiRe]

they both do the same just use different syntax thats all!

if u r new to php tho i wud use my one, ace's is slightly more confusing...

[Acecool]

FiRe's is in wrong syntax, the style I used was meant for short checks and one line - FiRe's is an if statement, that are meant for 4 lines or more..

PHP Code:

if (condition)

{

     // Do something

} 

vs

PHP Code:

(condition) ? condition is true : condition is false;