Collection.php
TLDR
The Collection.php file in the Illuminate\Support namespace contains a class called Collection. This class represents a collection of items and provides various methods for working with those items.
Methods
range
Creates a new collection with a range of integers starting from a given number and ending at another given number.
all
Returns all of the items in the collection.
lazy
Returns a lazy collection for the items in this collection. A lazy collection allows for deferred execution of operations on the collection.
avg
Calculates the average value of a given key in the collection.
median
Calculates the median value of a given key in the collection.
mode
Calculates the mode (the value(s) that appear most frequently) of a given key in the collection.
collapse
Collapses a multi-dimensional collection into a single array.
contains
Determines if an item exists in the collection.
containsStrict
Determines if an item exists in the collection using strict comparison.
doesntContain
Determines if an item is not contained in the collection.
crossJoin
Performs a cross join with the given lists, returning all possible permutations.
diff
Returns the items in the collection that are not present in the given items.
diffUsing
Returns the items in the collection that are not present in the given items, using a callback function for comparison.
diffAssoc
Returns the items in the collection whose keys and values are not present in the given items.
diffAssocUsing
Returns the items in the collection whose keys and values are not present in the given items, using a callback function for comparison.
diffKeys
Returns the items in the collection whose keys are not present in the given items.
diffKeysUsing
Returns the items in the collection whose keys are not present in the given items, using a callback function for comparison.
duplicates
Retrieves the duplicate items from the collection.
duplicatesStrict
Retrieves the duplicate items from the collection using strict comparison.
except
Returns all items except for those with the specified keys.
filter
Filters the collection using a callback function.
first
Returns the first item from the collection that matches the given condition.
flatten
Flattens a multi-dimensional collection into a single array.
flip
Flips the keys and values of the collection.
forget
Removes an item from the collection by key.
get
Gets an item from the collection by key.
getOrPut
Gets an item from the collection by key or adds it to the collection if it does not exist.
groupBy
Groups the collection by a field or using a callback function.
keyBy
Keys the collection by a field or using a callback function.
has
Determines if an item exists in the collection by key.
hasAny
Determines if any of the keys exist in the collection.
implode
Concatenates the values of a given key as a string.
intersect
Returns the intersection of the collection and the given items.
intersectUsing
Returns the intersection of the collection and the given items, using a callback function for comparison.
intersectAssoc
Returns the intersection of the collection and the given items with additional index check.
intersectAssocUsing
Returns the intersection of the collection and the given items with additional index check, using a callback function for comparison.
intersectByKeys
Returns the intersection of the collection and the given items by key.
isEmpty
Determines if the collection is empty.
containsOneItem
Determines if the collection contains only one item.
join
Joins all items from the collection using a string.
keys
Retrieves the keys of the collection items.
last
Returns the last item from the collection that matches the given condition.
pluck
Gets the values of a given key from the collection.
map
Applies a callback function to each item in the collection and returns the result.
mapToDictionary
Applies a dictionary map function to the collection items.
mapWithKeys
Applies an associative map function to the collection items.
merge
Merges the collection with the given items.
mergeRecursive
Recursively merges the collection with the given items.
combine
Creates a new collection by using this collection for keys and another for its values.
union
Creates a new collection consisting of the items from both the collection and the given items.
nth
Creates a new collection with every n-th element from the current collection.
only
Returns only the items from the collection with the specified keys.
pop
Removes and returns the last item(s) from the collection.
prepend
Adds an item to the beginning of the collection.
push
Adds one or more items to the end of the collection.
concat
Adds all of the given items to the collection.
pull
Removes and returns an item from the collection by key.
put
Puts an item in the collection by key.
random
Returns one or a specified number of random items from the collection.
replace
Replaces the items in the collection with the given items.
replaceRecursive
Recursively replaces the items in the collection with the given items.
reverse
Reverses the order of the items in the collection.
search
Searches the collection for a given value and returns the corresponding key if found.
shift
Removes and returns the first item(s) from the collection.
shuffle
Shuffles the items in the collection.
sliding
Creates chunks representing a "sliding window" view of the items in the collection.
skip
Skips the first n items in the collection.
skipUntil
Skips items in the collection until the given condition is met.
skipWhile
Skips items in the collection while the given condition is met.
slice
Returns a slice of the collection starting from a given offset and with an optional length.
split
Splits the collection into a certain number of groups.
splitIn
Splits the collection into a certain number of groups, filling the first groups completely.
sole
Returns the first item in the collection if exactly one matching item exists, otherwise throws an exception.
firstOrFail
Returns the first item in the collection or throws an exception if no matching items exist.
chunk
Splits the collection into chunks of a given size.
chunkWhile
Chunks the collection into chunks with a given callback.
sort
Sorts the collection in ascending order.
sortDesc
Sorts the collection in descending order.
sortBy
Sorts the collection using a callback function.
sortByDesc
Sorts the collection in descending order using a callback function.
sortKeys
Sorts the collection keys in ascending order.
sortKeysDesc
Sorts the collection keys in descending order.
sortKeysUsing
Sorts the collection keys using a callback function.
splice
Removes and returns a portion of the collection.
take
Returns the first or last n items from the collection.
takeUntil
Returns items from the collection until the given condition is met.
takeWhile
Returns items from the collection while the given condition is met.
transform
Applies a callback function to each item in the collection and updates the items.
dot
Flattens a multi-dimensional collection into a single array with dot notation.
undot
Expands a flatten "dot" notation array into an associative array.
unique
Returns only the unique items from the collection.
values
Resets the keys on the collection to consecutive integers.
zip
Zips the collection together with one or more arrays.
pad
Pads the collection to a specified length with a value.
getIterator
Returns an iterator for the items in the collection.
count
Returns the number of items in the collection.
countBy
Returns the number of items in the collection by a field or using a callback function.
add
Adds an item to the collection.
toBase
Returns a base Support collection instance from this collection.
offsetExists
Determines if an item exists at a given offset.
offsetGet
Gets an item at a given offset.
offsetSet
Sets the item at a given offset.
offsetUnset
Unsets the item at a given offset.
Classes
None
<?php
namespace Illuminate\Support;
use ArrayAccess;
use ArrayIterator;
use Illuminate\Contracts\Support\CanBeEscapedWhenCastToString;
use Illuminate\Support\Traits\EnumeratesValues;
use Illuminate\Support\Traits\Macroable;
use stdClass;
use Traversable;
/**
* @template TKey of array-key
*
* @template-covariant TValue
*
* @implements \ArrayAccess<TKey, TValue>
* @implements \Illuminate\Support\Enumerable<TKey, TValue>
*/
class Collection implements ArrayAccess, CanBeEscapedWhenCastToString, Enumerable
{
/**
* @use \Illuminate\Support\Traits\EnumeratesValues<TKey, TValue>
*/
use EnumeratesValues, Macroable;
/**
* The items contained in the collection.
*
* @var array<TKey, TValue>
*/
protected $items = [];
/**
* Create a new collection.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue>|null $items
* @return void
*/
public function __construct($items = [])
{
$this->items = $this->getArrayableItems($items);
}
/**
* Create a collection with the given range.
*
* @param int $from
* @param int $to
* @return static<int, int>
*/
public static function range($from, $to)
{
return new static(range($from, $to));
}
/**
* Get all of the items in the collection.
*
* @return array<TKey, TValue>
*/
public function all()
{
return $this->items;
}
/**
* Get a lazy collection for the items in this collection.
*
* @return \Illuminate\Support\LazyCollection<TKey, TValue>
*/
public function lazy()
{
return new LazyCollection($this->items);
}
/**
* Get the average value of a given key.
*
* @param (callable(TValue): float|int)|string|null $callback
* @return float|int|null
*/
public function avg($callback = null)
{
$callback = $this->valueRetriever($callback);
$items = $this
->map(fn ($value) => $callback($value))
->filter(fn ($value) => ! is_null($value));
if ($count = $items->count()) {
return $items->sum() / $count;
}
}
/**
* Get the median of a given key.
*
* @param string|array<array-key, string>|null $key
* @return float|int|null
*/
public function median($key = null)
{
$values = (isset($key) ? $this->pluck($key) : $this)
->filter(fn ($item) => ! is_null($item))
->sort()->values();
$count = $values->count();
if ($count === 0) {
return;
}
$middle = (int) ($count / 2);
if ($count % 2) {
return $values->get($middle);
}
return (new static([
$values->get($middle - 1), $values->get($middle),
]))->average();
}
/**
* Get the mode of a given key.
*
* @param string|array<array-key, string>|null $key
* @return array<int, float|int>|null
*/
public function mode($key = null)
{
if ($this->count() === 0) {
return;
}
$collection = isset($key) ? $this->pluck($key) : $this;
$counts = new static;
$collection->each(fn ($value) => $counts[$value] = isset($counts[$value]) ? $counts[$value] + 1 : 1);
$sorted = $counts->sort();
$highestValue = $sorted->last();
return $sorted->filter(fn ($value) => $value == $highestValue)
->sort()->keys()->all();
}
/**
* Collapse the collection of items into a single array.
*
* @return static<int, mixed>
*/
public function collapse()
{
return new static(Arr::collapse($this->items));
}
/**
* Determine if an item exists in the collection.
*
* @param (callable(TValue, TKey): bool)|TValue|string $key
* @param mixed $operator
* @param mixed $value
* @return bool
*/
public function contains($key, $operator = null, $value = null)
{
if (func_num_args() === 1) {
if ($this->useAsCallable($key)) {
$placeholder = new stdClass;
return $this->first($key, $placeholder) !== $placeholder;
}
return in_array($key, $this->items);
}
return $this->contains($this->operatorForWhere(...func_get_args()));
}
/**
* Determine if an item exists, using strict comparison.
*
* @param (callable(TValue): bool)|TValue|array-key $key
* @param TValue|null $value
* @return bool
*/
public function containsStrict($key, $value = null)
{
if (func_num_args() === 2) {
return $this->contains(fn ($item) => data_get($item, $key) === $value);
}
if ($this->useAsCallable($key)) {
return ! is_null($this->first($key));
}
return in_array($key, $this->items, true);
}
/**
* Determine if an item is not contained in the collection.
*
* @param mixed $key
* @param mixed $operator
* @param mixed $value
* @return bool
*/
public function doesntContain($key, $operator = null, $value = null)
{
return ! $this->contains(...func_get_args());
}
/**
* Cross join with the given lists, returning all possible permutations.
*
* @template TCrossJoinKey
* @template TCrossJoinValue
*
* @param \Illuminate\Contracts\Support\Arrayable<TCrossJoinKey, TCrossJoinValue>|iterable<TCrossJoinKey, TCrossJoinValue> ...$lists
* @return static<int, array<int, TValue|TCrossJoinValue>>
*/
public function crossJoin(...$lists)
{
return new static(Arr::crossJoin(
$this->items, ...array_map([$this, 'getArrayableItems'], $lists)
));
}
/**
* Get the items in the collection that are not present in the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<array-key, TValue>|iterable<array-key, TValue> $items
* @return static
*/
public function diff($items)
{
return new static(array_diff($this->items, $this->getArrayableItems($items)));
}
/**
* Get the items in the collection that are not present in the given items, using the callback.
*
* @param \Illuminate\Contracts\Support\Arrayable<array-key, TValue>|iterable<array-key, TValue> $items
* @param callable(TValue, TValue): int $callback
* @return static
*/
public function diffUsing($items, callable $callback)
{
return new static(array_udiff($this->items, $this->getArrayableItems($items), $callback));
}
/**
* Get the items in the collection whose keys and values are not present in the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function diffAssoc($items)
{
return new static(array_diff_assoc($this->items, $this->getArrayableItems($items)));
}
/**
* Get the items in the collection whose keys and values are not present in the given items, using the callback.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @param callable(TKey, TKey): int $callback
* @return static
*/
public function diffAssocUsing($items, callable $callback)
{
return new static(array_diff_uassoc($this->items, $this->getArrayableItems($items), $callback));
}
/**
* Get the items in the collection whose keys are not present in the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function diffKeys($items)
{
return new static(array_diff_key($this->items, $this->getArrayableItems($items)));
}
/**
* Get the items in the collection whose keys are not present in the given items, using the callback.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @param callable(TKey, TKey): int $callback
* @return static
*/
public function diffKeysUsing($items, callable $callback)
{
return new static(array_diff_ukey($this->items, $this->getArrayableItems($items), $callback));
}
/**
* Retrieve duplicate items from the collection.
*
* @param (callable(TValue): bool)|string|null $callback
* @param bool $strict
* @return static
*/
public function duplicates($callback = null, $strict = false)
{
$items = $this->map($this->valueRetriever($callback));
$uniqueItems = $items->unique(null, $strict);
$compare = $this->duplicateComparator($strict);
$duplicates = new static;
foreach ($items as $key => $value) {
if ($uniqueItems->isNotEmpty() && $compare($value, $uniqueItems->first())) {
$uniqueItems->shift();
} else {
$duplicates[$key] = $value;
}
}
return $duplicates;
}
/**
* Retrieve duplicate items from the collection using strict comparison.
*
* @param (callable(TValue): bool)|string|null $callback
* @return static
*/
public function duplicatesStrict($callback = null)
{
return $this->duplicates($callback, true);
}
/**
* Get the comparison function to detect duplicates.
*
* @param bool $strict
* @return callable(TValue, TValue): bool
*/
protected function duplicateComparator($strict)
{
if ($strict) {
return fn ($a, $b) => $a === $b;
}
return fn ($a, $b) => $a == $b;
}
/**
* Get all items except for those with the specified keys.
*
* @param \Illuminate\Support\Enumerable<array-key, TKey>|array<array-key, TKey>|string $keys
* @return static
*/
public function except($keys)
{
if (is_null($keys)) {
return new static($this->items);
}
if ($keys instanceof Enumerable) {
$keys = $keys->all();
} elseif (! is_array($keys)) {
$keys = func_get_args();
}
return new static(Arr::except($this->items, $keys));
}
/**
* Run a filter over each of the items.
*
* @param (callable(TValue, TKey): bool)|null $callback
* @return static
*/
public function filter(callable $callback = null)
{
if ($callback) {
return new static(Arr::where($this->items, $callback));
}
return new static(array_filter($this->items));
}
/**
* Get the first item from the collection passing the given truth test.
*
* @template TFirstDefault
*
* @param (callable(TValue, TKey): bool)|null $callback
* @param TFirstDefault|(\Closure(): TFirstDefault) $default
* @return TValue|TFirstDefault
*/
public function first(callable $callback = null, $default = null)
{
return Arr::first($this->items, $callback, $default);
}
/**
* Get a flattened array of the items in the collection.
*
* @param int $depth
* @return static<int, mixed>
*/
public function flatten($depth = INF)
{
return new static(Arr::flatten($this->items, $depth));
}
/**
* Flip the items in the collection.
*
* @return static<TValue, TKey>
*/
public function flip()
{
return new static(array_flip($this->items));
}
/**
* Remove an item from the collection by key.
*
* \Illuminate\Contracts\Support\Arrayable<array-key, TValue>|iterable<array-key, TKey>|TKey $keys
*
* @return $this
*/
public function forget($keys)
{
foreach ($this->getArrayableItems($keys) as $key) {
$this->offsetUnset($key);
}
return $this;
}
/**
* Get an item from the collection by key.
*
* @template TGetDefault
*
* @param TKey $key
* @param TGetDefault|(\Closure(): TGetDefault) $default
* @return TValue|TGetDefault
*/
public function get($key, $default = null)
{
if (array_key_exists($key, $this->items)) {
return $this->items[$key];
}
return value($default);
}
/**
* Get an item from the collection by key or add it to collection if it does not exist.
*
* @template TGetOrPutValue
*
* @param mixed $key
* @param TGetOrPutValue|(\Closure(): TGetOrPutValue) $value
* @return TValue|TGetOrPutValue
*/
public function getOrPut($key, $value)
{
if (array_key_exists($key, $this->items)) {
return $this->items[$key];
}
$this->offsetSet($key, $value = value($value));
return $value;
}
/**
* Group an associative array by a field or using a callback.
*
* @param (callable(TValue, TKey): array-key)|array|string $groupBy
* @param bool $preserveKeys
* @return static<array-key, static<array-key, TValue>>
*/
public function groupBy($groupBy, $preserveKeys = false)
{
if (! $this->useAsCallable($groupBy) && is_array($groupBy)) {
$nextGroups = $groupBy;
$groupBy = array_shift($nextGroups);
}
$groupBy = $this->valueRetriever($groupBy);
$results = [];
foreach ($this->items as $key => $value) {
$groupKeys = $groupBy($value, $key);
if (! is_array($groupKeys)) {
$groupKeys = [$groupKeys];
}
foreach ($groupKeys as $groupKey) {
$groupKey = match (true) {
is_bool($groupKey) => (int) $groupKey,
$groupKey instanceof \BackedEnum => $groupKey->value,
$groupKey instanceof \Stringable => (string) $groupKey,
default => $groupKey,
};
if (! array_key_exists($groupKey, $results)) {
$results[$groupKey] = new static;
}
$results[$groupKey]->offsetSet($preserveKeys ? $key : null, $value);
}
}
$result = new static($results);
if (! empty($nextGroups)) {
return $result->map->groupBy($nextGroups, $preserveKeys);
}
return $result;
}
/**
* Key an associative array by a field or using a callback.
*
* @param (callable(TValue, TKey): array-key)|array|string $keyBy
* @return static<array-key, TValue>
*/
public function keyBy($keyBy)
{
$keyBy = $this->valueRetriever($keyBy);
$results = [];
foreach ($this->items as $key => $item) {
$resolvedKey = $keyBy($item, $key);
if (is_object($resolvedKey)) {
$resolvedKey = (string) $resolvedKey;
}
$results[$resolvedKey] = $item;
}
return new static($results);
}
/**
* Determine if an item exists in the collection by key.
*
* @param TKey|array<array-key, TKey> $key
* @return bool
*/
public function has($key)
{
$keys = is_array($key) ? $key : func_get_args();
foreach ($keys as $value) {
if (! array_key_exists($value, $this->items)) {
return false;
}
}
return true;
}
/**
* Determine if any of the keys exist in the collection.
*
* @param mixed $key
* @return bool
*/
public function hasAny($key)
{
if ($this->isEmpty()) {
return false;
}
$keys = is_array($key) ? $key : func_get_args();
foreach ($keys as $value) {
if ($this->has($value)) {
return true;
}
}
return false;
}
/**
* Concatenate values of a given key as a string.
*
* @param callable|string $value
* @param string|null $glue
* @return string
*/
public function implode($value, $glue = null)
{
if ($this->useAsCallable($value)) {
return implode($glue ?? '', $this->map($value)->all());
}
$first = $this->first();
if (is_array($first) || (is_object($first) && ! $first instanceof Stringable)) {
return implode($glue ?? '', $this->pluck($value)->all());
}
return implode($value ?? '', $this->items);
}
/**
* Intersect the collection with the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function intersect($items)
{
return new static(array_intersect($this->items, $this->getArrayableItems($items)));
}
/**
* Intersect the collection with the given items, using the callback.
*
* @param \Illuminate\Contracts\Support\Arrayable<array-key, TValue>|iterable<array-key, TValue> $items
* @param callable(TValue, TValue): int $callback
* @return static
*/
public function intersectUsing($items, callable $callback)
{
return new static(array_uintersect($this->items, $this->getArrayableItems($items), $callback));
}
/**
* Intersect the collection with the given items with additional index check.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function intersectAssoc($items)
{
return new static(array_intersect_assoc($this->items, $this->getArrayableItems($items)));
}
/**
* Intersect the collection with the given items with additional index check, using the callback.
*
* @param \Illuminate\Contracts\Support\Arrayable<array-key, TValue>|iterable<array-key, TValue> $items
* @param callable(TValue, TValue): int $callback
* @return static
*/
public function intersectAssocUsing($items, callable $callback)
{
return new static(array_intersect_uassoc($this->items, $this->getArrayableItems($items), $callback));
}
/**
* Intersect the collection with the given items by key.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function intersectByKeys($items)
{
return new static(array_intersect_key(
$this->items, $this->getArrayableItems($items)
));
}
/**
* Determine if the collection is empty or not.
*
* @return bool
*/
public function isEmpty()
{
return empty($this->items);
}
/**
* Determine if the collection contains a single item.
*
* @return bool
*/
public function containsOneItem()
{
return $this->count() === 1;
}
/**
* Join all items from the collection using a string. The final items can use a separate glue string.
*
* @param string $glue
* @param string $finalGlue
* @return string
*/
public function join($glue, $finalGlue = '')
{
if ($finalGlue === '') {
return $this->implode($glue);
}
$count = $this->count();
if ($count === 0) {
return '';
}
if ($count === 1) {
return $this->last();
}
$collection = new static($this->items);
$finalItem = $collection->pop();
return $collection->implode($glue).$finalGlue.$finalItem;
}
/**
* Get the keys of the collection items.
*
* @return static<int, TKey>
*/
public function keys()
{
return new static(array_keys($this->items));
}
/**
* Get the last item from the collection.
*
* @template TLastDefault
*
* @param (callable(TValue, TKey): bool)|null $callback
* @param TLastDefault|(\Closure(): TLastDefault) $default
* @return TValue|TLastDefault
*/
public function last(callable $callback = null, $default = null)
{
return Arr::last($this->items, $callback, $default);
}
/**
* Get the values of a given key.
*
* @param string|int|array<array-key, string> $value
* @param string|null $key
* @return static<array-key, mixed>
*/
public function pluck($value, $key = null)
{
return new static(Arr::pluck($this->items, $value, $key));
}
/**
* Run a map over each of the items.
*
* @template TMapValue
*
* @param callable(TValue, TKey): TMapValue $callback
* @return static<TKey, TMapValue>
*/
public function map(callable $callback)
{
return new static(Arr::map($this->items, $callback));
}
/**
* Run a dictionary map over the items.
*
* The callback should return an associative array with a single key/value pair.
*
* @template TMapToDictionaryKey of array-key
* @template TMapToDictionaryValue
*
* @param callable(TValue, TKey): array<TMapToDictionaryKey, TMapToDictionaryValue> $callback
* @return static<TMapToDictionaryKey, array<int, TMapToDictionaryValue>>
*/
public function mapToDictionary(callable $callback)
{
$dictionary = [];
foreach ($this->items as $key => $item) {
$pair = $callback($item, $key);
$key = key($pair);
$value = reset($pair);
if (! isset($dictionary[$key])) {
$dictionary[$key] = [];
}
$dictionary[$key][] = $value;
}
return new static($dictionary);
}
/**
* Run an associative map over each of the items.
*
* The callback should return an associative array with a single key/value pair.
*
* @template TMapWithKeysKey of array-key
* @template TMapWithKeysValue
*
* @param callable(TValue, TKey): array<TMapWithKeysKey, TMapWithKeysValue> $callback
* @return static<TMapWithKeysKey, TMapWithKeysValue>
*/
public function mapWithKeys(callable $callback)
{
return new static(Arr::mapWithKeys($this->items, $callback));
}
/**
* Merge the collection with the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function merge($items)
{
return new static(array_merge($this->items, $this->getArrayableItems($items)));
}
/**
* Recursively merge the collection with the given items.
*
* @template TMergeRecursiveValue
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TMergeRecursiveValue>|iterable<TKey, TMergeRecursiveValue> $items
* @return static<TKey, TValue|TMergeRecursiveValue>
*/
public function mergeRecursive($items)
{
return new static(array_merge_recursive($this->items, $this->getArrayableItems($items)));
}
/**
* Create a collection by using this collection for keys and another for its values.
*
* @template TCombineValue
*
* @param \Illuminate\Contracts\Support\Arrayable<array-key, TCombineValue>|iterable<array-key, TCombineValue> $values
* @return static<TValue, TCombineValue>
*/
public function combine($values)
{
return new static(array_combine($this->all(), $this->getArrayableItems($values)));
}
/**
* Union the collection with the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function union($items)
{
return new static($this->items + $this->getArrayableItems($items));
}
/**
* Create a new collection consisting of every n-th element.
*
* @param int $step
* @param int $offset
* @return static
*/
public function nth($step, $offset = 0)
{
$new = [];
$position = 0;
foreach ($this->slice($offset)->items as $item) {
if ($position % $step === 0) {
$new[] = $item;
}
$position++;
}
return new static($new);
}
/**
* Get the items with the specified keys.
*
* @param \Illuminate\Support\Enumerable<array-key, TKey>|array<array-key, TKey>|string|null $keys
* @return static
*/
public function only($keys)
{
if (is_null($keys)) {
return new static($this->items);
}
if ($keys instanceof Enumerable) {
$keys = $keys->all();
}
$keys = is_array($keys) ? $keys : func_get_args();
return new static(Arr::only($this->items, $keys));
}
/**
* Get and remove the last N items from the collection.
*
* @param int $count
* @return static<int, TValue>|TValue|null
*/
public function pop($count = 1)
{
if ($count === 1) {
return array_pop($this->items);
}
if ($this->isEmpty()) {
return new static;
}
$results = [];
$collectionCount = $this->count();
foreach (range(1, min($count, $collectionCount)) as $item) {
array_push($results, array_pop($this->items));
}
return new static($results);
}
/**
* Push an item onto the beginning of the collection.
*
* @param TValue $value
* @param TKey $key
* @return $this
*/
public function prepend($value, $key = null)
{
$this->items = Arr::prepend($this->items, ...func_get_args());
return $this;
}
/**
* Push one or more items onto the end of the collection.
*
* @param TValue ...$values
* @return $this
*/
public function push(...$values)
{
foreach ($values as $value) {
$this->items[] = $value;
}
return $this;
}
/**
* Push all of the given items onto the collection.
*
* @param iterable<array-key, TValue> $source
* @return static
*/
public function concat($source)
{
$result = new static($this);
foreach ($source as $item) {
$result->push($item);
}
return $result;
}
/**
* Get and remove an item from the collection.
*
* @template TPullDefault
*
* @param TKey $key
* @param TPullDefault|(\Closure(): TPullDefault) $default
* @return TValue|TPullDefault
*/
public function pull($key, $default = null)
{
return Arr::pull($this->items, $key, $default);
}
/**
* Put an item in the collection by key.
*
* @param TKey $key
* @param TValue $value
* @return $this
*/
public function put($key, $value)
{
$this->offsetSet($key, $value);
return $this;
}
/**
* Get one or a specified number of items randomly from the collection.
*
* @param (callable(self<TKey, TValue>): int)|int|null $number
* @param bool $preserveKeys
* @return static<int, TValue>|TValue
*
* @throws \InvalidArgumentException
*/
public function random($number = null, $preserveKeys = false)
{
if (is_null($number)) {
return Arr::random($this->items);
}
if (is_callable($number)) {
return new static(Arr::random($this->items, $number($this), $preserveKeys));
}
return new static(Arr::random($this->items, $number, $preserveKeys));
}
/**
* Replace the collection items with the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function replace($items)
{
return new static(array_replace($this->items, $this->getArrayableItems($items)));
}
/**
* Recursively replace the collection items with the given items.
*
* @param \Illuminate\Contracts\Support\Arrayable<TKey, TValue>|iterable<TKey, TValue> $items
* @return static
*/
public function replaceRecursive($items)
{
return new static(array_replace_recursive($this->items, $this->getArrayableItems($items)));
}
/**
* Reverse items order.
*
* @return static
*/
public function reverse()
{
return new static(array_reverse($this->items, true));
}
/**
* Search the collection for a given value and return the corresponding key if successful.
*
* @param TValue|(callable(TValue,TKey): bool) $value
* @param bool $strict
* @return TKey|false
*/
public function search($value, $strict = false)
{
if (! $this->useAsCallable($value)) {
return array_search($value, $this->items, $strict);
}
foreach ($this->items as $key => $item) {
if ($value($item, $key)) {
return $key;
}
}
return false;
}
/**
* Get and remove the first N items from the collection.
*
* @param int $count
* @return static<int, TValue>|TValue|null
*/
public function shift($count = 1)
{
if ($count === 1) {
return array_shift($this->items);
}
if ($this->isEmpty()) {
return new static;
}
$results = [];
$collectionCount = $this->count();
foreach (range(1, min($count, $collectionCount)) as $item) {
array_push($results, array_shift($this->items));
}
return new static($results);
}
/**
* Shuffle the items in the collection.
*
* @param int|null $seed
* @return static
*/
public function shuffle($seed = null)
{
return new static(Arr::shuffle($this->items, $seed));
}
/**
* Create chunks representing a "sliding window" view of the items in the collection.
*
* @param int $size
* @param int $step
* @return static<int, static>
*/
public function sliding($size = 2, $step = 1)
{
$chunks = floor(($this->count() - $size) / $step) + 1;
return static::times($chunks, fn ($number) => $this->slice(($number - 1) * $step, $size));
}
/**
* Skip the first {$count} items.
*
* @param int $count
* @return static
*/
public function skip($count)
{
return $this->slice($count);
}
/**
* Skip items in the collection until the given condition is met.
*
* @param TValue|callable(TValue,TKey): bool $value
* @return static
*/
public function skipUntil($value)
{
return new static($this->lazy()->skipUntil($value)->all());
}
/**
* Skip items in the collection while the given condition is met.
*
* @param TValue|callable(TValue,TKey): bool $value
* @return static
*/
public function skipWhile($value)
{
return new static($this->lazy()->skipWhile($value)->all());
}
/**
* Slice the underlying collection array.
*
* @param int $offset
* @param int|null $length
* @return static
*/
public function slice($offset, $length = null)
{
return new static(array_slice($this->items, $offset, $length, true));
}
/**
* Split a collection into a certain number of groups.
*
* @param int $numberOfGroups
* @return static<int, static>
*/
public function split($numberOfGroups)
{
if ($this->isEmpty()) {
return new static;
}
$groups = new static;
$groupSize = floor($this->count() / $numberOfGroups);
$remain = $this->count() % $numberOfGroups;
$start = 0;
for ($i = 0; $i < $numberOfGroups; $i++) {
$size = $groupSize;
if ($i < $remain) {
$size++;
}
if ($size) {
$groups->push(new static(array_slice($this->items, $start, $size)));
$start += $size;
}
}
return $groups;
}
/**
* Split a collection into a certain number of groups, and fill the first groups completely.
*
* @param int $numberOfGroups
* @return static<int, static>
*/
public function splitIn($numberOfGroups)
{
return $this->chunk(ceil($this->count() / $numberOfGroups));
}
/**
* Get the first item in the collection, but only if exactly one item exists. Otherwise, throw an exception.
*
* @param (callable(TValue, TKey): bool)|string $key
* @param mixed $operator
* @param mixed $value
* @return TValue
*
* @throws \Illuminate\Support\ItemNotFoundException
* @throws \Illuminate\Support\MultipleItemsFoundException
*/
public function sole($key = null, $operator = null, $value = null)
{
$filter = func_num_args() > 1
? $this->operatorForWhere(...func_get_args())
: $key;
$items = $this->unless($filter == null)->filter($filter);
$count = $items->count();
if ($count === 0) {
throw new ItemNotFoundException;
}
if ($count > 1) {
throw new MultipleItemsFoundException($count);
}
return $items->first();
}
/**
* Get the first item in the collection but throw an exception if no matching items exist.
*
* @param (callable(TValue, TKey): bool)|string $key
* @param mixed $operator
* @param mixed $value
* @return TValue
*
* @throws \Illuminate\Support\ItemNotFoundException
*/
public function firstOrFail($key = null, $operator = null, $value = null)
{
$filter = func_num_args() > 1
? $this->operatorForWhere(...func_get_args())
: $key;
$placeholder = new stdClass();
$item = $this->first($filter, $placeholder);
if ($item === $placeholder) {
throw new ItemNotFoundException;
}
return $item;
}
/**
* Chunk the collection into chunks of the given size.
*
* @param int $size
* @return static<int, static>
*/
public function chunk($size)
{
if ($size <= 0) {
return new static;
}
$chunks = [];
foreach (array_chunk($this->items, $size, true) as $chunk) {
$chunks[] = new static($chunk);
}
return new static($chunks);
}
/**
* Chunk the collection into chunks with a callback.
*
* @param callable(TValue, TKey, static<int, TValue>): bool $callback
* @return static<int, static<int, TValue>>
*/
public function chunkWhile(callable $callback)
{
return new static(
$this->lazy()->chunkWhile($callback)->mapInto(static::class)
);
}
/**
* Sort through each item with a callback.
*
* @param (callable(TValue, TValue): int)|null|int $callback
* @return static
*/
public function sort($callback = null)
{
$items = $this->items;
$callback && is_callable($callback)
? uasort($items, $callback)
: asort($items, $callback ?? SORT_REGULAR);
return new static($items);
}
/**
* Sort items in descending order.
*
* @param int $options
* @return static
*/
public function sortDesc($options = SORT_REGULAR)
{
$items = $this->items;
arsort($items, $options);
return new static($items);
}
/**
* Sort the collection using the given callback.
*
* @param array<array-key, (callable(TValue, TValue): mixed)|(callable(TValue, TKey): mixed)|string|array{string, string}>|(callable(TValue, TKey): mixed)|string $callback
* @param int $options
* @param bool $descending
* @return static
*/
public function sortBy($callback, $options = SORT_REGULAR, $descending = false)
{
if (is_array($callback) && ! is_callable($callback)) {
return $this->sortByMany($callback);
}
$results = [];
$callback = $this->valueRetriever($callback);
// First we will loop through the items and get the comparator from a callback
// function which we were given. Then, we will sort the returned values and
// grab all the corresponding values for the sorted keys from this array.
foreach ($this->items as $key => $value) {
$results[$key] = $callback($value, $key);
}
$descending ? arsort($results, $options)
: asort($results, $options);
// Once we have sorted all of the keys in the array, we will loop through them
// and grab the corresponding model so we can set the underlying items list
// to the sorted version. Then we'll just return the collection instance.
foreach (array_keys($results) as $key) {
$results[$key] = $this->items[$key];
}
return new static($results);
}
/**
* Sort the collection using multiple comparisons.
*
* @param array<array-key, (callable(TValue, TValue): mixed)|(callable(TValue, TKey): mixed)|string|array{string, string}> $comparisons
* @return static
*/
protected function sortByMany(array $comparisons = [])
{
$items = $this->items;
uasort($items, function ($a, $b) use ($comparisons) {
foreach ($comparisons as $comparison) {
$comparison = Arr::wrap($comparison);
$prop = $comparison[0];
$ascending = Arr::get($comparison, 1, true) === true ||
Arr::get($comparison, 1, true) === 'asc';
if (! is_string($prop) && is_callable($prop)) {
$result = $prop($a, $b);
} else {
$values = [data_get($a, $prop), data_get($b, $prop)];
if (! $ascending) {
$values = array_reverse($values);
}
$result = $values[0] <=> $values[1];
}
if ($result === 0) {
continue;
}
return $result;
}
});
return new static($items);
}
/**
* Sort the collection in descending order using the given callback.
*
* @param array<array-key, (callable(TValue, TValue): mixed)|(callable(TValue, TKey): mixed)|string|array{string, string}>|(callable(TValue, TKey): mixed)|string $callback
* @param int $options
* @return static
*/
public function sortByDesc($callback, $options = SORT_REGULAR)
{
return $this->sortBy($callback, $options, true);
}
/**
* Sort the collection keys.
*
* @param int $options
* @param bool $descending
* @return static
*/
public function sortKeys($options = SORT_REGULAR, $descending = false)
{
$items = $this->items;
$descending ? krsort($items, $options) : ksort($items, $options);
return new static($items);
}
/**
* Sort the collection keys in descending order.
*
* @param int $options
* @return static
*/
public function sortKeysDesc($options = SORT_REGULAR)
{
return $this->sortKeys($options, true);
}
/**
* Sort the collection keys using a callback.
*
* @param callable(TKey, TKey): int $callback
* @return static
*/
public function sortKeysUsing(callable $callback)
{
$items = $this->items;
uksort($items, $callback);
return new static($items);
}
/**
* Splice a portion of the underlying collection array.
*
* @param int $offset
* @param int|null $length
* @param array<array-key, TValue> $replacement
* @return static
*/
public function splice($offset, $length = null, $replacement = [])
{
if (func_num_args() === 1) {
return new static(array_splice($this->items, $offset));
}
return new static(array_splice($this->items, $offset, $length, $this->getArrayableItems($replacement)));
}
/**
* Take the first or last {$limit} items.
*
* @param int $limit
* @return static
*/
public function take($limit)
{
if ($limit < 0) {
return $this->slice($limit, abs($limit));
}
return $this->slice(0, $limit);
}
/**
* Take items in the collection until the given condition is met.
*
* @param TValue|callable(TValue,TKey): bool $value
* @return static
*/
public function takeUntil($value)
{
return new static($this->lazy()->takeUntil($value)->all());
}
/**
* Take items in the collection while the given condition is met.
*
* @param TValue|callable(TValue,TKey): bool $value
* @return static
*/
public function takeWhile($value)
{
return new static($this->lazy()->takeWhile($value)->all());
}
/**
* Transform each item in the collection using a callback.
*
* @param callable(TValue, TKey): TValue $callback
* @return $this
*/
public function transform(callable $callback)
{
$this->items = $this->map($callback)->all();
return $this;
}
/**
* Flatten a multi-dimensional associative array with dots.
*
* @return static
*/
public function dot()
{
return new static(Arr::dot($this->all()));
}
/**
* Convert a flatten "dot" notation array into an expanded array.
*
* @return static
*/
public function undot()
{
return new static(Arr::undot($this->all()));
}
/**
* Return only unique items from the collection array.
*
* @param (callable(TValue, TKey): mixed)|string|null $key
* @param bool $strict
* @return static
*/
public function unique($key = null, $strict = false)
{
if (is_null($key) && $strict === false) {
return new static(array_unique($this->items, SORT_REGULAR));
}
$callback = $this->valueRetriever($key);
$exists = [];
return $this->reject(function ($item, $key) use ($callback, $strict, &$exists) {
if (in_array($id = $callback($item, $key), $exists, $strict)) {
return true;
}
$exists[] = $id;
});
}
/**
* Reset the keys on the underlying array.
*
* @return static<int, TValue>
*/
public function values()
{
return new static(array_values($this->items));
}
/**
* Zip the collection together with one or more arrays.
*
* e.g. new Collection([1, 2, 3])->zip([4, 5, 6]);
* => [[1, 4], [2, 5], [3, 6]]
*
* @template TZipValue
*
* @param \Illuminate\Contracts\Support\Arrayable<array-key, TZipValue>|iterable<array-key, TZipValue> ...$items
* @return static<int, static<int, TValue|TZipValue>>
*/
public function zip($items)
{
$arrayableItems = array_map(fn ($items) => $this->getArrayableItems($items), func_get_args());
$params = array_merge([fn () => new static(func_get_args()), $this->items], $arrayableItems);
return new static(array_map(...$params));
}
/**
* Pad collection to the specified length with a value.
*
* @template TPadValue
*
* @param int $size
* @param TPadValue $value
* @return static<int, TValue|TPadValue>
*/
public function pad($size, $value)
{
return new static(array_pad($this->items, $size, $value));
}
/**
* Get an iterator for the items.
*
* @return \ArrayIterator<TKey, TValue>
*/
public function getIterator(): Traversable
{
return new ArrayIterator($this->items);
}
/**
* Count the number of items in the collection.
*
* @return int
*/
public function count(): int
{
return count($this->items);
}
/**
* Count the number of items in the collection by a field or using a callback.
*
* @param (callable(TValue, TKey): array-key)|string|null $countBy
* @return static<array-key, int>
*/
public function countBy($countBy = null)
{
return new static($this->lazy()->countBy($countBy)->all());
}
/**
* Add an item to the collection.
*
* @param TValue $item
* @return $this
*/
public function add($item)
{
$this->items[] = $item;
return $this;
}
/**
* Get a base Support collection instance from this collection.
*
* @return \Illuminate\Support\Collection<TKey, TValue>
*/
public function toBase()
{
return new self($this);
}
/**
* Determine if an item exists at an offset.
*
* @param TKey $key
* @return bool
*/
public function offsetExists($key): bool
{
return isset($this->items[$key]);
}
/**
* Get an item at a given offset.
*
* @param TKey $key
* @return TValue
*/
public function offsetGet($key): mixed
{
return $this->items[$key];
}
/**
* Set the item at a given offset.
*
* @param TKey|null $key
* @param TValue $value
* @return void
*/
public function offsetSet($key, $value): void
{
if (is_null($key)) {
$this->items[] = $value;
} else {
$this->items[$key] = $value;
}
}
/**
* Unset the item at a given offset.
*
* @param TKey $key
* @return void
*/
public function offsetUnset($key): void
{
unset($this->items[$key]);
}
}