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Example of using Iterator, Countable, ArrayAccess, JsonSerializable and Serializable PHP interfaces
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| <?php | |
| namespace Aperitips; | |
| /** | |
| * Class Collection. | |
| * | |
| * Example of using Iterator, Countable, ArrayAccess, JsonSerializable and Serializable interfaces | |
| * | |
| * @author Romain Monteil <monteil.romain@gmail.com> | |
| * @package Aperitips | |
| */ | |
| class Collection implements \Iterator, \Countable, \ArrayAccess, \JsonSerializable, \Serializable | |
| { | |
| /** | |
| * @var integer | |
| */ | |
| protected $index = 0; | |
| /** | |
| * @var array | |
| */ | |
| protected $entries = []; | |
| /** | |
| * Collection constructor. | |
| * | |
| * @param array $array | |
| */ | |
| public function __construct(array $array = []) | |
| { | |
| foreach ($array as $value) { | |
| $this->entries[] = $value; | |
| } | |
| } | |
| /** | |
| * @return mixed | |
| */ | |
| public function current() | |
| { | |
| return $this->entries[$this->index]; | |
| } | |
| public function next(): void | |
| { | |
| ++$this->index; | |
| } | |
| /** | |
| * @return int|mixed | |
| */ | |
| public function key() | |
| { | |
| return $this->index; | |
| } | |
| /** | |
| * @return bool | |
| */ | |
| public function valid(): bool | |
| { | |
| return isset($this->entries[$this->index]); | |
| } | |
| public function rewind(): void | |
| { | |
| $this->index = 0; | |
| } | |
| /** | |
| * @param mixed $offset | |
| * | |
| * @return bool | |
| */ | |
| public function offsetExists($offset): bool | |
| { | |
| return isset($this->entries[$offset]); | |
| } | |
| /** | |
| * @param mixed $offset | |
| * | |
| * @return mixed|null | |
| */ | |
| public function offsetGet($offset) | |
| { | |
| return $this->entries[$offset] ?? null; | |
| } | |
| public function offsetSet($offset, $value): void | |
| { | |
| if ($offset === null) { | |
| $this->entries[] = $value; | |
| } else { | |
| $this->entries[$offset] = $value; | |
| } | |
| } | |
| public function offsetUnset($offset): void | |
| { | |
| unset($this->entries[$offset]); | |
| } | |
| public function count(): int | |
| { | |
| return \count($this->entries); | |
| } | |
| public function toArray(): array | |
| { | |
| return $this->entries; | |
| } | |
| /** | |
| * @return array | |
| */ | |
| public function jsonSerialize(): array | |
| { | |
| return $this->toArray(); | |
| } | |
| /** | |
| * @return string | |
| */ | |
| public function serialize(): string | |
| { | |
| return serialize($this->entries); | |
| } | |
| /** | |
| * @param string $serialized | |
| */ | |
| public function unserialize($serialized) | |
| { | |
| $this->entries = unserialize($serialized, [Collection::class]); | |
| } | |
| } | |
| $collection = new Collection([ | |
| [ | |
| 'fistName' => 'Romain', | |
| 'lastName' => 'Monteil', | |
| 'age' => 30, | |
| 'frontEnd' => false, | |
| 'backEnd' => true, | |
| 'designer' => false, | |
| 'funny' => 'HELL YEAH', | |
| ], | |
| [ | |
| 'fistName' => 'Matthieu', | |
| 'lastName' => 'Pétel', | |
| 'age' => 26, | |
| 'frontEnd' => true, | |
| 'backEnd' => false, | |
| 'designer' => false, | |
| 'funny' => 'FUCK NO', | |
| ], | |
| [ | |
| 'fistName' => 'Simon', | |
| 'lastName' => 'Kabab', | |
| 'age' => 23, | |
| 'frontEnd' => false, | |
| 'backEnd' => false, | |
| 'designer' => true, | |
| 'funny' => 'YEAH', | |
| ], | |
| ]); | |
| echo "--------------------\n"; | |
| echo "\Countable\n"; | |
| echo "--------------------\n"; | |
| var_dump(\count($collection)); | |
| echo "\n"; | |
| echo "\n"; | |
| echo "--------------------\n"; | |
| echo "\Iterator\n"; | |
| echo "--------------------\n"; | |
| foreach ($collection as $key => $value) { | |
| var_dump($key, $value); | |
| echo "\n"; | |
| } | |
| echo "\n"; | |
| echo "\n"; | |
| echo "--------------------\n"; | |
| echo "\ArrayAccess\n"; | |
| echo "--------------------\n"; | |
| var_dump($collection[0]); | |
| var_dump(isset($collection[1])); | |
| unset($collection[2]); | |
| var_dump(isset($collection[2])); | |
| $collection[] = [ | |
| 'fistName' => 'Thibault', | |
| 'lastName' => 'Desmoulin', | |
| 'age' => 29, | |
| 'frontEnd' => false, | |
| 'backEnd' => false, | |
| 'designer' => false, | |
| 'funny' => 'HELL YEAH', | |
| ]; | |
| var_dump($collection); | |
| echo "\n"; | |
| echo "\n"; | |
| echo "--------------------\n"; | |
| echo "\Serializable\n"; | |
| echo "--------------------\n"; | |
| $serialize = serialize($collection); | |
| var_dump($serialize); | |
| echo "\n"; | |
| $newCollection = unserialize($serialize, [Collection::class]); | |
| var_dump($newCollection->toArray()); | |
| echo "\n"; | |
| echo "\n"; | |
| echo "--------------------\n"; | |
| echo "\JsonSerializable\n"; | |
| echo "--------------------\n"; | |
| var_dump(json_encode($collection)); |
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