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Final class Phalcon\Registry

implements ArrayAccess, Countable, Iterator, Traversable

Source on GitHub

A registry is a container for storing objects and values in the application space. By storing the value in a registry, the same object is always available throughout your application.

<?php

$registry = new \Phalcon\Registry();

// Set value
$registry->something = "something";
// or
$registry["something"] = "something";

// Get value
$value = $registry->something;
// or
$value = $registry["something"];

// Check if the key exists
$exists = isset($registry->something);
// or
$exists = isset($registry["something"]);

// Unset
unset($registry->something);
// or
unset($registry["something"]);

In addition to ArrayAccess, Phalcon\Registry also implements Countable (count($registry) will return the number of elements in the registry), Serializable and Iterator (you can iterate over the registry using a foreach loop) interfaces. For PHP 5.4 and higher, JsonSerializable interface is implemented.

Phalcon\Registry is very fast (it is typically faster than any userspace implementation of the registry); however, this comes at a price: Phalcon\Registry is a final class and cannot be inherited from.

Though Phalcon\Registry exposes methods like __get(), offsetGet(), count() etc, it is not recommended to invoke them manually (these methods exist mainly to match the interfaces the registry implements): $registry->__get(“property”) is several times slower than $registry->property.

Internally all the magic methods (and interfaces except JsonSerializable) are implemented using object handlers or similar techniques: this allows to bypass relatively slow method calls.

Methods

final public __construct ()

Registry constructor

final public offsetExists (mixed $offset)

Checks if the element is present in the registry

final public offsetGet (mixed $offset)

Returns an index in the registry

final public offsetSet (mixed $offset, mixed $value)

Sets an element in the registry

final public offsetUnset (mixed $offset)

Unsets an element in the registry

final public count ()

Checks how many elements are in the register

final public next ()

Moves cursor to next row in the registry

final public key ()

Gets pointer number of active row in the registry

final public rewind ()

Rewinds the registry cursor to its beginning

public valid ()

Checks if the iterator is valid

public current ()

Obtains the current value in the internal iterator

final public __set (mixed $key, mixed $value)

Sets an element in the registry

final public __get (mixed $key)

Returns an index in the registry

final public __isset (mixed $key)

...

final public __unset (mixed $key)

...