使用代碼翻譯特定單字

//翻譯特定單字
function translate_text( $translated ) {

  $translated = str_ireplace( 'PRODUCT',  '產品',  $translated );
  $translated = str_ireplace( 'SUBTOTAL',  '小計',  $translated ); 

  return $translated;

}
add_filter( 'gettext',  'translate_text' );
add_filter( 'ngettext',  'translate_text' );