如何从laravel中的Array中提取值？

Question

Let just say i have this [{"id":21},{"id":22}] array coming up from this :

$schedules = [];
    foreach ($routes as $route) {
        $schedules[] =Schedule::select('id')
                        ->whereIn('route_id', $route)
                        ->latest()
                        ->first();  
    }

So, i want to extract the value from it like this [21,22], so i did it like this:

$values = $schedules->pluck('id')->toArray();

this showing this error

Call to a member function pluck() on array

Answer 1

To achieve what you're after with the code you have you can use array_map:

$values = array_map(function ($item) {
    return $item->id;
}, $schedules);

Alternatively, you could simply get the id initially by either using ->first()->id or value('id'):

foreach ($routes as $route) {
    $schedules[] =Schedule::select('id')
                    ->whereIn('route_id', $route)
                    ->latest()
                    ->value('id');  
}