<?php
namespace Dropbox;
/**
* A class that gives get/put/clear access to a single entry in an array.
*/
class ArrayEntryStore implements ValueStore
{
/** @var array */
private $array;
/** @var mixed */
private $key;
/**
* Constructor.
*
* @param array $array
* The array that we'll be accessing.
*
* @param mixed $key
* The key for the array element we'll be accessing.
*/
function __construct(&$array, $key)
{
$this->array = &$array;
$this->key = $key;
}
/**
* Returns the entry's current value or <code>null</code> if nothing is set.
*
* @return object
*/
function get()
{
if (isset($this->array[$this->key])) {
return $this->array[$this->key];
} else {
return null;
}
}
/**
* Set the array entry to the given value.
*
* @param object $value
*/
function set($value)
{
$this->array[$this->key] = $value;
}
/**
* Clear the entry.
*/
function clear()
{
unset($this->array[$this->key]);
}
}