IF Statements and Empty Variables

[branmh]

I need to know how to do an IF Statement with a Empty Variable and how it to redirect to another page.

I have tried this code but all it does to contiunes to reload.

if (empty($section)) { 
header("Location: index.php?section=index");
exit;
} 

So if you goto /index.php it would reload to /index.php?section=index

[coopster]

If register_globals [php.net] is ON, you may need to check the $_GET [php.net] superglobal array instead:

if (empty($_GET['section'])) {  

[Birdman]

Use the isset() function for that. Note the exclamation, which says 'if the var is not set'. Without the exclamation, the if statement would execute when the var 'isset'.

if (!isset($section))
{
header("Location: index.php?section=index");
exit;
}

[coopster]

Good point, Birdman. branmh, there is a difference between empty [php.net] and isset [php.net]. You may want to make sure you are using the correct function. msg #2 will still apply here, no matter which function you choose to use.