What is the difference between collection and array in laravel?

Question

What is the difference between collections and arrays in laravel?

Answer 1

Array in Laravel, source code locationIlluminateSupportArr.php;

Collections in Laravel, source code locationIlluminateSupportCollection.php;

A collection is a re-encapsulation of an array and is presented in the form of an object; it provides many method functions (most of these methods use callback functions internally), which is much more flexible than array-based operations;

Essentially, it’s the difference between operating elements in object-oriented form and operating elements in array form; if you operate with objects, as vika_倾慕 said, you can chain operations; if you operate with arrays, many intermediate temporary variables or statements and codes will be generated Seems verbose;

Answer 2

What makes collections more powerful than arrays is that they use various map/reduce intuitive operations. For example, we remove all inactive user models and collect the names of the remaining users:

$users = App\User::where('active', 1)->get();

$names = $users->reject(function ($user) {
    return $user->active === false;
})
->map(function ($user) {
    return $user->name;
});

If you think it’s okay, remember to adopt it