will this code check if value is null

[bleustreak12]

will this code check if value is null 

 

if($_SESSION["cart"] != null)

[freelance84]

 

You could do:

 

if(!empty($_SESSION["cart"]))

 

[bleustreak12]

 

You could do:

 

if(!empty($_SESSION["cart"]))

 

empty function takes 0 also as empty, what if my 

$_SESSION["cart"]=0

[freelance84]

 

Ah true, then you could use isset

if(isset($_SESSION['cart']))
{
//do something
}

[Muddy_Funster]

will this code check if value is null 

 

if($_SESSION["cart"] != null)

it's one line of code, you would have been quicker testing it yourself

 

if(strlen(trim($_SESSION['cart'])) >= 1)

could also be an option

[AyKay47]

I like is_null

But for a session value you can use isset