If...do nothing... else... do something

[Boerboel649]

This a super quick and easy question (I hope...)

 

Basically I'm righting a little script that will check the HTTP Referer, and if it equals such and such then to do nothing (ie let the user remain on that page.) If it doesn't equal that then it's gonna redirect them to another page. Basically what I need is how to say "do nothing" in PHP... Would it go something like this?

 

if(blahblahblah){

}

 

 

??

 

Thanks!

[only one]

if(whateveritis==NULL){ }else{ do something.. }

or

if(!whateveritis==NULL){ do something }

or

if(!whateveritis){ }else{ do something.. }

 

[kenrbnsn]

Instead of testing for the positive and doing nothing, test for the false condtion and do the header:

<?php
if ($something != $condition)
     header(" ... ");
?>

 

Ken

[Boerboel649]

Good idea kenrbnsn, however having trouble getting it to work... here's the code:

 

<?php
$condition = "www.myurl.com/referer.php";
if ($HTTP_REFERER != $condition)
     header("www.myurl.com/redirectpage.php ");

?>

 

It isn't redirecting me at all...

[kenrbnsn]

That probably should be written as:

<?php
if ($_SERVER['HTTP_REFERER'] != 'www.steamfootball.com/authorize.php')
     header("www.steamfootball.com/login.php ");
?>

 

Ken

[boo_lolly]

try printing the value of $HTTP_REFERER to make sure it's the value you're looking for:

<?php
$condition = "www.steamfootball.com/authorize.php";
echo "condition: {$condition}<br />\n";
echo "http referer: {$_SERVER['HTTP_REFERER']}<br />\n";
if ($_SERVER['HTTP_REFERER'] != $condition){
     echo "'if' condition passed requirements";
     header("www.steamfootball.com/login.php ");
}	 
?>

[spraypray12]

try:

<?php
if ($_SERVER['HTTP_REFERER'] != 'www.steamfootball.com/authorize.php')
     header("Location: www.steamfootball.com/login.php ");
?>

[Boerboel649]

Thanks spraypray12!  That worked, I just had to change the URL to redirect to.

 

Here's final code:

<?php
if ($_SERVER['HTTP_REFERER'] != 'www.steamfootball.com/authorize.php')
     header("Location:/login.php ");
?>

[roopurt18]

You might want to include a call to exit() after your call to header(), depending on what follows in the page.

[spraypray12]

Hey no problem man.