How can I check if an array contains a specific value in php

Question

I have a PHP variable of the type Array and I want to find out if it contains a specific value and let the user know that it is there. This is  array:

Array ( [0] => kitchen [1] => bedroom [2] => living_room [3] => dining_room) 

 I would like to do something like:

if(Array contains 'kitchen') {echo 'this array contains kitchen';}

What is the best way to do this?