A collection is an immutable list of elements with a handful of functions to iterate, group, transform and extract information from it.
Returns an array that can be used to describe the internal state of this object.
Returns a string representation of this object that can be used to reconstruct it
__call( string $name , array $args )
Throws an exception.
Collection doesn't permit access to methods of the inner iterator.
$name
$args
__construct( array|Traversable $items )
Constructor. You can provide an array or any traversable object
$items
IteratorIterator::__construct()
__debugInfo( )
Returns an array that can be used to describe the internal state of this object.
serialize( )
Returns a string representation of this object that can be used to reconstruct it
Serializable::serialize()
unserialize( string $collection )
Unserializes the passed string and rebuilds the Collection instance
$collection
Serializable::unserialize()
_unwrap( )
append( $items )
avg( $matcher null )
cartesianProduct( callable $operation null , callable $filter null )
Cake\Collection\CollectionInterface
chunk( $chunkSize )
chunkWithKeys( $chunkSize , $preserveKeys true )
combine( $keyPath , $valuePath , $groupPath null )
compile( $preserveKeys true )
contains( $value )
countBy( $callback )
each( callable $c )
every( callable $c )
extract( $matcher )
first( )
firstMatch( array $conditions )
groupBy( $callback )
indexBy( $callback )
isEmpty( )
jsonSerialize( )
last( )
listNested( $dir 'desc' , $nestingKey 'children' )
Cake\Collection\Iterator\TreeIterator
match( array $conditions )
max( $callback , $type SORT_NUMERIC )
median( $matcher null )
min( $callback , $type SORT_NUMERIC )
nest( $idPath , $parentPath , $nestingKey 'children' )
optimizeUnwrap( )
Unwraps this iterator and returns the simplest traversable that can be used for getting the data out
reduce( callable $c , $zero null )
sample( $size 10 )
shuffle( )
skip( $howMany )
some( callable $c )
sortBy( $callback , $dir SORT_DESC , $type SORT_NUMERIC )
sumOf( $matcher null )
take( $size 1 , $from 0 )
through( callable $handler )
toArray( $preserveKeys true )
toList( )
unfold( callable $transformer null )
unwrap( )
zip( $items )
zipWith( $items , $callable )
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https://api.cakephp.org/3.5/class-Cake.Collection.Collection.html