Question

Struggling with a tiny problem.

I have an array:

Array
(
    [0] => 
    [6] => 6
    [3] => 5
    [2] => 7
)

I am checking if a set value is in the array.

if(in_array(5, $array)) {
//do something
} else {
// do something else
}

The thing is, when it find the value 5 in array, I really need the key to work with in my “do something”.

In this case I need to set:

$key = 3;

(key from the found value in_array).

Any suggestions?

Answer 1

array_search() is what you are looking for.

if (false !== $key = array_search(5, $array)) {
    // found!
} else {
    // not found!
}