Check if a Value Exists in an Array – PHP

How to check if a value exists in an array using PHP. PHP provides a couple of inbuilt method such as in_array() , array_search() through which we can check if a value exists in an array or not. Apart from using inbuilt PHP methods, we’ll write our own custom method as well.

Let’s check how to solve this problem using PHP inbuilt method as well as our own custom function.