Elgg\Collections\Collection Class Reference

A collection of unique items. More...

Inheritance diagram for Elgg\Collections\Collection:

Public Member Functions
	__construct ($items=[], $item_class=null)
	Constructor. More...
	all ()
	{Returns all collection items by reference. Returns CollectionItemInterface[] } More...
	count ()
	{Count collection items. Returns int } More...
	add ($item)
	{Add a new item to collection. Parameters CollectionItemInterface $item Item Returns static } More...
	get ($id)
	{Get an item by its ID. Parameters string | int $id ID Returns CollectionItemInterface|null } More...
	has ($id)
	{Check if collection has an item with a given ID. Parameters string | int $id ID Returns bool } More...
	remove ($id)
	{Remove item from collection by its ID. Parameters string | int $id ID Returns static } More...
	fill ($items)
	{Replace collection items. Parameters CollectionItemInterface[]|Collection $items Items Returns static } More...
	merge ($items)
	{Add new items to collection, replacing items with matching IDs. Parameters CollectionItemInterface[]|Collection $items Items Returns static } More...
	filter (callable $callback=null)
	{Filter collection items using a custom filter Returns a new collection instance. Parameters callable $callback Filter Returns static } More...
	sort (callable $callback=null)
	{Sort fields using custom callable If not provided, will sort items by priority. Parameters callable $callback Sorter Returns static } More...
	walk (callable $callback)
	Walk through members of the collection and apply a callback. More...
	map (callable $callback)
	{Walk through all items in the collection and apply a callback. Parameters callable $callback Mapper Returns mixed } More...
	offsetExists ($offset)
	ArrayAccess interface functions. More...
	offsetGet ($offset)
	{} More...
	offsetSet ($offset, $value)
	{} More...
	offsetUnset ($offset)
	{} More...
	current ()
	SeekableIterator interface functions. More...
	next ()
	{} More...
	key ()
	{} More...
	valid ()
	{} More...
	rewind ()
	{} More...
	seek ($position)
	{} More...

Protected Member Functions
	assertValidItem ($item)
	Validate if item is a valid collection item. More...

Protected Attributes
	$items = []
	$item_class
	$position

Detailed Description

A collection of unique items.

Definition at line 15 of file Collection.php.

Constructor & Destructor Documentation

Elgg\Collections\Collection::__construct	(		$items = [],
			$item_class = null
	)

Constructor.

Parameters

	CollectionItemInterface[]	$items Items
string	$item_class	Member class Restrict members of the collection to instances of this class

Definition at line 42 of file Collection.php.

Member Function Documentation

Elgg\Collections\Collection::add

(

$item

)

{Add a new item to collection.

Parameters

CollectionItemInterface

$item

Item

Returns

static

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 90 of file Collection.php.

Elgg\Collections\Collection::all

(

)

{Returns all collection items by reference.

Returns

CollectionItemInterface[]

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 75 of file Collection.php.

Elgg\Collections\Collection::assertValidItem (   $item )

protected

Validate if item is a valid collection item.

Parameters

mixed

$item

Item

Returns

void

Exceptions

Definition at line 64 of file Collection.php.

Elgg\Collections\Collection::count

(

)

{Count collection items.

Returns

int

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 83 of file Collection.php.

Elgg\Collections\Collection::current

(

)

SeekableIterator interface functions.

{}

Definition at line 263 of file Collection.php.

Elgg\Collections\Collection::fill

(

$items

)

{Replace collection items.

Parameters

CollectionItemInterface[]|Collection

$items Items

Returns

static

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 122 of file Collection.php.

Elgg\Collections\Collection::filter

(

callable

$callback = null

)

{Filter collection items using a custom filter Returns a new collection instance.

Parameters

callable

$callback

Filter

Returns

static

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 145 of file Collection.php.

Elgg\Collections\Collection::get

(

$id

)

{Get an item by its ID.

Parameters

string | int

$id

ID

Returns

CollectionItemInterface|null

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 101 of file Collection.php.

Elgg\Collections\Collection::has

(

$id

)

{Check if collection has an item with a given ID.

Parameters

string | int

$id

ID

Returns

bool

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 108 of file Collection.php.

Elgg\Collections\Collection::key

(

)

{}

Definition at line 281 of file Collection.php.

Elgg\Collections\Collection::map

(

callable

$callback

)

{Walk through all items in the collection and apply a callback.

Parameters

callable

$callback

Mapper

Returns

mixed

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 200 of file Collection.php.

Elgg\Collections\Collection::merge

(

$items

)

{Add new items to collection, replacing items with matching IDs.

Parameters

CollectionItemInterface[]|Collection

$items Items

Returns

static

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 134 of file Collection.php.

Elgg\Collections\Collection::next

(

)

{}

Definition at line 273 of file Collection.php.

Elgg\Collections\Collection::offsetExists

(

$offset

)

ArrayAccess interface functions.

{}

Definition at line 219 of file Collection.php.

Elgg\Collections\Collection::offsetGet

(

$offset

)

{}

Definition at line 227 of file Collection.php.

Elgg\Collections\Collection::offsetSet	(		$offset,
			$value
	)

{}

Definition at line 235 of file Collection.php.

Elgg\Collections\Collection::offsetUnset

(

$offset

)

{}

Definition at line 246 of file Collection.php.

Elgg\Collections\Collection::remove

(

$id

)

{Remove item from collection by its ID.

Parameters

string | int

$id

ID

Returns

static

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 115 of file Collection.php.

Elgg\Collections\Collection::rewind

(

)

{}

Definition at line 301 of file Collection.php.

Elgg\Collections\Collection::seek

(

$position

)

{}

Definition at line 309 of file Collection.php.

Elgg\Collections\Collection::sort

(

callable

$callback = null

)

{Sort fields using custom callable If not provided, will sort items by priority.

Parameters

callable

$callback

Sorter

Returns

static

}

Implements Elgg\Collections\CollectionInterface.

Definition at line 158 of file Collection.php.

Elgg\Collections\Collection::valid

(

)

{}

Definition at line 291 of file Collection.php.

Elgg\Collections\Collection::walk

(

callable

$callback

)

Walk through members of the collection and apply a callback.

Unlike CollectionInterface::map(), this method does not return the result of mapping, rather returns the exact same instance of the collection after walking through its members by reference

See also

CollectionInterface::map()

Parameters

callable

$callback

Callback function

Returns

static

Implements Elgg\Collections\CollectionInterface.

Definition at line 189 of file Collection.php.

Member Data Documentation

Elgg\Collections\Collection::$item_class

protected

Definition at line 28 of file Collection.php.

Elgg\Collections\Collection::$items = []

protected

Definition at line 23 of file Collection.php.

Elgg\Collections\Collection::$position

protected

Definition at line 33 of file Collection.php.

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The documentation for this class was generated from the following file:

• engine/classes/Elgg/Collections/Collection.php