WordPress Schools

Way 1: ------------------------------------ <?php $cats=get_the_category();     foreach($cats as $cat){         if($cat->category_parent == 0 && $cat->term_id != 1){             echo '<h2 class="link"><a href="'.get_category_link($cat->term_id ).'">Return</a></h2>';         }         break;     } ?> Way 2: ------------------------------------ <a href="<?php $cat = get_the_category(); $cat = $cat[0]; echo get_category_link($cat->cat_ID); ?>">Return</a>

remove_filter('authenticate', 'wp_authenticate_username_password', 20); add_filter('authenticate', function($user, $email, $password){         if(empty($email) || empty ($password)){                   $error = new WP_Error();             if(empty($email)){ //No email                 $error->add('empty_username', __('<strong>ERROR</strong>: Email field is empty.'));             }             else if(!filter_var($email, FILTER_VALIDATE_EMAIL)){ //Invalid Email                 $error->add('invalid_username', __('<strong>ERROR</strong>: Email is invalid.'));             }             if(empty($password)){ //No password            ...

add_action('register_post', 'binda_register_fail_redirect', 99, 3); function binda_register_fail_redirect( $sanitized_user_login, $user_email, $errors ){     $errors = apply_filters( 'registration_errors', $errors, $sanitized_user_login, $user_email );     if ( $errors->get_error_code() ){         $redirect_url = get_bloginfo('url') . '/registration-fails';         foreach ( $errors->errors as $e => $m ){             $redirect_url = add_query_arg( $e, '1', $redirect_url );         }         wp_redirect( $redirect_url );         exit;       } }

<?php if ( has_post_thumbnail() ) { the_post_thumbnail(); } else { ?> <img src="<?php bloginfo('template_directory'); ?>/images/default-image.jpg" alt="<?php the_title(); ?>" /> <?php } ?>

Add following snippet to your current theme’s  functions.php  file: function orkbet_editor_menu() { global $menu; $user = wp_get_current_user(); if ($user->ID!=1) { remove_action('admin_menu', '_add_themes_utility_last', 101); } } add_action('admin_menu', 'orkbet_editor_menu', 1);

Add following snippet to your current theme’s  functions.php  file: if ( current_user_can('contributor') && !current_user_can('upload_files') ) add_action('admin_init', 'allow_contributor_uploads'); function allow_contributor_uploads() {      $contributor = get_role('contributor');      $contributor->add_cap('upload_files'); }