wp_get_active_and_valid_plugins

wp_get_active_and_valid_plugins: 这个函数返回一个活动和有效插件的数组。它扫描插件目录并检索所有以”.php”结尾的文件的列表。然后它检查每个文件以确保它有一个有效的插件头。

检索一个活跃和有效的插件文件数组。

在升级或安装WordPress时，不返回插件。

默认目录是`wp-content/plugins`。要手动改变默认目录，在`wp-config.php`中定义`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`。

function wp_get_active_and_valid_plugins() {
	$plugins        = array();
	$active_plugins = (array) get_option( 'active_plugins', array() );

	// Check for hacks file if the option is enabled.
	if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) {
		_deprecated_file( 'my-hacks.php', '1.5.0' );
		array_unshift( $plugins, ABSPATH . 'my-hacks.php' );
	}

	if ( empty( $active_plugins ) || wp_installing() ) {
		return $plugins;
	}

	$network_plugins = is_multisite() ? wp_get_active_network_plugins() : false;

	foreach ( $active_plugins as $plugin ) {
		if ( ! validate_file( $plugin )                     // $plugin must validate as file.
			&& '.php' === substr( $plugin, -4 )             // $plugin must end with '.php'.
			&& file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist.
			// Not already included as a network plugin.
			&& ( ! $network_plugins || ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins, true ) )
			) {
			$plugins[] = WP_PLUGIN_DIR . '/' . $plugin;
		}
	}

	/*
	 * Remove plugins from the list of active plugins when we're on an endpoint
	 * that should be protected against WSODs and the plugin is paused.
	 */
	if ( wp_is_recovery_mode() ) {
		$plugins = wp_skip_paused_plugins( $plugins );
	}

	return $plugins;
}