How to use php array with sql IN operator?

Question

I have and array with two values and I want to use it with sql IN operator in select query.

Here is the structure of my table

id comp_id
1   2
2   3
         


        

Answer 1

You're mixing PHP and SQL - for the IN SQL operator, you need a format like:

SELECT * from table WHERE comp_id IN (1,2)

So to get that in PHP you need to do something like:

$sql = "SELECT * from table Where comp_id IN (".implode(',',$arr).")"

Bear in mind that this only works if the array comprises of integers. You have to escape each element if they are strings.