in_array question

[We Must Design]

I am wanting to check if a value is in array. I am using the following:

 

$in_array = in_array ($name, $_SESSION['favoriteArray']);

 

A problem occurs though when there is no data in the array. I get the error message:

 

Warning: in_array() [function.in-array]: Wrong datatype for second argument

 

How would I tell the script to only use the in_array function if there is a function to check?

[darkfreaks]

in_array("favorite",$variable);

[Orio]

<?php

if(is_array($_SESSION['favoriteArray']))
$in_array = in_array ($name, $_SESSION['favoriteArray']);
else
$in_array = FALSE; //Or whatever you think it should be...

?>

 

 

Orio.