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Php collection

inspired by Illuminate\Support\Collection and Lodash

Usage

composer require izica/php-collection

Notice

Every method will returns new collection, not mutated collection;

$collection = PhpCollection:collect([100, 200, 300, 400]);
$collection2 = $collection->filter(function($item){
    return $item > 200;
})

/*
    $collection != $collection2
*/

Documentation

collect($array, $isSingleElement = false)

$products = [
    ["id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products);

// make collection from single element
$collection = PhpCollection:collect($products[0], true);

implode($array = ", ", $serializer = "") OR join($array = ", ", $serializer = "")

$collection = PhpCollection:collect([100, "data", 300, 400])->implode();
/*
    100, data, 300, 400
*/

$products = [
    ["id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
];

// should return string
$serializer = function($item){
    return "{$item['name']}-{$item['price']}$"; // or for example -- return json_encode($item);
};

$collection = PhpCollection:collect($products)->implode(", ", $serializer);
/*
    product 1-100$, product 2-200$, product 3-300$
*/

pluck($key)

$products = [
    ["id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products)->pluck("id")->all();
/*
    [1, 2, 3]
*/  

$collection = PhpCollection:collect($products)->pluck("name")->all();
/*
    ["product 1", "product 2", "product 3"]
*/

only($keys)

$products = [
    ["id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products)->only(["id", "name"])->all();
/*
[
    ["id" => 1, "name" => "product 1"],
    ["id" => 2, "name" => "product 2"],
    ["id" => 3, "name" => "product 3"]
]
*/

$collection = PhpCollection:collect($products)->only(["id", "name" => "title"])->all();

/*
[
    ["id" => 1, "title" => "product 1"],
    ["id" => 2, "title" => "product 2"],
    ["id" => 3, "title" => "product 3"]
]
*/

exclude($keys)

$products = [
    ["id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products)->exclude(["name"])->all();

/*
[
    ["id" => 1, "price" => 100],
    ["id" => 2, "price" => 200],
    ["id" => 3, "price" => 300]
]
*/

filter(function($item))

$products = [
    ["id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products)
    ->filter(function($item){
        return $item["price"] > 100    
    })
    ->all();

/*
[
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
]
*/

map(function($item))

$products = [
    ["id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 3, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products)
    ->map(function($item){
        $item["pricex2"] = $item["price"] * 2;
        return $item;   
    })
    ->all();

/*
[
    ["id" => 1, "name" => "product 1", "price" => 100, "pricex2" => 200],
    ["id" => 2, "name" => "product 2", "price" => 200, "pricex2" => 400],
    ["id" => 3, "name" => "product 3", "price" => 300, "pricex2" => 600]
]
*/

keyBy($key | function($item))

$products = [
    ["id" => 16, "name" => "product 1", "price" => 100],
    ["id" => 22, "name" => "product 2", "price" => 200],
    ["id" => 31, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products)->keyBy("id")->all();

/*
[
    16 => ["id" => 1, "name" => "product 1", "price" => 100, "pricex2" => 200],
    22 => ["id" => 2, "name" => "product 2", "price" => 200, "pricex2" => 400],
    31 => ["id" => 3, "name" => "product 3", "price" => 300, "pricex2" => 600]
]
*/

groupBy($key | function($item))

$products = [
    ["id" => 16, "category_id" => 1, "name" => "product 1", "price" => 100],
    ["id" => 22, "category_id" => 2, "name" => "product 2", "price" => 200],
    ["id" => 31, "category_id" => 2, "name" => "product 3", "price" => 300]
];

$collection = PhpCollection:collect($products)->groupBy("category_id")->all();

/*
[
    1 => [
        ["id" => 16, "category_id" => 1, "name" => "product 1", "price" => 100]
    ],
    2 => [
        ["id" => 22, "category_id" => 2, "name" => "product 2", "price" => 200],
        ["id" => 31, "category_id" => 2, "name" => "product 3", "price" => 300]
    ]   
]
*/

find(function($item))

some($value | function($item)) OR contains($value | function($item))

every(function($item))

sort(function($item))

sortBy($key, $asc = true)

values()

first()

last()

count()

all() OR toArray()

toJson()

zip()

TODO

dumpBrowser()

dump()

toCsv()

toXml()

shuffle()

random()

chunk()

unique("" | $key | function($item))

collapse()

diff($array)

has($key)

flip()

min("" | $key | function($item))

max("" | $key | function($item))

reduce($function)