An array question

Hi, I have recently stumbled upon the lithium framework, I don’t really have much experience with frameworks and my skill level with php is mid level. I found this code in the home.html.php file in the views folder, I was hoping someone can explain how this array structure works. basically its

$sanityChecks = array(
	'resourcesWritable' => function() use ($notify) {
                //bunch of more code here
        },
        'database' => function() use ($notify) {
                //bunch of more code here
        },
       //etc....

I understand that resourcesWritable and database are the KEY in the associative array but I don’t really understand what the function() use ($notify) part is.

thanks to anyone who can help

http://us2.php.net/manual/en/functions.anonymous.php