Use $cat instead of $_GET['cat']

[plarsen]

Hi

I have a shopping system, that has several $ command but it will not work. I can use $_GET command however, but the other command is much easier to use and remember.

Are there anyone who can explain why i can't use then $ command anymore?

Thanks

Peter Larsen

 

[lgarner]

Change "register_globals" to "ON" in you php.ini. It's not recommended, since anyone can set values for your internal variables. Be careful to initialize *every* variable before you use it if you do this.

 

[kenrbnsn]

You can also use:

if (!empty($_GET))extract($_GET);
if (!empty($_POST))extract($_POST);

at the top of your code which will populate the variables for you, but you run into the same security concerns as setting "register_globals" to "ON".

Ken

 

[aardvark92]

See the php manual for a detailed explanation of why setting register_globals to "ON" is dangerous.

 

[sleipnir214]

knirke

As well as making your code more secure (see the link provide by aardvark92 above), use of the superglobals[ul][li]makes your code more portable. The superglobals are always available (assuming PHP version > 4.1.0), whereas the "field" variables may not be, depending on configuration.[/li][li]more maintainable. With a complex script, six months from now you may have no idea how the value got into $foo. But $_POST['foo'] is pretty obvious.[/li][/ul]

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