Check if a specific value exists at a specific key in any subarray of a multidimensional array

Question

I need to search a multidimensional array for a specific value in any of the indexed subarrays.

In other words, I need to check a single column of the multidimension

Answer 1

As in your question, which is actually a simple 2-D array wouldn't it be better? Have a look-

Let say your 2-D array name $my_array and value to find is $id

function idExists($needle='', $haystack=array()){
    //now go through each internal array
    foreach ($haystack as $item) {
        if ($item['id']===$needle) {
            return true;
        }
    }
    return false;
}

and to call it:

idExists($id, $my_array);

As you can see, it actually only check if any internal index with key_name 'id' only, have your $value. Some other answers here might also result true if key_name 'name' also has $value