wp_plugin_directory_constants()

174function wp_plugin_directory_constants() {175	if ( ! defined( 'WP_CONTENT_URL' ) ) {176		define( 'WP_CONTENT_URL', get_option( 'siteurl' ) . '/wp-content' ); // Full URL - WP_CONTENT_DIR is defined further up.177	}178 179	/**180	 * Allows for the plugins directory to be moved from the default location.181	 *182	 * @since 2.6.0183	 */184	if ( ! defined( 'WP_PLUGIN_DIR' ) ) {185		define( 'WP_PLUGIN_DIR', WP_CONTENT_DIR . '/plugins' ); // Full path, no trailing slash.186	}187 188	/**189	 * Allows for the plugins directory to be moved from the default location.190	 *191	 * @since 2.6.0192	 */193	if ( ! defined( 'WP_PLUGIN_URL' ) ) {194		define( 'WP_PLUGIN_URL', WP_CONTENT_URL . '/plugins' ); // Full URL, no trailing slash.195	}196 197	/**198	 * Allows for the plugins directory to be moved from the default location.199	 *200	 * @since 2.1.0201	 * @deprecated202	 */203	if ( ! defined( 'PLUGINDIR' ) ) {204		define( 'PLUGINDIR', 'wp-content/plugins' ); // Relative to ABSPATH. For back compat.205	}206 207	/**208	 * Allows for the mu-plugins directory to be moved from the default location.209	 *210	 * @since 2.8.0211	 */212	if ( ! defined( 'WPMU_PLUGIN_DIR' ) ) {213		define( 'WPMU_PLUGIN_DIR', WP_CONTENT_DIR . '/mu-plugins' ); // Full path, no trailing slash.214	}215 216	/**217	 * Allows for the mu-plugins directory to be moved from the default location.218	 *219	 * @since 2.8.0220	 */221	if ( ! defined( 'WPMU_PLUGIN_URL' ) ) {222		define( 'WPMU_PLUGIN_URL', WP_CONTENT_URL . '/mu-plugins' ); // Full URL, no trailing slash.223	}224 225	/**226	 * Allows for the mu-plugins directory to be moved from the default location.227	 *228	 * @since 2.8.0229	 * @deprecated230	 */231	if ( ! defined( 'MUPLUGINDIR' ) ) {232		define( 'MUPLUGINDIR', 'wp-content/mu-plugins' ); // Relative to ABSPATH. For back compat.233	}234}