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/Laravel 8

LazyCollection

class LazyCollection implements Enumerable (View source)

Traits

Properties

static protected string[]	$proxies	The methods that can be proxied.	from EnumeratesValues
static protected array	$macros	The registered string macros.	from Macroable
callable\|LazyCollection	$source	The source from which to generate items.

Methods

static EnumeratesValues

make(mixed $items = [])

Create a new collection instance if the value isn't one already.

from EnumeratesValues

static EnumeratesValues

wrap(mixed $value)

Wrap the given value in a collection if applicable.

from EnumeratesValues

static array

unwrap(array|EnumeratesValues $value)

Get the underlying items from the given collection if applicable.

from EnumeratesValues

static EnumeratesValues

empty()

Create a new instance with no items.

from EnumeratesValues

static EnumeratesValues

times(int $number, callable $callback = null)

Create a new collection by invoking the callback a given amount of times.

from EnumeratesValues

mixed

average(callable|string|null $callback = null)

Alias for the "avg" method.

from EnumeratesValues

bool

some(mixed $key, mixed $operator = null, mixed $value = null)

Alias for the "contains" method.

from EnumeratesValues

bool

containsStrict(mixed $key, mixed $value = null)

Determine if an item exists, using strict comparison.

from EnumeratesValues

void

dd(mixed ...$args)

Dump the items and end the script.

from EnumeratesValues

$this

dump()

Dump the items.

from EnumeratesValues

$this

each(callable $callback)

Execute a callback over each item.

from EnumeratesValues

EnumeratesValues

eachSpread(callable $callback)

Execute a callback over each nested chunk of items.

from EnumeratesValues

bool

every(string|callable $key, mixed $operator = null, mixed $value = null)

Determine if all items pass the given truth test.

from EnumeratesValues

mixed

firstWhere(string $key, mixed $operator = null, mixed $value = null)

Get the first item by the given key value pair.

from EnumeratesValues

bool

isNotEmpty()

Determine if the collection is not empty.

from EnumeratesValues

EnumeratesValues

mapSpread(callable $callback)

Run a map over each nested chunk of items.

from EnumeratesValues

EnumeratesValues

mapToGroups(callable $callback)

Run a grouping map over the items.

from EnumeratesValues

EnumeratesValues

flatMap(callable $callback)

Map a collection and flatten the result by a single level.

from EnumeratesValues

EnumeratesValues

mapInto(string $class)

Map the values into a new class.

from EnumeratesValues

mixed

min(callable|string|null $callback = null)

Get the min value of a given key.

from EnumeratesValues

mixed

max(callable|string|null $callback = null)

Get the max value of a given key.

from EnumeratesValues

EnumeratesValues

forPage(int $page, int $perPage)

"Paginate" the collection by slicing it into a smaller collection.

from EnumeratesValues

EnumeratesValues

partition(callable|string $key, mixed $operator = null, mixed $value = null)

Partition the collection into two arrays using the given callback or key.

from EnumeratesValues

mixed

sum(callable|string|null $callback = null)

Get the sum of the given values.

from EnumeratesValues

EnumeratesValues|mixed

when(bool|mixed $value, callable $callback = null, callable $default = null)

Apply the callback if the value is truthy.

from EnumeratesValues

EnumeratesValues|mixed

whenEmpty(callable $callback, callable $default = null)

Apply the callback if the collection is empty.

from EnumeratesValues

EnumeratesValues|mixed

whenNotEmpty(callable $callback, callable $default = null)

Apply the callback if the collection is not empty.

from EnumeratesValues

EnumeratesValues|mixed

unless(bool $value, callable $callback, callable $default = null)

Apply the callback if the value is falsy.

from EnumeratesValues

EnumeratesValues|mixed

unlessEmpty(callable $callback, callable $default = null)

Apply the callback unless the collection is empty.

from EnumeratesValues

EnumeratesValues|mixed

unlessNotEmpty(callable $callback, callable $default = null)

Apply the callback unless the collection is not empty.

from EnumeratesValues

EnumeratesValues

where(string $key, mixed $operator = null, mixed $value = null)

Filter items by the given key value pair.

from EnumeratesValues

EnumeratesValues

whereNull(string|null $key = null)

Filter items where the value for the given key is null.

from EnumeratesValues

EnumeratesValues

whereNotNull(string|null $key = null)

Filter items where the value for the given key is not null.

from EnumeratesValues

EnumeratesValues

whereStrict(string $key, mixed $value)

Filter items by the given key value pair using strict comparison.

from EnumeratesValues

EnumeratesValues

whereIn(string $key, mixed $values, bool $strict = false)

Filter items by the given key value pair.

from EnumeratesValues

EnumeratesValues

whereInStrict(string $key, mixed $values)

Filter items by the given key value pair using strict comparison.

from EnumeratesValues

EnumeratesValues

whereBetween(string $key, array $values)

Filter items such that the value of the given key is between the given values.

from EnumeratesValues

EnumeratesValues

whereNotBetween(string $key, array $values)

Filter items such that the value of the given key is not between the given values.

from EnumeratesValues

EnumeratesValues

whereNotIn(string $key, mixed $values, bool $strict = false)

Filter items by the given key value pair.

from EnumeratesValues

EnumeratesValues

whereNotInStrict(string $key, mixed $values)

Filter items by the given key value pair using strict comparison.

from EnumeratesValues

EnumeratesValues

whereInstanceOf(string $type)

Filter the items, removing any items that don't match the given type.

from EnumeratesValues

mixed

pipe(callable $callback)

Pass the collection to the given callback and return the result.

from EnumeratesValues

mixed

pipeInto(string $class)

Pass the collection into a new class.

from EnumeratesValues

$this

tap(callable $callback)

Pass the collection to the given callback and then return it.

from EnumeratesValues

EnumeratesValues

reject(callable|mixed $callback = true)

Create a collection of all elements that do not pass a given truth test.

from EnumeratesValues

EnumeratesValues

unique(string|callable|null $key = null, bool $strict = false)

Return only unique items from the collection array.

from EnumeratesValues

EnumeratesValues

uniqueStrict(string|callable|null $key = null)

Return only unique items from the collection array using strict comparison.

from EnumeratesValues

Collection

collect()

Collect the values into a collection.

from EnumeratesValues

array

toArray()

Get the collection of items as a plain array.

from EnumeratesValues

array

jsonSerialize()

Convert the object into something JSON serializable.

from EnumeratesValues

string

toJson(int $options = 0)

Get the collection of items as JSON.

from EnumeratesValues

CachingIterator

getCachingIterator(int $flags = CachingIterator::CALL_TOSTRING)

Get a CachingIterator instance.

from EnumeratesValues

string

__toString()

Convert the collection to its string representation.

from EnumeratesValues

static void

proxy(string $method)

Add a method to the list of proxied methods.

from EnumeratesValues

mixed

__get(string $key)

Dynamically access collection proxies.

from EnumeratesValues

array

getArrayableItems(mixed $items)

Results array of items from Collection or Arrayable.

from EnumeratesValues

Closure

operatorForWhere(string $key, string|null $operator = null, mixed $value = null)

Get an operator checker callback.

from EnumeratesValues

bool

useAsCallable(mixed $value)

Determine if the given value is callable, but not a string.

from EnumeratesValues

callable

valueRetriever(callable|string|null $value)

Get a value retrieving callback.

from EnumeratesValues

Closure

equality(mixed $value)

Make a function to check an item's equality.

from EnumeratesValues

Closure

negate(Closure $callback)

Make a function using another function, by negating its result.

from EnumeratesValues

Closure

identity()

Make a function that returns what's passed to it.

from EnumeratesValues

static void

macro(string $name, object|callable $macro)

from Macroable

static void

mixin(object $mixin, bool $replace = true)

Mix another object into the class.

from Macroable

static bool

hasMacro(string $name)

Checks if macro is registered.

from Macroable

static mixed

__callStatic(string $method, array $parameters)

Dynamically handle calls to the class.

from Macroable

mixed

__call(string $method, array $parameters)

Dynamically handle calls to the class.

from Macroable

void

__construct(mixed $source = null)

Create a new lazy collection instance.

static Enumerable

range(int $from, int $to)

Create a collection with the given range.

array

all()

Get all items in the enumerable.

LazyCollection

eager()

Eager load all items into a new lazy collection backed by an array.

LazyCollection

remember()

Cache values as they're enumerated.

mixed

avg(callable|string|null $callback = null)

Get the average value of a given key.

mixed

median(string|array|null $key = null)

Get the median of a given key.

array|null

mode(string|array|null $key = null)

Get the mode of a given key.

Enumerable

collapse()

Collapse the collection of items into a single array.

bool

contains(mixed $key, mixed $operator = null, mixed $value = null)

Determine if an item exists in the enumerable.

Enumerable

crossJoin(array ...$arrays)

Cross join the given iterables, returning all possible permutations.

Enumerable

countBy(callable|string $countBy = null)

Count the number of items in the collection by a field or using a callback.

Enumerable

diff(mixed $items)

Get the items that are not present in the given items.

Enumerable

diffUsing(mixed $items, callable $callback)

Get the items that are not present in the given items, using the callback.

Enumerable

diffAssoc(mixed $items)

Get the items whose keys and values are not present in the given items.

Enumerable

diffAssocUsing(mixed $items, callable $callback)

Get the items whose keys and values are not present in the given items, using the callback.

Enumerable

diffKeys(mixed $items)

Get the items whose keys are not present in the given items.

Enumerable

diffKeysUsing(mixed $items, callable $callback)

Get the items whose keys are not present in the given items, using the callback.

Enumerable

duplicates(callable|null $callback = null, bool $strict = false)

Retrieve duplicate items.

Enumerable

duplicatesStrict(callable|null $callback = null)

Retrieve duplicate items using strict comparison.

Enumerable

except(mixed $keys)

Get all items except for those with the specified keys.

Enumerable

filter(callable $callback = null)

Run a filter over each of the items.

mixed

first(callable $callback = null, mixed $default = null)

Get the first item from the enumerable passing the given truth test.

Enumerable

flatten(int $depth = INF)

Get a flattened list of the items in the collection.

Enumerable

flip()

Flip the items in the collection.

mixed

get(mixed $key, mixed $default = null)

Get an item by key.

Enumerable

groupBy(array|callable|string $groupBy, bool $preserveKeys = false)

Group an associative array by a field or using a callback.

Enumerable

keyBy(callable|string $keyBy)

Key an associative array by a field or using a callback.

bool

has(mixed $key)

Determine if an item exists in the collection by key.

string

implode(string $value, string|null $glue = null)

Concatenate values of a given key as a string.

Enumerable

intersect(mixed $items)

Intersect the collection with the given items.

Enumerable

intersectByKeys(mixed $items)

Intersect the collection with the given items by key.

bool

isEmpty()

Determine if the items is empty or not.

string

join(string $glue, string $finalGlue = '')

Join all items from the collection using a string. The final items can use a separate glue string.

Enumerable

keys()

Get the keys of the collection items.

mixed

last(callable $callback = null, mixed $default = null)

Get the last item from the collection.

Enumerable

pluck(string|array $value, string|null $key = null)

Get the values of a given key.

Enumerable

map(callable $callback)

Run a map over each of the items.

Enumerable

mapToDictionary(callable $callback)

Run a dictionary map over the items.

Enumerable

mapWithKeys(callable $callback)

Run an associative map over each of the items.

Enumerable

merge(mixed $items)

Merge the collection with the given items.

Enumerable

mergeRecursive(mixed $items)

Recursively merge the collection with the given items.

Enumerable

combine(mixed $values)

Create a collection by using this collection for keys and another for its values.

Enumerable

union(mixed $items)

Union the collection with the given items.

Enumerable

nth(int $step, int $offset = 0)

Create a new collection consisting of every n-th element.

Enumerable

only(mixed $keys)

Get the items with the specified keys.

Enumerable

concat(iterable $source)

Push all of the given items onto the collection.

Enumerable|mixed

random(int|null $number = null)

Get one or a specified number of items randomly from the collection.

mixed

reduce(callable $callback, mixed $initial = null)

Reduce the collection to a single value.

Enumerable

replace(mixed $items)

Replace the collection items with the given items.

Enumerable

replaceRecursive(mixed $items)

Recursively replace the collection items with the given items.

Enumerable

reverse()

Reverse items order.

mixed

search(mixed $value, bool $strict = false)

Search the collection for a given value and return the corresponding key if successful.

Enumerable

shuffle(int|null $seed = null)

Shuffle the items in the collection.

Enumerable

skip(int $count)

Skip the first {$count} items.

Enumerable

skipUntil(mixed $value)

Skip items in the collection until the given condition is met.

Enumerable

skipWhile(mixed $value)

Skip items in the collection while the given condition is met.

Enumerable

slice(int $offset, int|null $length = null)

Get a slice of items from the enumerable.

Enumerable

split(int $numberOfGroups)

Split a collection into a certain number of groups.

Enumerable

chunk(int $size)

Chunk the collection into chunks of the given size.

Enumerable

chunkWhile(callable $callback)

Chunk the collection into chunks with a callback.

Enumerable

sort(callable|null|int $callback = null)

Sort through each item with a callback.

Enumerable

sortDesc(int $options = SORT_REGULAR)

Sort items in descending order.

Enumerable

sortBy(callable|string $callback, int $options = SORT_REGULAR, bool $descending = false)

Sort the collection using the given callback.

Enumerable

sortByDesc(callable|string $callback, int $options = SORT_REGULAR)

Sort the collection in descending order using the given callback.

Enumerable

sortKeys(int $options = SORT_REGULAR, bool $descending = false)

Sort the collection keys.

Enumerable

sortKeysDesc(int $options = SORT_REGULAR)

Sort the collection keys in descending order.

Enumerable

take(int $limit)

Take the first or last {$limit} items.

Enumerable

takeUntil(mixed $value)

Take items in the collection until the given condition is met.

LazyCollection

takeUntilTimeout(DateTimeInterface $timeout)

Take items in the collection until a given point in time.

Enumerable

takeWhile(mixed $value)

Take items in the collection while the given condition is met.

LazyCollection

tapEach(callable $callback)

Pass each item in the collection to the given callback, lazily.

Enumerable

values()

Reset the keys on the underlying array.

Enumerable

zip(mixed $items)

Zip the collection together with one or more arrays.

Enumerable

pad(int $size, mixed $value)

Pad collection to the specified length with a value.

Traversable

getIterator()

Get the values iterator.

int

count()

Count the number of items in the collection.

Traversable

makeIterator(mixed $source)

Make an iterator from the given source.

array

explodePluckParameters(string|array $value, string|array|null $key)

Explode the "value" and "key" arguments passed to "pluck".

LazyCollection

passthru(string $method, array $params)

Pass this lazy collection through a method on the collection class.

int

now()

Get the current time.

Details

static EnumeratesValues make(mixed $items = [])

Create a new collection instance if the value isn't one already.

Parameters

mixed

$items

Return Value

EnumeratesValues

static EnumeratesValues wrap(mixed $value)

Wrap the given value in a collection if applicable.

Parameters

mixed

$value

Return Value

EnumeratesValues

static array unwrap(array|EnumeratesValues $value)

Get the underlying items from the given collection if applicable.

Parameters

array|EnumeratesValues

$value

Return Value

array

static EnumeratesValues empty()

Create a new instance with no items.

Return Value

EnumeratesValues

static EnumeratesValues times(int $number, callable $callback = null)

Create a new collection by invoking the callback a given amount of times.

Parameters

int	$number
callable	$callback

Return Value

EnumeratesValues

mixed average(callable|string|null $callback = null)

Alias for the "avg" method.

Parameters

callable|string|null

$callback

Return Value

mixed

bool some(mixed $key, mixed $operator = null, mixed $value = null)

Alias for the "contains" method.

Parameters

mixed	$key
mixed	$operator
mixed	$value

Return Value

bool

bool containsStrict(mixed $key, mixed $value = null)

Determine if an item exists, using strict comparison.

Parameters

mixed	$key
mixed	$value

Return Value

bool

void dd(mixed ...$args)

Dump the items and end the script.

Parameters

mixed

...$args

Return Value

void

$this dump()

Dump the items.

Return Value

$this

$this each(callable $callback)

Execute a callback over each item.

Parameters

callable

$callback

Return Value

$this

EnumeratesValues eachSpread(callable $callback)

Execute a callback over each nested chunk of items.

Parameters

callable

$callback

Return Value

EnumeratesValues

bool every(string|callable $key, mixed $operator = null, mixed $value = null)

Determine if all items pass the given truth test.

Parameters

string\|callable	$key
mixed	$operator
mixed	$value

Return Value

bool

mixed firstWhere(string $key, mixed $operator = null, mixed $value = null)

Get the first item by the given key value pair.

Parameters

string	$key
mixed	$operator
mixed	$value

Return Value

mixed

bool isNotEmpty()

Determine if the collection is not empty.

Return Value

bool

EnumeratesValues mapSpread(callable $callback)

Run a map over each nested chunk of items.

Parameters

callable

$callback

Return Value

EnumeratesValues

EnumeratesValues mapToGroups(callable $callback)

Run a grouping map over the items.

The callback should return an associative array with a single key/value pair.

Parameters

callable

$callback

Return Value

EnumeratesValues

EnumeratesValues flatMap(callable $callback)

Map a collection and flatten the result by a single level.

Parameters

callable

$callback

Return Value

EnumeratesValues

EnumeratesValues mapInto(string $class)

Map the values into a new class.

Parameters

string

$class

Return Value

EnumeratesValues

mixed min(callable|string|null $callback = null)

Get the min value of a given key.

Parameters

callable|string|null

$callback

Return Value

mixed

mixed max(callable|string|null $callback = null)

Get the max value of a given key.

Parameters

callable|string|null

$callback

Return Value

mixed

EnumeratesValues forPage(int $page, int $perPage)

"Paginate" the collection by slicing it into a smaller collection.

Parameters

int	$page
int	$perPage

Return Value

EnumeratesValues

EnumeratesValues partition(callable|string $key, mixed $operator = null, mixed $value = null)

Partition the collection into two arrays using the given callback or key.

Parameters

callable\|string	$key
mixed	$operator
mixed	$value

Return Value

EnumeratesValues

mixed sum(callable|string|null $callback = null)

Get the sum of the given values.

Parameters

callable|string|null

$callback

Return Value

mixed

EnumeratesValues|mixed when(bool|mixed $value, callable $callback = null, callable $default = null)

Apply the callback if the value is truthy.

Parameters

bool\|mixed	$value
callable	$callback
callable	$default

Return Value

EnumeratesValues|mixed

EnumeratesValues|mixed whenEmpty(callable $callback, callable $default = null)

Apply the callback if the collection is empty.

Parameters

callable	$callback
callable	$default

Return Value

EnumeratesValues|mixed

EnumeratesValues|mixed whenNotEmpty(callable $callback, callable $default = null)

Apply the callback if the collection is not empty.

Parameters

callable	$callback
callable	$default

Return Value

EnumeratesValues|mixed

EnumeratesValues|mixed unless(bool $value, callable $callback, callable $default = null)

Apply the callback if the value is falsy.

Parameters

bool	$value
callable	$callback
callable	$default

Return Value

EnumeratesValues|mixed

EnumeratesValues|mixed unlessEmpty(callable $callback, callable $default = null)

Apply the callback unless the collection is empty.

Parameters

callable	$callback
callable	$default

Return Value

EnumeratesValues|mixed

EnumeratesValues|mixed unlessNotEmpty(callable $callback, callable $default = null)

Apply the callback unless the collection is not empty.

Parameters

callable	$callback
callable	$default

Return Value

EnumeratesValues|mixed

EnumeratesValues where(string $key, mixed $operator = null, mixed $value = null)

Filter items by the given key value pair.

Parameters

string	$key
mixed	$operator
mixed	$value

Return Value

EnumeratesValues

EnumeratesValues whereNull(string|null $key = null)

Filter items where the value for the given key is null.

Parameters

string|null

$key

Return Value

EnumeratesValues

EnumeratesValues whereNotNull(string|null $key = null)

Filter items where the value for the given key is not null.

Parameters

string|null

$key

Return Value

EnumeratesValues

EnumeratesValues whereStrict(string $key, mixed $value)

Filter items by the given key value pair using strict comparison.

Parameters

string	$key
mixed	$value

Return Value

EnumeratesValues

EnumeratesValues whereIn(string $key, mixed $values, bool $strict = false)

Filter items by the given key value pair.

Parameters

string	$key
mixed	$values
bool	$strict

Return Value

EnumeratesValues

EnumeratesValues whereInStrict(string $key, mixed $values)

Filter items by the given key value pair using strict comparison.

Parameters

string	$key
mixed	$values

Return Value

EnumeratesValues

EnumeratesValues whereBetween(string $key, array $values)

Filter items such that the value of the given key is between the given values.

Parameters

string	$key
array	$values

Return Value

EnumeratesValues

EnumeratesValues whereNotBetween(string $key, array $values)

Filter items such that the value of the given key is not between the given values.

Parameters

string	$key
array	$values

Return Value

EnumeratesValues

EnumeratesValues whereNotIn(string $key, mixed $values, bool $strict = false)

Filter items by the given key value pair.

Parameters

string	$key
mixed	$values
bool	$strict

Return Value

EnumeratesValues

EnumeratesValues whereNotInStrict(string $key, mixed $values)

Filter items by the given key value pair using strict comparison.

Parameters

string	$key
mixed	$values

Return Value

EnumeratesValues

EnumeratesValues whereInstanceOf(string $type)

Filter the items, removing any items that don't match the given type.

Parameters

string

$type

Return Value

EnumeratesValues

mixed pipe(callable $callback)

Pass the collection to the given callback and return the result.

Parameters

callable

$callback

Return Value

mixed

mixed pipeInto(string $class)

Pass the collection into a new class.

Parameters

string

$class

Return Value

mixed

$this tap(callable $callback)

Pass the collection to the given callback and then return it.

Parameters

callable

$callback

Return Value

$this

EnumeratesValues reject(callable|mixed $callback = true)

Create a collection of all elements that do not pass a given truth test.

Parameters

callable|mixed

$callback

Return Value

EnumeratesValues

EnumeratesValues unique(string|callable|null $key = null, bool $strict = false)

Return only unique items from the collection array.

Parameters

string\|callable\|null	$key
bool	$strict

Return Value

EnumeratesValues

EnumeratesValues uniqueStrict(string|callable|null $key = null)

Return only unique items from the collection array using strict comparison.

Parameters

string|callable|null

$key

Return Value

EnumeratesValues

Collection collect()

Collect the values into a collection.

Return Value

Collection

array toArray()

Get the collection of items as a plain array.

Return Value

array

array jsonSerialize()

Convert the object into something JSON serializable.

Return Value

array

string toJson(int $options = 0)

Get the collection of items as JSON.

Parameters

int

$options

Return Value

string

CachingIterator getCachingIterator(int $flags = CachingIterator::CALL_TOSTRING)

Get a CachingIterator instance.

Parameters

int

$flags

Return Value

CachingIterator

string __toString()

Convert the collection to its string representation.

Return Value

string

static void proxy(string $method)

Add a method to the list of proxied methods.

Parameters

string

$method

Return Value

void

mixed __get(string $key)

Dynamically access collection proxies.

Parameters

string

$key

Return Value

mixed

Exceptions

Exception

protected array getArrayableItems(mixed $items)

Results array of items from Collection or Arrayable.

Parameters

mixed

$items

Return Value

array

protected Closure operatorForWhere(string $key, string|null $operator = null, mixed $value = null)

Get an operator checker callback.

Parameters

string	$key
string\|null	$operator
mixed	$value

Return Value

Closure

protected bool useAsCallable(mixed $value)

Determine if the given value is callable, but not a string.

Parameters

mixed

$value

Return Value

bool

protected callable valueRetriever(callable|string|null $value)

Get a value retrieving callback.

Parameters

callable|string|null

$value

Return Value

callable

protected Closure equality(mixed $value)

Make a function to check an item's equality.

Parameters

mixed

$value

Return Value

Closure

protected Closure negate(Closure $callback)

Make a function using another function, by negating its result.

Parameters

Closure

$callback

Return Value

Closure

protected Closure identity()

Make a function that returns what's passed to it.

Return Value

Closure

static void macro(string $name, object|callable $macro)

Parameters

string	$name
object\|callable	$macro

Return Value

void

static void mixin(object $mixin, bool $replace = true)

Mix another object into the class.

Parameters

object	$mixin
bool	$replace

Return Value

void

Exceptions

ReflectionException

static bool hasMacro(string $name)

Checks if macro is registered.

Parameters

string

$name

Return Value

bool

static mixed __callStatic(string $method, array $parameters)

Dynamically handle calls to the class.

Parameters

string	$method
array	$parameters

Return Value

mixed

Exceptions

BadMethodCallException

mixed __call(string $method, array $parameters)

Dynamically handle calls to the class.

Parameters

string	$method
array	$parameters

Return Value

mixed

Exceptions

BadMethodCallException

void __construct(mixed $source = null)

Create a new lazy collection instance.

Parameters

mixed

$source

Return Value

void

static Enumerable range(int $from, int $to)

Create a collection with the given range.

Parameters

int	$from
int	$to

Return Value

Enumerable

array all()

Get all items in the enumerable.

Return Value

array

LazyCollection eager()

Eager load all items into a new lazy collection backed by an array.

Return Value

LazyCollection

LazyCollection remember()

Cache values as they're enumerated.

Return Value

LazyCollection

mixed avg(callable|string|null $callback = null)

Get the average value of a given key.

Parameters

callable|string|null

$callback

Return Value

mixed

mixed median(string|array|null $key = null)

Get the median of a given key.

Parameters

string|array|null

$key

Return Value

mixed

array|null mode(string|array|null $key = null)

Get the mode of a given key.

Parameters

string|array|null

$key

Return Value

array|null

Enumerable collapse()

Collapse the collection of items into a single array.

Return Value

Enumerable

bool contains(mixed $key, mixed $operator = null, mixed $value = null)

Determine if an item exists in the enumerable.

Parameters

mixed	$key
mixed	$operator
mixed	$value

Return Value

bool

Enumerable crossJoin(array ...$arrays)

Cross join the given iterables, returning all possible permutations.

Parameters

array

...$arrays

Return Value

Enumerable

Enumerable countBy(callable|string $countBy = null)

Count the number of items in the collection by a field or using a callback.

Parameters

callable|string

$countBy

Return Value

Enumerable

Enumerable diff(mixed $items)

Get the items that are not present in the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable diffUsing(mixed $items, callable $callback)

Get the items that are not present in the given items, using the callback.

Parameters

mixed	$items
callable	$callback

Return Value

Enumerable

Enumerable diffAssoc(mixed $items)

Get the items whose keys and values are not present in the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable diffAssocUsing(mixed $items, callable $callback)

Get the items whose keys and values are not present in the given items, using the callback.

Parameters

mixed	$items
callable	$callback

Return Value

Enumerable

Enumerable diffKeys(mixed $items)

Get the items whose keys are not present in the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable diffKeysUsing(mixed $items, callable $callback)

Get the items whose keys are not present in the given items, using the callback.

Parameters

mixed	$items
callable	$callback

Return Value

Enumerable

Enumerable duplicates(callable|null $callback = null, bool $strict = false)

Retrieve duplicate items.

Parameters

callable\|null	$callback
bool	$strict

Return Value

Enumerable

Enumerable duplicatesStrict(callable|null $callback = null)

Retrieve duplicate items using strict comparison.

Parameters

callable|null

$callback

Return Value

Enumerable

Enumerable except(mixed $keys)

Get all items except for those with the specified keys.

Parameters

mixed

$keys

Return Value

Enumerable

Enumerable filter(callable $callback = null)

Run a filter over each of the items.

Parameters

callable

$callback

Return Value

Enumerable

mixed first(callable $callback = null, mixed $default = null)

Get the first item from the enumerable passing the given truth test.

Parameters

callable	$callback
mixed	$default

Return Value

mixed

Enumerable flatten(int $depth = INF)

Get a flattened list of the items in the collection.

Parameters

int

$depth

Return Value

Enumerable

Enumerable flip()

Flip the items in the collection.

Return Value

Enumerable

mixed get(mixed $key, mixed $default = null)

Get an item by key.

Parameters

mixed	$key
mixed	$default

Return Value

mixed

Enumerable groupBy(array|callable|string $groupBy, bool $preserveKeys = false)

Group an associative array by a field or using a callback.

Parameters

array\|callable\|string	$groupBy
bool	$preserveKeys

Return Value

Enumerable

Enumerable keyBy(callable|string $keyBy)

Key an associative array by a field or using a callback.

Parameters

callable|string

$keyBy

Return Value

Enumerable

bool has(mixed $key)

Determine if an item exists in the collection by key.

Parameters

mixed

$key

Return Value

bool

string implode(string $value, string|null $glue = null)

Concatenate values of a given key as a string.

Parameters

string	$value
string\|null	$glue

Return Value

string

Enumerable intersect(mixed $items)

Intersect the collection with the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable intersectByKeys(mixed $items)

Intersect the collection with the given items by key.

Parameters

mixed

$items

Return Value

Enumerable

bool isEmpty()

Determine if the items is empty or not.

Return Value

bool

string join(string $glue, string $finalGlue = '')

Join all items from the collection using a string. The final items can use a separate glue string.

Parameters

string	$glue
string	$finalGlue

Return Value

string

Enumerable keys()

Get the keys of the collection items.

Return Value

Enumerable

mixed last(callable $callback = null, mixed $default = null)

Get the last item from the collection.

Parameters

callable	$callback
mixed	$default

Return Value

mixed

Enumerable pluck(string|array $value, string|null $key = null)

Get the values of a given key.

Parameters

string\|array	$value
string\|null	$key

Return Value

Enumerable

Enumerable map(callable $callback)

Run a map over each of the items.

Parameters

callable

$callback

Return Value

Enumerable

Enumerable mapToDictionary(callable $callback)

Run a dictionary map over the items.

The callback should return an associative array with a single key/value pair.

Parameters

callable

$callback

Return Value

Enumerable

Enumerable mapWithKeys(callable $callback)

Run an associative map over each of the items.

The callback should return an associative array with a single key/value pair.

Parameters

callable

$callback

Return Value

Enumerable

Enumerable merge(mixed $items)

Merge the collection with the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable mergeRecursive(mixed $items)

Recursively merge the collection with the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable combine(mixed $values)

Create a collection by using this collection for keys and another for its values.

Parameters

mixed

$values

Return Value

Enumerable

Enumerable union(mixed $items)

Union the collection with the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable nth(int $step, int $offset = 0)

Create a new collection consisting of every n-th element.

Parameters

int	$step
int	$offset

Return Value

Enumerable

Enumerable only(mixed $keys)

Get the items with the specified keys.

Parameters

mixed

$keys

Return Value

Enumerable

Enumerable concat(iterable $source)

Push all of the given items onto the collection.

Parameters

iterable

$source

Return Value

Enumerable

Enumerable|mixed random(int|null $number = null)

Get one or a specified number of items randomly from the collection.

Parameters

int|null

$number

Return Value

Enumerable|mixed

Exceptions

InvalidArgumentException

mixed reduce(callable $callback, mixed $initial = null)

Reduce the collection to a single value.

Parameters

callable	$callback
mixed	$initial

Return Value

mixed

Enumerable replace(mixed $items)

Replace the collection items with the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable replaceRecursive(mixed $items)

Recursively replace the collection items with the given items.

Parameters

mixed

$items

Return Value

Enumerable

Enumerable reverse()

Reverse items order.

Return Value

Enumerable

mixed search(mixed $value, bool $strict = false)

Search the collection for a given value and return the corresponding key if successful.

Parameters

mixed	$value
bool	$strict

Return Value

mixed

Enumerable shuffle(int|null $seed = null)

Shuffle the items in the collection.

Parameters

int|null

$seed

Return Value

Enumerable

Enumerable skip(int $count)

Skip the first {$count} items.

Parameters

int

$count

Return Value

Enumerable

Enumerable skipUntil(mixed $value)

Skip items in the collection until the given condition is met.

Parameters

mixed

$value

Return Value

Enumerable

Enumerable skipWhile(mixed $value)

Skip items in the collection while the given condition is met.

Parameters

mixed

$value

Return Value

Enumerable

Enumerable slice(int $offset, int|null $length = null)

Get a slice of items from the enumerable.

Parameters

int	$offset
int\|null	$length

Return Value

Enumerable

Enumerable split(int $numberOfGroups)

Split a collection into a certain number of groups.

Parameters

int

$numberOfGroups

Return Value

Enumerable

Enumerable chunk(int $size)

Chunk the collection into chunks of the given size.

Parameters

int

$size

Return Value

Enumerable

Enumerable chunkWhile(callable $callback)

Chunk the collection into chunks with a callback.

Parameters

callable

$callback

Return Value

Enumerable

Enumerable sort(callable|null|int $callback = null)

Sort through each item with a callback.

Parameters

callable|null|int

$callback

Return Value

Enumerable

Enumerable sortDesc(int $options = SORT_REGULAR)

Sort items in descending order.

Parameters

int

$options

Return Value

Enumerable

Enumerable sortBy(callable|string $callback, int $options = SORT_REGULAR, bool $descending = false)

Sort the collection using the given callback.

Parameters

callable\|string	$callback
int	$options
bool	$descending

Return Value

Enumerable

Enumerable sortByDesc(callable|string $callback, int $options = SORT_REGULAR)

Sort the collection in descending order using the given callback.

Parameters

callable\|string	$callback
int	$options

Return Value

Enumerable

Enumerable sortKeys(int $options = SORT_REGULAR, bool $descending = false)

Sort the collection keys.

Parameters

int	$options
bool	$descending

Return Value

Enumerable

Enumerable sortKeysDesc(int $options = SORT_REGULAR)

Sort the collection keys in descending order.

Parameters

int

$options

Return Value

Enumerable

Enumerable take(int $limit)

Take the first or last {$limit} items.

Parameters

int

$limit

Return Value

Enumerable

Enumerable takeUntil(mixed $value)

Take items in the collection until the given condition is met.

Parameters

mixed

$value

Return Value

Enumerable

LazyCollection takeUntilTimeout(DateTimeInterface $timeout)

Take items in the collection until a given point in time.

Parameters

DateTimeInterface

$timeout

Return Value

LazyCollection

Enumerable takeWhile(mixed $value)

Take items in the collection while the given condition is met.

Parameters

mixed

$value

Return Value

Enumerable

LazyCollection tapEach(callable $callback)

Pass each item in the collection to the given callback, lazily.

Parameters

callable

$callback

Return Value

LazyCollection

Enumerable values()

Reset the keys on the underlying array.

Return Value

Enumerable

Enumerable zip(mixed $items)

Zip the collection together with one or more arrays.

e.g. new LazyCollection([1, 2, 3])->zip([4, 5, 6]); => [[1, 4], [2, 5], [3, 6]]

Parameters

mixed

$items

Return Value

Enumerable

Enumerable pad(int $size, mixed $value)

Pad collection to the specified length with a value.

Parameters

int	$size
mixed	$value

Return Value

Enumerable

Traversable getIterator()

Get the values iterator.

Return Value

Traversable

int count()

Count the number of items in the collection.

Return Value

int

protected Traversable makeIterator(mixed $source)

Make an iterator from the given source.

Parameters

mixed

$source

Return Value

Traversable

protected array explodePluckParameters(string|array $value, string|array|null $key)

Explode the "value" and "key" arguments passed to "pluck".

Parameters

string\|array	$value
string\|array\|null	$key

Return Value

array

protected LazyCollection passthru(string $method, array $params)

Pass this lazy collection through a method on the collection class.

Parameters

string	$method
array	$params

Return Value

LazyCollection

protected int now()

Get the current time.

Return Value

int

© Taylor Otwell
Licensed under the MIT License.
Laravel is a trademark of Taylor Otwell.
https://laravel.com/api/8.x/Illuminate/Support/LazyCollection.html