دوستان این ارور وقتی دارم وارد مدیریت وردپرس میشم میاد Warning: Cannot modify header information - headers already sent by (output started at /home/prsakhab/public_html/wp-content/themes/my theme/functions.php:3) in /home/prsakhab/public_html/wp-includes/pluggable.php on line 881 اینم فایل functions <?php if (function_exists('register_sidebar')) { register_sidebar(array( 'before_widget' => '<ul id="%1$s" class="widget %2$s">', 'after_widget' => '</ul>', 'before_title' => '<h3><span>', 'after_title' => '</span></h3>', )); register_sidebar(
