
如何使用wp_nav_menu函数创建WordPress自定义菜单
validate_plugin ( $plugin )
Validates the plugin path.
Checks that the main plugin file exists and is a valid plugin. See validate_file().
function validate_plugin( $plugin ) { if ( validate_file( $plugin ) ) { return new WP_Error( 'plugin_invalid', __( 'Invalid plugin path.' ) ); } if ( ! file_exists( WP_PLUGIN_DIR . '/' . $plugin ) ) { return new WP_Error( 'plugin_not_found', __( 'Plugin file does not exist.' ) ); } $installed_plugins = get_plugins(); if ( ! isset( $installed_plugins[ $plugin ] ) ) { return new WP_Error( 'no_plugin_header', __( 'The plugin does not have a valid header.' ) ); } return 0; }