Title: How to overwrite default function from child theme
Last modified: August 22, 2016

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# How to overwrite default function from child theme

 *  [fildred13](https://wordpress.org/support/users/fildred13/)
 * (@fildred13)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/how-to-overwrite-default-function-from-child-theme/)
 * On the twentyfifteen theme, the category pages show the title as “Category: *
   archive title*”. I am trying to change that functionality so that it instead 
   simply prints the category title without prepending “Category:”.
 * I have assumed, and correct me if I’m wrong, that the best way to do this is 
   to override the default word press function get_archive_title() located in general-
   template.php. To do that, I have added the followig to my child theme’s functions.
   php:
 *     ```
       function get_the_archive_title() {
           if ( is_category() ) {
               $title = sprintf( __( '%s' ), single_cat_title( '', false ) );
           } elseif ( is_tag() ) {
               $title = sprintf( __( 'Tag: %s' ), single_tag_title( '', false ) );
           } elseif ( is_author() ) {
               $title = sprintf( __( 'Author: %s' ), '<span class="vcard">' . get_the_author() . '</span>' );
           } elseif ( is_year() ) {
               $title = sprintf( __( 'Year: %s' ), get_the_date( _x( 'Y', 'yearly archives date format' ) ) );
           } elseif ( is_month() ) {
               $title = sprintf( __( 'Month: %s' ), get_the_date( _x( 'F Y', 'monthly archives date format' ) ) );
           } elseif ( is_day() ) {
               $title = sprintf( __( 'Day: %s' ), get_the_date( _x( 'F j, Y', 'daily archives date format' ) ) );
           } elseif ( is_tax( 'post_format' ) ) {
               if ( is_tax( 'post_format', 'post-format-aside' ) ) {
                   $title = _x( 'Asides', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
                   $title = _x( 'Galleries', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-image' ) ) {
                   $title = _x( 'Images', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-video' ) ) {
                   $title = _x( 'Videos', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-quote' ) ) {
                   $title = _x( 'Quotes', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-link' ) ) {
                   $title = _x( 'Links', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-status' ) ) {
                   $title = _x( 'Statuses', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-audio' ) ) {
                   $title = _x( 'Audio', 'post format archive title' );
               } elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
                   $title = _x( 'Chats', 'post format archive title' );
               }
           } elseif ( is_post_type_archive() ) {
               $title = sprintf( __( 'Archives: %s' ), post_type_archive_title( '', false ) );
           } elseif ( is_tax() ) {
               $tax = get_taxonomy( get_queried_object()->taxonomy );
               /* translators: 1: Taxonomy singular name, 2: Current taxonomy term */
               $title = sprintf( __( '%1$s: %2$s' ), $tax->labels->singular_name, single_term_title( '', false ) );
           } else {
               $title = __( 'Archives' );
           }
   
           /**
            * Filter the archive title.
            *
            * @since 4.1.0
            *
            * @param string $title Archive title to be displayed.
            */
           return apply_filters( 'get_the_archive_title', $title );
       }
       ```
   
 * I have made my simple change to the category display, but of course when I attempt
   to visit the site I get the following cannot redeclare error:
 * Fatal error: Cannot redeclare get_the_archive_title() (previously declared in/
   home/content/59/10247459/html/themadmodder/wp-includes/general-template.php:1142)
   in /home/content/59/10247459/html/themadmodder/wp-content/themes/themadmodder/
   functions.php on line 65
 * So my question is: How do I go about overriding the default get_the_archive_title()?
 * Or, if I’m not using best practices here, how am I supposed to change this functionality?

Viewing 1 replies (of 1 total)

 *  [csloisel](https://wordpress.org/support/users/csloisel/)
 * (@csloisel)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/how-to-overwrite-default-function-from-child-theme/#post-5708728)
 * You see that line at the bottom: `apply_filters( 'get_the_archive_title', $title);`?
 * Using that hook is the best way to override the functionality. See: [http://codex.wordpress.org/Plugin_API/Hooks](http://codex.wordpress.org/Plugin_API/Hooks)

Viewing 1 replies (of 1 total)

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## Tags

 * [child theme](https://wordpress.org/support/topic-tag/child-theme/)
 * [functions](https://wordpress.org/support/topic-tag/functions/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [csloisel](https://wordpress.org/support/users/csloisel/)
 * Last activity: [11 years, 4 months ago](https://wordpress.org/support/topic/how-to-overwrite-default-function-from-child-theme/#post-5708728)
 * Status: not resolved

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