CODEWITHSUNDEEP
laravellaravel-5laravel-5.4
panthro
panthro

Reputation: 24059

Creating a collection from a multidimensional array?

I'm trying to make a collection from some arrays of data:

$myCollection = collect(
    ['product_id' => 1, 'price' => 200, 'discount' => '50'],
    ['product_id' => 2, 'price' => 400, 'discount' => '50']
);

When I loop out I would like to do:

foreach ($myCollection as $product) {
    echo $product->price;
    echo $product->discount;
}

But the underlying elements appear to still be in an arrays format, how can I achieve the above output?

Upvotes: 5

Views: 20127

Answers (4)

Gravy
Gravy

Reputation: 12445

If you want the inner arrays to be a collection, then you can do so as follows:

$myCollection = collect([
    ['product_id' => 1, 'price' => 200, 'discount' => '50'],
    ['product_id' => 2, 'price' => 400, 'discount' => '50']
])->map(function($row) {
    return collect($row);
});

If you want the inner arrays to be objects, then you can do as follows:

$myCollection = collect([
    ['product_id' => 1, 'price' => 200, 'discount' => '50'],
    ['product_id' => 2, 'price' => 400, 'discount' => '50']
])->map(function($row) {
    return (object) $row;
});

You can also iterate over each of the results...

$myCollection = collect([
    ['product_id' => 1, 'price' => 200, 'discount' => '50'],
    ['product_id' => 2, 'price' => 400, 'discount' => '50']
])->map(function($row) {
    return (object) $row;
})->each(function($row) {
    echo sprintf('ProductId: %d, Price: %d, Discount: %s'.PHP_EOL, $row->product_id, $row->price, $row->discount);
});

Output:

ProductId: 1, Price: 200, Discount: 50
ProductId: 2, Price: 400, Discount: 50

Upvotes: 14

Troyer
Troyer

Reputation: 7013

Simple as you are getting a collection of an associative arrays because you are collecting arrays elements, so the collection helper doesn't want to modify it in case you need it as array.

Knowing this, if you want to collect objects you should pass an element of object type.

You can cast object data type into the array, like this:

$myCollection = collect( (object) array(
     (object)  ['product_id' => 1, 'price' => 200, 'discount' => '50'],
     (object)  ['product_id' => 2, 'price' => 400, 'discount' => '50'])
);

Then you have a collection of objects !

Upvotes: 5

edcs
edcs

Reputation: 3879

There's a syntax error in your collection definition:

$myCollection = collect([
    ['product_id' => 1, 'price' => 200, 'discount' => '50'],
    ['product_id' => 2, 'price' => 400, 'discount' => '50']
]);

Also, since you're using a Collection, you no longer need to use a foreach loop:

$myCollection->each(function ($item) {
    echo $item['price'];
})

Upvotes: -1

Margus Pala
Margus Pala

Reputation: 8663

Function collect() takes array of elements. You can fix your code also by enclosing all the elements into [] and then converting Collection elements to objects instead of leaving them to be arrays

    $myCollection = collect([
        (object)(['product_id' => 1, 'price' => 200, 'discount' => '50']),
        (object)(['product_id' => 2, 'price' => 400, 'discount' => '50'])
            ]
    );
    foreach ($myCollection as $product) {
        echo $product->price;
        echo $product->discount;
    }

Upvotes: 0

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