apply_filters( ‘gettext’, string $translation, string $text, string $domain )

User Contributed Notes

1. Skip to note 8 content

   rochow 4 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 10You must log in to vote on the helpfulness of this note

   This filter is ideally avoided as the performance aspect can be huge. If you do need it, be aware with a common suite of plugins installed this can easily run thousands of times on one page! WooCommerce and similar make everything translatable.

   It’s far improved to check the domain right away and return the translation instantly if it’s not the domain you’re wanting to translate. This minimises the overhead, rather than some of these examples that are running str_replace(), is_single() etc over and over unnecessarily which adds up due to the sheer quantity of times this code will run.

   add_filter( 'gettext', 'wpdocs_translate_text', 10, 3 );
   function wpdocs_translate_text( $translated_text, $untranslated_text, $domain ) {
   	if ( 'blah' !== $domain ) {
   		return $translated_text;
   	}
   
   	// Now do your checking for your string within the 'blah' domain
   }
2. Skip to note 9 content

   Abdul Wahab 6 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 2You must log in to vote on the helpfulness of this note

   Change the “Register” text on the WordPress default login page.

   add_action( 'login_head', 'default_login_page_head' );
   
   /**
    * Customise the login form using login_head.
    */
   function default_login_page_head() {
   	add_filter( 'gettext', 'change_login_form_register_keyword');
   }
   /**
     * Change Register text from the bottom of login form.
     *
     * @param $text string 
     * @return $text string
     * * * * * * * * * * * * * * * * * * */
   function change_login_form_register_keyword( $text ) {
   
   	$text = str_ireplace( 'Register',  'Sign Up',  $text );
       return $text;
   }
3. Skip to note 10 content

   leogermani 6 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

   Change the Comment Form

   Change the default field names of the comment form. Assumes the current form includes field names “Name” and “Email” and that ‘theme_text_domain’ is the name of your theme’s text domain.

   add_filter( 'gettext', 'theme_change_comment_field_names', 20, 3 );
   /**
    * Change comment form default field names.
    *
    * @link https://codex.wordpress.org/Plugin_API/Filter_Reference/gettext
    */
   function theme_change_comment_field_names( $translated_text, $text, $domain ) {
   
       if ( is_singular() ) {
   
           switch ( $translated_text ) {
   
               case 'Name' :
   
                   $translated_text = __( 'First Name', 'theme_text_domain' );
                   break;
   
               case 'Email' :
   
                   $translated_text = __( 'Email Address', 'theme_text_domain' );
                   break;
           }
   
       }
   
       return $translated_text;
   }
4. Skip to note 11 content

   leogermani 6 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

   Remove Text from Admin Form

   add_filter('gettext', 'remove_admin_stuff', 20, 3);
   /**
    * Remove the text at the bottom of the Custom fields box in WordPress Post/Page Editor.
    *
    * @link https://codex.wordpress.org/Plugin_API/Filter_Reference/gettext
    */
   function remove_admin_stuff( $translated_text, $untranslated_text, $domain ) {
   
       $custom_field_text = 'Custom fields can be used to add extra metadata to a post that you can <a href="https://codex.wordpress.org/Using_Custom_Fields&quot; target="_blank">use in your theme</a>.';
   
       if ( is_admin() && $untranslated_text === $custom_field_text ) {
           return '';
       }
   
       return $translated_text;
   }
5. Skip to note 12 content

   Muhammad Arslan 4 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

   add_filter( 'gettext', 'wpdocs_change_login_form_register_keyword' );
   
   /**
     * Change Register link text on the login form
     *
     * @param $text string 
     * @return $text string
     * * * * * * * * * * * * * * * * * * */
   function wpdocs_change_login_form_register_keyword( $text ) {
    
       $text = str_ireplace( 'Register', 'Sign Up Now', $text );
   
       return $text;
   }
6. Skip to note 13 content

   leogermani 6 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: -1You must log in to vote on the helpfulness of this note

   Change Text in Custom Post Admin Form

   add_filter('gettext', 'change_admin_cpt_text_filter', 20, 3);
   /*
    * Change the text in the admin for my custom post type
    * 
   **/
   function change_admin_cpt_text_filter( $translated_text, $untranslated_text, $domain ) {
   
     global $typenow;
   
     if( is_admin() && 'MY_CPT' == $typenow )  {
   
       //make the changes to the text
       switch( $untranslated_text ) {
   
           case 'Featured Image':
             $translated_text = __( 'NEW FEATURED IMAGE TEXT','text_domain' );
           break;
   
           case 'Enter title here':
             $translated_text = __( 'NEW TITLE COPY','text_domain' );
           break;
           
           //add more items
        }
      }
      return $translated_text;
   }
7. Skip to note 14 content

   Muhammad Arslan 4 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: -1You must log in to vote on the helpfulness of this note

   add_filter( 'gettext', 'wpdocs_change_login_form_register_keyword' );
   /**
     * Change Register success after text message.
     *
     * @param $text string 
   
     * @return $text string
     * * * * * * * * * * * * * * * * * * */
   function wpdocs_change_login_form_register_keyword( $text ) {
   
       $text = str_ireplace( 'Registration complete. Please check your email, then visit the', ' Custom Message',  $text );
   
       return $text;
   }