retrieve the first non-null value from collection

[foremtehan]

What's the equivalent of this in collection?

$keys = ['a', 'b', 'c'];

foreach ($keys as $key) {
    if ($value = $this->get($key)) {
        break;
    }
}

it should not iterate over all keys

[henzeb]

Use ->filter(fn($bar)=>$bar===null)->first();

[noefleury]

One snippet which assign the value to the $firstElement variable and directly stop the iteration.

$elements = collect([null, null, 'a', 'b', 'c', 'd']);

$firstElement = null; // will be filled with the first element which is considered as true

$elements->each(function ($element) use (&$firstElement) {
    if ($element) {
        $firstElement = $element;
        return false; // force stopping iteration
    }
    return true;
});

dd($firstElement); // 'a'

But maybe it could be optimized if you explain more what you are looking for.