76 lines
2 KiB
PHP
76 lines
2 KiB
PHP
<?php
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// ArrayCacheProvider.php
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// Created: 2024-04-10
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// Updated: 2024-04-10
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namespace Index\Cache\ArrayCache;
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use InvalidArgumentException;
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use Index\Cache\ICacheProvider;
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/**
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* Represents a dummy cache provider.
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*/
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class ArrayCacheProvider implements ICacheProvider {
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private array $items = [];
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public function get(string $key): mixed {
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if(!array_key_exists($key, $this->items))
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return null;
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$item = $this->items[$key];
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if($item['ttl'] > 0 && $item['ttl'] <= time()) {
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unset($this->items[$key]);
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return null;
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}
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return unserialize($item['value']);
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}
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public function set(string $key, mixed $value, int $ttl = 0): void {
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if($ttl < 0)
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throw new InvalidArgumentException('$ttl must be equal to or greater than 0');
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$this->items[$key] = [
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'value' => serialize($value),
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'ttl' => $ttl < 1 ? 0 : time() + $ttl,
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];
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}
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public function delete(string $key): void {
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if(array_key_exists($key, $this->items))
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unset($this->items[$key]);
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}
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public function touch(string $key, int $ttl = 0): void {
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if($ttl < 0)
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throw new InvalidArgumentException('$ttl must be equal to or greater than 0');
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if(array_key_exists($key, $this->items))
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$this->items[$key]['ttl'] = $ttl < 1 ? 0 : time() + $ttl;
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}
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public function increment(string $key, int $amount = 1): int {
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$exists = array_key_exists($key, $this->items);
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$value = $exists ? unserialize($this->items[$key]['value']) : 0;
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$value += $amount;
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$serialised = serialize($value);
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if($exists)
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$this->items[$key]['value'] = $serialised;
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else
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$this->items[$key] = [
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'value' => $serialised,
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'ttl' => 0,
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];
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return $value;
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}
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public function decrement(string $key, int $amount = 1): int {
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return $this->increment($key, $amount * -1);
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}
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public function close(): void {}
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}
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