Created
July 31, 2021 23:30
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Create an iterrator collection that could be accesed as an array
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| <?php | |
| class Collection implements Iterator, ArrayAccess | |
| { | |
| private int $position; | |
| private array $array = []; | |
| public function __construct() { | |
| $this->position = 0; | |
| } | |
| public function current(): mixed { | |
| return $this->array[$this->position]; | |
| } | |
| public function next(): void { | |
| ++$this->position; | |
| } | |
| public function key(): int { | |
| return $this->position; | |
| } | |
| public function valid(): bool { | |
| return array_key_exists($this->position, $this->array); | |
| } | |
| public function rewind(): void { | |
| $this->position = 0; | |
| } | |
| public function offsetExists($offset): bool { | |
| return array_key_exists($offset, $this->array); | |
| } | |
| public function offsetGet($offset): mixed { | |
| return $this->array[$offset] ?? null; | |
| } | |
| public function offsetSet($offset, $value): void { | |
| if (is_null($offset)) { | |
| $this->array[] = $value; | |
| } else { | |
| $this->array[$offset] = $value; | |
| } | |
| } | |
| public function offsetUnset($offset): void { | |
| unset($this->array[$offset]); | |
| } | |
| } |
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