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<?php |
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/** |
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* Declare class Cache_Per_Process |
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* For cache data to Lasso Cache class's attribute and only exist on per php process |
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* Destruct function will clear all attribute data before php close |
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* Use to cache data by key then use on next step. |
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* |
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* @package Cache_Per_Process |
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*/ |
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|
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namespace LassoLite\Classes; |
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|
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/** |
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* Cache_Per_Process |
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*/ |
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class Cache_Per_Process { |
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/** |
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* Class instance |
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* |
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* @var null class instance |
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*/ |
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private static $instance = null; |
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|
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/** |
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* Cache data |
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* |
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* @var array |
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*/ |
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protected $data = array(); |
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|
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/** |
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* Construction of Cache_Per_Process |
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*/ |
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private function __construct() { |
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} |
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|
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/** |
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* Singleton design pattern - Only get object of class one time |
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* |
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* @return Cache_Per_Process |
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*/ |
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public static function get_instance(): self { |
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if ( null === self::$instance ) { |
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self::$instance = new self(); |
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} |
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|
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return self::$instance; |
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} |
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|
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/** |
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* Get cache by key |
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* |
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* @param Cache key $key Cache key. |
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* @param Cache key $default Default value if cache is not exist. Default to false. |
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* @return bool|mixed |
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*/ |
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public function get_cache( $key, $default = false ) { |
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if ( array_key_exists( $key, $this->data ) ) { |
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return $this->data[ $key ]; |
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} |
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|
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return $default; |
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} |
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|
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/** |
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* Set cache key and value |
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* |
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* @param Cache key $key cache key. |
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* @param Cache value $value cache value. |
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*/ |
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public function set_cache( $key, $value ) { |
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if ( isset( $this->data[ $key ] ) ) { |
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return; |
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} |
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|
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$this->data[ $key ] = $value; |
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} |
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|
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/** |
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* Unset cache by key |
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* |
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* @param Cache key $key cache key. |
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*/ |
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public function un_set( $key ) { |
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if ( isset( $this->data[ $key ] ) ) { |
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unset( $this->data[ $key ] ); |
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} |
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} |
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|
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/** |
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* Destruct cache items |
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*/ |
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public function __destruct() { |
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$keys = array_keys( $this->data ); |
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array_walk( $keys, array( $this, 'un_set' ) ); |
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} |
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|
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/** |
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* Determine cache key. |
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* |
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* @param array|string $data Determine data. |
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* |
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* @return string |
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*/ |
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public static function determine_cache_key( $data ) { |
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return is_array( $data ) ? implode( '-', $data ) : (string) $data; |
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} |
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|
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/** |
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* Clear all cache key |
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*/ |
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public function clear_cache() { |
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$this->data = array(); |
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} |
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} |
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|
