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Source View: wp_cache_themes_persistently

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Line Code
198       * @param string $theme_root Theme root.
199       * @param WP_Error|void $_child If this theme is a parent theme, the child may be passed for validation purposes.
200       */
201      public function __construct( $theme_dir, $theme_root, $_child = null ) {
202           global $wp_theme_directories;
203
204           // Initialize caching on first run.
205           if ( ! isset( self::$persistently_cache ) ) {
206                /** This action is documented in wp-includes/theme.php */
207                self::$persistently_cache = apply_filters( 'wp_cache_themes_persistently', false, 'WP_Theme' );
208                if ( self::$persistently_cache ) {
209                     wp_cache_add_global_groups( 'themes' );
210                     if ( is_int( self::$persistently_cache ) )
211                          self::$cache_expiration = self::$persistently_cache;
212                } else {
213                     wp_cache_add_non_persistent_groups( 'themes' );
214                }
215           }
216