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Filename : template-functions.php

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<?php
/**
 * Functions which enhance the theme by hooking into WordPress
 * @package Files_Custom_Theme
 */

/**
 * Adds custom classes to the array of body classes.
 * @param array $classes Classes for the body element.
 * @return array
 */
function infopediya_body_classes($classes)
{
    // Adds a class of hfeed to non-singular pages.
    if (!is_singular()) {
        $classes[] = 'hfeed';
    }

    return $classes;
}

add_filter('body_class', 'infopediya_body_classes');

/**
 * Add a pingback url auto-discovery header for singularly identifiable articles.
 */
function infopediya_pingback_header()
{
    if (is_singular() && pings_open()) {
        echo '<link rel="pingback" href="', esc_url(get_bloginfo('pingback_url')), '">';
    }
}

add_action('wp_head', 'infopediya_pingback_header');