Defined (1)

The function is defined in the following location(s).

/wp-includes/general-template.php  

function feed_links_extra( $args = array() ) { 
    $defaults = array( 
        /** translators: Separator between blog name and feed type in feed links */ 
        'separator' => _x('»', 'feed link'),  
        /** translators: 1: blog name, 2: separator(raquo), 3: post title */ 
        'singletitle' => __('%1$s %2$s %3$s Comments Feed'),  
        /** translators: 1: blog name, 2: separator(raquo), 3: category name */ 
        'cattitle' => __('%1$s %2$s %3$s Category Feed'),  
        /** translators: 1: blog name, 2: separator(raquo), 3: tag name */ 
        'tagtitle' => __('%1$s %2$s %3$s Tag Feed'),  
        /** translators: 1: blog name, 2: separator(raquo), 3: term name, 4: taxonomy singular name */ 
        'taxtitle' => __('%1$s %2$s %3$s %4$s Feed'),  
        /** translators: 1: blog name, 2: separator(raquo), 3: author name  */ 
        'authortitle' => __('%1$s %2$s Posts by %3$s Feed'),  
        /** translators: 1: blog name, 2: separator(raquo), 3: search phrase */ 
        'searchtitle' => __('%1$s %2$s Search Results for “%3$s” Feed'),  
        /** translators: 1: blog name, 2: separator(raquo), 3: post type name */ 
        'posttypetitle' => __('%1$s %2$s %3$s Feed'),  
 ); 
 
    $args = wp_parse_args( $args, $defaults ); 
 
    if ( is_singular() ) { 
        $id = 0; 
        $post = get_post( $id ); 
 
        if ( comments_open() || pings_open() || $post->comment_count > 0 ) { 
            $title = sprintf( $args['singletitle'], get_bloginfo('name'), $args['separator'], the_title_attribute( array( 'echo' => false ) ) ); 
            $href = get_post_comments_feed_link( $post->ID ); 
        } 
    } elseif ( is_post_type_archive() ) { 
        $post_type = get_query_var( 'post_type' ); 
        if ( is_array( $post_type ) ) 
            $post_type = reset( $post_type ); 
 
        $post_type_obj = get_post_type_object( $post_type ); 
        $title = sprintf( $args['posttypetitle'], get_bloginfo( 'name' ), $args['separator'], $post_type_obj->labels->name ); 
        $href = get_post_type_archive_feed_link( $post_type_obj->name ); 
    } elseif ( is_category() ) { 
        $term = get_queried_object(); 
 
        if ( $term ) { 
            $title = sprintf( $args['cattitle'], get_bloginfo('name'), $args['separator'], $term->name ); 
            $href = get_category_feed_link( $term->term_id ); 
        } 
    } elseif ( is_tag() ) { 
        $term = get_queried_object(); 
 
        if ( $term ) { 
            $title = sprintf( $args['tagtitle'], get_bloginfo('name'), $args['separator'], $term->name ); 
            $href = get_tag_feed_link( $term->term_id ); 
        } 
    } elseif ( is_tax() ) { 
         $term = get_queried_object(); 
         $tax = get_taxonomy( $term->taxonomy ); 
         $title = sprintf( $args['taxtitle'], get_bloginfo('name'), $args['separator'], $term->name, $tax->labels->singular_name ); 
         $href = get_term_feed_link( $term->term_id, $term->taxonomy ); 
    } elseif ( is_author() ) { 
        $author_id = intval( get_query_var('author') ); 
 
        $title = sprintf( $args['authortitle'], get_bloginfo('name'), $args['separator'], get_the_author_meta( 'display_name', $author_id ) ); 
        $href = get_author_feed_link( $author_id ); 
    } elseif ( is_search() ) { 
        $title = sprintf( $args['searchtitle'], get_bloginfo('name'), $args['separator'], get_search_query( false ) ); 
        $href = get_search_feed_link(); 
    } elseif ( is_post_type_archive() ) { 
        $title = sprintf( $args['posttypetitle'], get_bloginfo('name'), $args['separator'], post_type_archive_title( '', false ) ); 
        $post_type_obj = get_queried_object(); 
        if ( $post_type_obj ) 
            $href = get_post_type_archive_feed_link( $post_type_obj->name ); 
    } 
 
    if ( isset($title) && isset($href) ) 
        echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( $title ) . '" href="' . esc_url( $href ) . '" />' . "\n"; 
}