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Source View: wp_cache_themes_persistently

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Line Code
173       * @param string $theme_dir Directory of the theme within the theme_root.
174       * @param string $theme_root Theme root.
175       * @param WP_Error|null $_child If this theme is a parent theme, the child may be passed for validation purposes.
176       */
177      public function __construct( $theme_dir, $theme_root, $_child = null ) {
178           global $wp_theme_directories;
179
180           // Initialize caching on first run.
181           if ( ! isset( self::$persistently_cache ) ) {
182                self::$persistently_cache = apply_filters( 'wp_cache_themes_persistently', false, 'WP_Theme' );
183                if ( self::$persistently_cache ) {
184                     wp_cache_add_global_groups( 'themes' );
185                     if ( is_int( self::$persistently_cache ) )
186                          self::$cache_expiration = self::$persistently_cache;
187                } else {
188                     wp_cache_add_non_persistent_groups( 'themes' );
189                }
190           }
191