need quick help with if statement

Can you point out what is wrong with this code:

if($email=="")
{
$link=="site1.com" ;
}
else
{
$link="site2.com";
}

$email value is taken from $_POST and passed onto <a href="<php $link>/click.php>

I get site2.com when $email is not null but I don't get site1.com when $email is null.

Please help

 

Try with

if ($_POST['email']=='')

Code (markup):

 

You've got an extra equals sign in this line:

$link=="site1.com" ;


Should be:

$link=="site1.com" ;

 

Both the solutions worked for me. thanks, rep added

Although, you too wrote the code wrong but I got it what you are saying.

 

You can also redirect it through the php code like header("Location: http://site.com");