Online PHP editor | refs for tBcEJ

<?php class Data implements \ArrayAccess, \Countable, \IteratorAggregate { /** * * Key-value pairs of data. * * @var array * */ protected $data = []; /** * * Constructor. * * @param array $data The data for this object. * */ public function __construct(array $data = []) { $this->data = $data; } /** * * ArrayAccess: does the requested key exist? * * @param int|string $key The requested key. * * @return bool * */ public function offsetExists($key) { return array_key_exists($key, $this->data); } /** * * ArrayAccess: get a key value. * * @param int|string $key The requested key. * * @return mixed * */ public function offsetGet($key) { return $this->data[$key]; } /** * * ArrayAccess: set a key value. * * @param int|string $key The requested key. * * @param mixed $val The value to set it to. * * @return void * */ public function offsetSet($key, $val) { $this->data[$key] = $val; } /** * * ArrayAccess: unset a key. * * @param int|string $key The requested key. * * @return void * */ public function offsetUnset($key) { unset($this->data[$key]); } /** * * Countable: how many keys are there? * * @return int * */ public function count() { return count($this->data); } /** * * IteratorAggregate: returns an external iterator for this struct. * * @return DataIterator * */ public function getIterator() { return new DataIterator($this, array_keys($this->data)); } }