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/CakePHP 3.8

Class SortIterator

An iterator that will return the passed items in order. The order is given by the value returned in a callback function that maps each of the elements.

Example:

$items = [$user1, $user2, $user3];
$sorted = new SortIterator($items, function ($user) {
 return $user->age;
});

// output all user name order by their age in descending order
foreach ($sorted as $user) {
 echo $user->name;
}

This iterator does not preserve the keys passed in the original elements.

IteratorIterator implements Iterator, Traversable, OuterIterator
Extended by Cake\Collection\Collection implements Cake\Collection\CollectionInterface, Serializable uses Cake\Collection\CollectionTrait
Extended by Cake\Collection\Iterator\SortIterator

Method Summary

  • __construct() public

    Wraps this iterator around the passed items so when iterated they are returned in order.

  • unwrap() public

Method Detail

__construct()source public

__construct( array|Traversable $items , callable|string $callback , integer $dir = \SORT_DESC , integer $type = \SORT_NUMERIC )

Wraps this iterator around the passed items so when iterated they are returned in order.

The callback will receive as first argument each of the elements in $items, the value returned in the callback will be used as the value for sorting such element. Please note that the callback function could be called more than once per element.

Parameters

array|Traversable $items
The values to sort
callable|string $callback

A function used to return the actual value to be compared. It can also be a string representing the path to use to fetch a column or property in each element

integer $dir optional \SORT_DESC
either SORT_DESC or SORT_ASC
integer $type optional \SORT_NUMERIC

the type of comparison to perform, either SORT_STRING SORT_NUMERIC or SORT_NATURAL

Throws

InvalidArgumentException
If passed incorrect type for items.

Overrides

Cake\Collection\Collection::__construct()

unwrap()source public

unwrap( )

Returns

Iterator

Overrides

Cake\Collection\CollectionTrait::unwrap()

Methods inherited from Cake\Collection\Collection

__debugInfo()source public

__debugInfo( )

Returns an array that can be used to describe the internal state of this object.

Returns

array

count()source public

count( )

Returns the amount of elements in the collection.

Returns

integer

Implementation of

Cake\Collection\CollectionInterface::count()

countKeys()source public

countKeys( )

Returns the number of unique keys in this iterator. This is, the number of elements the collection will contain after calling toArray()

Returns

integer

Implementation of

Cake\Collection\CollectionInterface::countKeys()

serialize()source public

serialize( )

Returns a string representation of this object that can be used to reconstruct it

Returns

string

Implementation of

Serializable::serialize()

unserialize()source public

unserialize( string $collection )

Unserializes the passed string and rebuilds the Collection instance

Parameters

string $collection
The serialized collection

Implementation of

Serializable::unserialize()

Methods used from Cake\Collection\CollectionTrait

_unwrap()source public

_unwrap( )

append()source public

append( $items )

appendItem()source public

appendItem( $item , $key = null )

avg()source public

avg( $matcher = null )

buffered()source public

buffered( )

Returns

Cake\Collection\Iterator\BufferedIterator

cartesianProduct()source public

cartesianProduct( callable $operation = null , callable $filter = null )

Parameters

callable $operation optional null
Operation
callable $filter optional null
Filter

Returns

Cake\Collection\CollectionInterface

Throws

LogicException

chunk()source public

chunk( $chunkSize )

chunkWithKeys()source public

chunkWithKeys( $chunkSize , $preserveKeys = true )

combine()source public

combine( $keyPath , $valuePath , $groupPath = null )

compile()source public

compile( $preserveKeys = true )

contains()source public

contains( $value )

countBy()source public

countBy( $callback )

each()source public

each( callable $c )

every()source public

every( callable $c )

extract()source public

extract( $matcher )

filter()source public

filter( callable $c = null )

Returns

Cake\Collection\Iterator\FilterIterator

first()source public

first( )

firstMatch()source public

firstMatch( array $conditions )

groupBy()source public

groupBy( $callback )

indexBy()source public

indexBy( $callback )

insert()source public

insert( $path , $values )

Returns

Cake\Collection\Iterator\InsertIterator

isEmpty()source public

isEmpty( )

jsonSerialize()source public

jsonSerialize( )

last()source public

last( )

lazy()source public

lazy( )

listNested()source public

listNested( $dir = 'desc' , $nestingKey = 'children' )

Returns

Cake\Collection\Iterator\TreeIterator

map()source public

map( callable $c )

Returns

Cake\Collection\Iterator\ReplaceIterator

match()source public

match( array $conditions )

max()source public

max( $callback , $type = \SORT_NUMERIC )

median()source public

median( $matcher = null )

min()source public

min( $callback , $type = \SORT_NUMERIC )

nest()source public

nest( $idPath , $parentPath , $nestingKey = 'children' )

newCollection()source protected

newCollection( ... $args )

Returns a new collection.

Allows classes which use this trait to determine their own type of returned collection interface

Parameters

... $args
$args Constructor arguments.

Returns

Cake\Collection\CollectionInterface

optimizeUnwrap()source protected

optimizeUnwrap( )

Unwraps this iterator and returns the simplest traversable that can be used for getting the data out

Returns

Traversable|array

prepend()source public

prepend( $items )

prependItem()source public

prependItem( $item , $key = null )

reduce()source public

reduce( callable $c , $zero = null )

reject()source public

reject( callable $c )

Returns

Cake\Collection\Iterator\FilterIterator

sample()source public

sample( $size = 10 )

shuffle()source public

shuffle( )

skip()source public

skip( $howMany )

some()source public

some( callable $c )

sortBy()source public

sortBy( $callback , $dir = \SORT_DESC , $type = \SORT_NUMERIC )

stopWhen()source public

stopWhen( $condition )

Returns

Cake\Collection\Iterator\StoppableIterator

sumOf()source public

sumOf( $matcher = null )

take()source public

take( $size = 1 , $from = 0 )

takeLast()source public

takeLast( $howMany )

through()source public

through( callable $handler )

toArray()source public

toArray( $preserveKeys = true )

toList()source public

toList( )

transpose()source public

transpose( )

Returns

Cake\Collection\CollectionInterface

Throws

LogicException

unfold()source public

unfold( callable $transformer = null )

zip()source public

zip( $items )

zipWith()source public

zipWith( $items , $callable )

Magic methods inherited from Cake\Collection\CollectionInterface

cartesianProduct()

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https://api.cakephp.org/3.8/class-Cake.Collection.Iterator.SortIterator.html