functions php page in a website is for code example
Example: wordpress functions.php
/**
* MyFirstTheme's functions and definitions
*
* @package MyFirstTheme
* @since MyFirstTheme 1.0
*/
/**
* First, let's set the maximum content width based on the theme's design and stylesheet.
* This will limit the width of all uploaded images and embeds.
*/
if ( ! isset( $content_width ) )
$content_width = 800; /* pixels */
if ( ! function_exists( 'myfirsttheme_setup' ) ) :
/**
* Sets up theme defaults and registers support for various WordPress features.
*
* Note that this function is hooked into the after_setup_theme hook, which runs
* before the init hook. The init hook is too late for some features, such as indicating
* support post thumbnails.
*/
function myfirsttheme_setup() {
/**
* Make theme available for translation.
* Translations can be placed in the /languages/ directory.
*/
load_theme_textdomain( 'myfirsttheme', get_template_directory() . '/languages' );
/**
* Add default posts and comments RSS feed links to <head>.
*/
add_theme_support( 'automatic-feed-links' );
/**
* Enable support for post thumbnails and featured images.
*/
add_theme_support( 'post-thumbnails' );
/**
* Add support for two custom navigation menus.
*/
register_nav_menus( array(
'primary' => __( 'Primary Menu', 'myfirsttheme' ),
'secondary' => __('Secondary Menu', 'myfirsttheme' )
) );
/**
* Enable support for the following post formats:
* aside, gallery, quote, image, and video
*/
add_theme_support( 'post-formats', array ( 'aside', 'gallery', 'quote', 'image', 'video' ) );
}
endif; // myfirsttheme_setup
add_action( 'after_setup_theme', 'myfirsttheme_setup' );