PHP code example of yii2mod / collection

1. Go to this page and download the library: Download yii2mod/collection library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

yii2mod / collection example snippets


$collection = new Collection([1, 2, 3]);

// or via `make` function

$collection = Collection::make([1, 2, 3]);


$collection = new Collection([1, 2, 3]);
$collection->all();
// [1, 2, 3]


$collection = new Collection([1, 2, 3, 4, 5]);
$collection->avg();
// 3


$collection = new Collection([
    ['id' => 1, 'price' => 150],
    ['id' => 2, 'price' => 250],
]);

$collection->avg('price');

// 200


$collection = new Collection([1, 2, 3, 4, 5, 6, 7]);

$chunks = $collection->chunk(4);

$chunks->toArray();

// [[1, 2, 3, 4], [5, 6, 7]]


$collection = new Collection([[1, 2, 3], [4, 5, 6], [7, 8, 9]]);

$collapsed = $collection->collapse();

$collapsed->all();

// [1, 2, 3, 4, 5, 6, 7, 8, 9]


$collection = new Collection(['name', 'age']);

$combined = $collection->combine(['George', 29]);

$combined->all();

// ['name' => 'George', 'age' => 29]


$collection = new Collection(['city' => 'Alabama', 'country' => 'USA']);

$collection->contains('Alabama');

// true

$collection->contains('New York');

// false


$collection = new Collection([
            ['city' => 'Alabama'],
            ['city' => 'New York']
        ]);

$collection->contains('city', 'New York');

// true


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->count();

// 5


$collection = new Collection([1, 2, 3, 4, 5]);

$diff = $collection->diff([2, 4, 6, 8]);

$diff->all();

// [1, 3, 5]


$collection = $collection->each(function ($item, $key) {
    if (/* some condition */) {
        return false;
    }
});


$collection = new Collection(['a', 'b', 'c', 'd', 'e', 'f']);

$collection->every(4);

// ['a', 'e']


$collection->every(4, 1);

// ['b', 'f']


$collection = new Collection(['id' => 1, 'name' => 'Desk', 'price' => 100, 'discount' => false]);

$filtered = $collection->except(['price', 'discount']);

$filtered->all();

// ['id' => 1, 'name' => 'Desk']


$collection = new Collection([1, 2, 3, 4]);

$filtered = $collection->filter(function ($value, $key) {
    return $value > 2;
});

$filtered->all();

// [3, 4]


Collection::make([1, 2, 3, 4])->first(function ($key, $value) {
    return $value > 2;
});

// 3


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->first();

// 1


Collection::make([1, 2, 3, 4])->last(function ($key, $value) {
    return $value > 2;
});

// 4


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->last();

// 5


$collection = new Collection(['language' => 'java', 'languages' => ['php', 'javascript']]);

$collection->flatten();

// ['java', 'php', 'javascript']


$collection = new Collection(['firstName' => 'Igor', 'lastName' => 'Chepurnoy']);

$collection->flip();

// ['Igor' => 'firstName', 'Chepurnoy' => 'lastName']


$collection = new Collection(['firstName' => 'Igor', 'lastName' => 'Chepurnoy']);

$collection->forget('firstName');

$collection->all();

// ['lastName' => 'Chepurnoy']


$collection = new Collection([1, 2, 3, 4, 5, 6, 7, 8, 9]);

$chunk = $collection->forPage(2, 3);

$chunk->all();

// [4, 5, 6]


$collection = new Collection([
'User' => [
    'identity' => [
        'id' => 1
    ]
]
]);

$collection->get('User.identity.id');

// 1


$collection->get('User.identity.email', false);

// false


$collection = new Collection([
     ['id' => 'id_2', 'name' => 'Bob'],
     ['id' => 'id_2', 'name' => 'John'],
     ['id' => 'id_3', 'name' => 'Frank'],
]);

$grouped = $collection->groupBy('id');

$grouped->toArray();

/*
[
    'id_2' => [
        ['id' => 'id_2', 'name' => 'Bob'],
        ['id' => 'id_2', 'name' => 'John'],
    ],
    'id_3' => [
        ['id' => 'id_3', 'name' => 'Frank'],
    ],
]
*/


$grouped = $collection->groupBy(function ($item, $key) {
    return substr($item['id'], -2);
});

/*
[
    '_2' => [
        ['id' => 'id_2', 'name' => 'Bob'],
        ['id' => 'id_2', 'name' => 'John'],
    ],
    '_3' => [
        ['id' => 'id_3', 'name' => 'Frank'],
    ],
]
*/


$collection = new Collection(['id' => 1, 'name' => 'Igor']);

$collection->has('id');

// true

$collection->has('email');

// false


$collection = new Collection([
    ['account_id' => 1, 'name' => 'Ben'],
    ['account_id' => 2, 'name' => 'Bob'],
]);

$collection->implode('name', ', ');

// Ben, Bob


Collection::make(['Ben', 'Bob'])->implode(' and ')

// Ben and Bob


$collection = new Collection(['php', 'python', 'ruby']);

$intersect = $collection->intersect(['python', 'ruby', 'javascript']);

$intersect->all();

// [1 => 'python', 2 => 'ruby']


$collection = (new Collection([]))->isEmpty();

// true


$collection = (new Collection([]))->isNotEmpty();

// false


$collection = new Collection([
    ['product_id' => '100', 'name' => 'desk'],
    ['product_id' => '200', 'name' => 'chair'],
]);

$keyed = $collection->keyBy('product_id');

$keyed->all();

/*
  [
     '100' => ['product_id' => '100', 'name' => 'desk'],
     '200' => ['product_id' => '200', 'name' => 'chair'],
  ]
*/


$collection = new Collection([
    ['product_id' => '100', 'name' => 'desk'],
    ['product_id' => '200', 'name' => 'chair'],
]);

$keyed = $collection->keyBy(function ($item) {
    return strtoupper($item['name']);
});

$keyed->all();

/*
  [
    'DESK' => ['product_id' => '100', 'name' => 'desk'],
    'CHAIR' => ['product_id' => '200', 'name' => 'chair'],
  ]
*/


$collection = new Collection([
    'city' => 'New York',
    'country' => 'USA'
]);

$collection->keys();

// ['city', 'country']


$collection = new Collection([1, 2, 3, 4, 5]);

$multiplied = $collection->map(function ($item, $key) {
    return $item * 2;
});

$multiplied->all();

// [2, 4, 6, 8, 10]


$collection = new Collection([['foo' => 10], ['foo' => 20]]);
$max = $collection->max('foo');

// 20

$collection = new Collection([1, 2, 3, 4, 5]);
$max = $collection->max();

// 5


$collection = new Collection(['product_id' => 1, 'name' => 'Desk']);

$merged = $collection->merge(['price' => 100, 'discount' => false]);

$merged->all();

// ['product_id' => 1, 'name' => 'Desk', 'price' => 100, 'discount' => false]


$collection = new Collection([['foo' => 10], ['foo' => 20]]);
$min = $collection->min('foo');

// 10

$collection = new Collection([1, 2, 3, 4, 5]);
$min = $collection->min();

// 1


$collection = new Collection(['product_id' => 1, 'name' => 'Desk', 'price' => 100, 'discount' => false]);

$filtered = $collection->only(['product_id', 'name']);

$filtered->all();

// ['product_id' => 1, 'name' => 'Desk']


$collection = new Collection([
    ['product_id' => 'prod-100', 'name' => 'Desk'],
    ['product_id' => 'prod-200', 'name' => 'Chair'],
]);

$plucked = $collection->pluck('name');

$plucked->all();

// ['Desk', 'Chair']


$plucked = $collection->pluck('name', 'product_id');

$plucked->all();

// ['prod-100' => 'Desk', 'prod-200' => 'Chair']


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->pop();
// 5

$collection->all();

// [1, 2, 3, 4]


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->prepend(0);

$collection->all();

// [0, 1, 2, 3, 4, 5]


$collection = Collection::make(['one' => 1, 'two' => 2]);

$collection->prepend(0, 'zero');

$collection->all();

// ['zero' => 0, 'one' => 1, 'two', => 2]


$collection = new Collection(['product_id' => 'prod-100', 'name' => 'Desk']);

$collection->pull('name');

// 'Desk'

$collection->all();

// ['product_id' => 'prod-100']


$collection = new Collection([1, 2, 3, 4]);

$collection->push(5);

$collection->all();

// [1, 2, 3, 4, 5]


$collection = new Collection(['product_id' => 1, 'name' => 'Desk']);

$collection->put('price', 100);

$collection->all();

// ['product_id' => 1, 'name' => 'Desk', 'price' => 100]


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->random();

// 4 - (retrieved randomly)


$random = $collection->random(3);

$random->all();

// [2, 4, 5] - (retrieved randomly)


$collection = new Collection([1, 2, 3]);

$total = $collection->reduce(function ($carry, $item) {
    return $carry + $item;
});

// 6


$collection->reduce(function ($carry, $item) {
    return $carry + $item;
}, 4);

// 10


$collection = new Collection([1, 2, 3, 4]);

$filtered = $collection->reject(function ($value, $key) {
    return $value > 2;
});

$filtered->all();

// [1, 2]


$collection = new Collection([1, 2, 3, 4, 5]);

$reversed = $collection->reverse();

$reversed->all();

// [5, 4, 3, 2, 1]


$collection = new Collection([2, 4, 6, 8]);

$collection->search(4);

// 1


$collection->search('4', true);

// false


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->shift();

// 1

$collection->all();

// [2, 3, 4, 5]


$collection = new Collection([1, 2, 3, 4, 5]);

$shuffled = $collection->shuffle();

$shuffled->all();

// [3, 2, 5, 1, 4] // (generated randomly)


$collection = new Collection([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);

$slice = $collection->slice(4);

$slice->all();

// [5, 6, 7, 8, 9, 10]


$slice = $collection->slice(4, 2);

$slice->all();

// [5, 6]


$collection = new Collection([5, 3, 1, 2, 4]);

$sorted = $collection->sort();

$sorted->values()->all();

// [1, 2, 3, 4, 5]


$collection = new Collection([
    ['name' => 'Desk', 'price' => 200],
    ['name' => 'Chair', 'price' => 100],
    ['name' => 'Bookcase', 'price' => 150],
]);

$sorted = $collection->sortBy('price');

$sorted->values()->all();

/*
    [
        ['name' => 'Chair', 'price' => 100],
        ['name' => 'Bookcase', 'price' => 150],
        ['name' => 'Desk', 'price' => 200],
    ]
*/


$collection = new Collection([
    ['name' => 'Desk', 'colors' => ['Black', 'Mahogany']],
    ['name' => 'Chair', 'colors' => ['Black']],
    ['name' => 'Bookcase', 'colors' => ['Red', 'Beige', 'Brown']],
]);

$sorted = $collection->sortBy(function ($product, $key) {
    return count($product['colors']);
});

$sorted->values()->all();

/*
    [
        ['name' => 'Chair', 'colors' => ['Black']],
        ['name' => 'Desk', 'colors' => ['Black', 'Mahogany']],
        ['name' => 'Bookcase', 'colors' => ['Red', 'Beige', 'Brown']],
    ]
*/


$collection = new Collection([1, 2, 3, 4, 5]);

$chunk = $collection->splice(2);

$chunk->all();

// [3, 4, 5]

$collection->all();

// [1, 2]


$collection = new Collection([1, 2, 3, 4, 5]);

$chunk = $collection->splice(2, 1);

$chunk->all();

// [3]

$collection->all();

// [1, 2, 4, 5]


$collection = new Collection([1, 2, 3, 4, 5]);

$chunk = $collection->splice(2, 1, [10, 11]);

$chunk->all();

// [3]

$collection->all();

// [1, 2, 10, 11, 4, 5]


$collection = new Collection([1, 2, 3]);
        
$collection->sum();

// 6


$collection = new Collection([
    ['name' => 'Books', 'countOfProduct' => 100],
    ['name' => 'Chairs', 'countOfProduct' => 200],
]);

$collection->sum('countOfProduct');

// 300


$collection = new Collection([
    ['name' => 'Chair', 'colors' => ['Black']],
    ['name' => 'Desk', 'colors' => ['Black', 'Mahogany']],
    ['name' => 'Bookcase', 'colors' => ['Red', 'Beige', 'Brown']],
]);

$collection->sum(function ($product) {
    return count($product['colors']);
});

// 6


$collection = new Collection([0, 1, 2, 3, 4, 5]);

$chunk = $collection->take(3);

$chunk->all();

// [0, 1, 2]


$collection = new Collection([0, 1, 2, 3, 4, 5]);

$chunk = $collection->take(-2);

$chunk->all();

// [4, 5]


$collection = new Collection('name');

$collection->toArray();

/*
    ['name']
*/


$collection = new Collection([2, 4, 3, 1, 5]);
$result = $collection->sort()
    ->tap(function ($collection) {
        // Values after sorting
        var_dump($collection->values()->toArray());
    })
    ->shift();
// 1


$collection = new Collection(['name' => 'Desk', 'price' => 200]);

$collection->toJson();

// '{"name":"Desk","price":200}'


$collection = new Collection([1, 2, 3, 4, 5]);

$collection->transform(function ($item, $key) {
    return $item * 2;
});

$collection->all();

// [2, 4, 6, 8, 10]


$collection = new Collection([1, 1, 2, 2, 3, 4, 2]);

$unique = $collection->unique();

$unique->values()->all();

// [1, 2, 3, 4]


$collection = new Collection([
    ['name' => 'iPhone 6', 'brand' => 'Apple', 'type' => 'phone'],
    ['name' => 'iPhone 5', 'brand' => 'Apple', 'type' => 'phone'],
    ['name' => 'Apple Watch', 'brand' => 'Apple', 'type' => 'watch'],
    ['name' => 'Galaxy S6', 'brand' => 'Samsung', 'type' => 'phone'],
    ['name' => 'Galaxy Gear', 'brand' => 'Samsung', 'type' => 'watch'],
]);

$unique = $collection->unique('brand');

$unique->values()->all();

/*
    [
        ['name' => 'iPhone 6', 'brand' => 'Apple', 'type' => 'phone'],
        ['name' => 'Galaxy S6', 'brand' => 'Samsung', 'type' => 'phone'],
    ]
*/


$unique = $collection->unique(function ($item) {
    return $item['brand'].$item['type'];
});

$unique->values()->all();

/*
    [
        ['name' => 'iPhone 6', 'brand' => 'Apple', 'type' => 'phone'],
        ['name' => 'Apple Watch', 'brand' => 'Apple', 'type' => 'watch'],
        ['name' => 'Galaxy S6', 'brand' => 'Samsung', 'type' => 'phone'],
        ['name' => 'Galaxy Gear', 'brand' => 'Samsung', 'type' => 'watch'],
    ]
*/


$collection = new Collection([
    10 => ['product' => 'Desk', 'price' => 200],
    11 => ['product' => 'Desk', 'price' => 200]
]);

$values = $collection->values();

$values->all();

/*
    [
        0 => ['product' => 'Desk', 'price' => 200],
        1 => ['product' => 'Desk', 'price' => 200],
    ]
*/


$collection = new Collection([
    ['product' => 'Desk', 'price' => 200],
    ['product' => 'Chair', 'price' => 100],
    ['product' => 'Bookcase', 'price' => 150],
    ['product' => 'Door', 'price' => 100],
]);

$filtered = $collection->where('price', 100);

$filtered->all();

/*
  [
     ['product' => 'Chair', 'price' => 100],
     ['product' => 'Door', 'price' => 100],
  ]
*/


$collection = new Collection([
    ['product' => 'Desk', 'price' => 200],
    ['product' => 'Chair', 'price' => 100],
    ['product' => 'Bookcase', 'price' => 150],
    ['product' => 'Door', 'price' => 100],
]);

$filtered = $collection->whereIn('price', [150, 200]);

$filtered->all();

/*
   [
      ['product' => 'Bookcase', 'price' => 150],
      ['product' => 'Desk', 'price' => 200],
   ]
*/


$collection = new Collection(['Chair', 'Desk']);

$zipped = $collection->zip([100, 200]);

$zipped->all();

// [['Chair', 100], ['Desk', 200]]

implode()

merge()

put()