askupasoftware / wp-dynamic-css

cache.php

<?php
/**
 * @package   WordPress Dynamic CSS
 * @version   1.0.5
 * @author    Askupa Software <contact@askupasoftware.com>
 * @link      https://github.com/askupasoftware/wp-dynamic-css
 * @copyright 2016 Askupa Software
 */

/**
 * Dynamic CSS Cache Handler
 */
class DynamicCSSCache {

	/**
	 * @var DynamicCSSCache The reference to *Singleton* instance of this class
	 */
	private static $instance;

	/**
	 * @var array The reference to the cached compiled CSS that is stored in the database
	 */
	private static $cache;

	/**
	 * Returns the *Singleton* instance of this class.
	 *
	 * @return DynamicCSSCache The *Singleton* instance.
	 */
	public static function get_instance() {

		if ( null === static::$instance ) {
			static::$instance = new static();
			self::load_cache();
		}
		return static::$instance;
	}

	/**
	 * Returns the compiled CSS for the given handle if it exists in the cache.
	 * Returns false otherwise.
	 *
	 * @param string $handle The handle of the stylesheet
	 * @return boolean|string
	 */
	public function get( $handle ) {

		if ( array_key_exists( $handle, self::$cache ) ) {
			return self::$cache[ $handle ];
		}
		return false;
	}

	/**
	 * Update the compiled CSS for the given handle.
	 *
	 * @param string $handle The handle of the stylesheet
	 * @param string $compiled_css
	 */
	public function update( $handle, $compiled_css, $expiration ) {

		self::$cache[ $handle ] = $compiled_css;
		$this->update_option( $expiration );
	}

	/**
	 * Clear the compiled CSS from cache for the given handle.
	 *
	 * @param string $handle The handle of the stylesheet
	 */
	public function clear( $handle ) {

		unset( self::$cache[ $handle ] );
		delete_transient( 'wp-dynamic-css-cache' );
	}

	/**
	 * Load the cache value from the database or create an empty array if the
	 * cache is empty.
	 */
	private static function load_cache() {

		if ( false === ( self::$cache = get_transient( 'wp-dynamic-css-cache' ) ) ) {
			self::$cache = [];
		}
		// self::$cache = get_option('wp-dynamic-css-cache');

59% of this comment could be valid code. Did you maybe forget this after debugging?

		//
		// if( false === self::$cache )

54% of this comment could be valid code. Did you maybe forget this after debugging?

		// {
		//     self::$cache = array();

64% of this comment could be valid code. Did you maybe forget this after debugging?

		// }
	}

	/**
	 * Update the database option with the local cache value.
	 */
	private function update_option( $expiration ) {

		// update_option('wp-dynamic-css-cache', self::$cache);

73% of this comment could be valid code. Did you maybe forget this after debugging?

		set_transient( 'wp-dynamic-css-cache', self::$cache, $expiration );
	}
}