Question

Say I have the following:

Array(
[0] => Array
    (
        [id] => 1
        [item] => first item
    )

[1] => Array
    (
        [id] => 3
        [item] => second item
    )

[2] => Array
    (
        [id] => 5
        [item] => third item
    )

)

I want to delete the item with id = 5. I know I can loop through the array and unset, but I’m hoping for a more direct/efficient solution.

Answer 1

If you cannot make the IDs the keys of the outer array (then you could simply use unset($arr[5]);), looping over the array is indeed the way to dg.

foreach($arr as $key => $value) {
    if($value['id'] === 5) {
        unset($arr[$key]);
        break;
    }
}

Another option would be using array_filter – that’s less efficient though since it creates a new array:

$arr = array_filter($arr, function($value) {
    return $value['id'] !== 5;
});