129 lines
3.4 KiB
PHP
129 lines
3.4 KiB
PHP
<?php
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namespace Doctrine\Common\Collections;
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/**
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* The missing (SPL) Collection/Array interface.
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* A Collection resembles the nature of a regular PHP array. That is,
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* it is essentially an ordered map that can syntactically also be used
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* like a list.
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*
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* @author Roman Borschel <roman@code-factory.org>
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* @since 2.0
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*/
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interface Collection extends \Countable, \IteratorAggregate, \ArrayAccess
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{
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/**
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* Adds an element to the collection.
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*
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* @param mixed $element The element to add.
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* @return boolean Always TRUE.
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*/
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function add($element);
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/**
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* Clears the collection.
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*/
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function clear();
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/**
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* Checks whether an element is contained in the collection.
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* This is an O(n) operation.
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*
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* @param mixed $element The element to check for.
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* @return boolean TRUE if the collection contains the element, FALSE otherwise.
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*/
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function contains($element);
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/**
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* Checks whether the collection is empty.
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*
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* @return boolean TRUE if the collection is empty, FALSE otherwise.
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*/
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function isEmpty();
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/**
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* Removes the element with the specified key/index from the collection.
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*
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* @param string|integer $key The key/index of the element to remove.
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* @return mixed The removed element or NULL, if the collection did not contain the element.
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*/
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function remove($key);
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/**
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* Removes an element from the collection.
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*
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* @param mixed $element The element to remove.
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* @return mixed The removed element or NULL, if the collection did not contain the element.
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*/
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function removeElement($element);
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/**
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* Checks whether the collection contains an element with the specified key/index.
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*
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* @param string|integer $key The key/index to check for.
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* @return boolean TRUE if the collection contains an element with the specified key/index,
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* FALSE otherwise.
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*/
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function containsKey($key);
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/**
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* Gets an element with a specified key / at a specified index.
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*
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* @param string|integer $key The key/index of the element to retrieve.
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* @return mixed
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*/
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function get($key);
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/**
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* Gets all keys/indices of the collection.
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*
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* @return array The keys/indices of the collection, in the order of the corresponding
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* elements in the collection.
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*/
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function getKeys();
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/**
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* Gets all values of the collection.
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*
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* @return array The values of all elements in the collection, in the order they
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* appear in the collection.
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*/
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function getValues();
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/**
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* Sets an element in the collection at the specified key/index.
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*
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* @param string|integer $key The key/index of the element to set.
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* @param mixed $value The element to set.
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*/
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function set($key, $value);
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/**
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* Counts the elements in the collection.
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*
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* @return integer The number of elements in the collection.
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*/
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//function count();
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/**
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* Gets a plain PHP array representation of the collection.
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*
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* @return array
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*/
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function toArray();
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/**
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* Gets the first element of the collection.
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*
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* @return mixed
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*/
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function first();
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/**
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* Gets the last element of the collection.
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*
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* @return mixed
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*/
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function last();
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} |