carlodaniele

<?php
// verify meta box nonce
if ( !isset( $_POST['food_meta_box_nonce'] ) || !wp_verify_nonce( $_POST['food_meta_box_nonce'], basename( __FILE__ ) ) ){
	return;
}

carlodaniele

<?php
// return if autosave
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ){
	return;
}

carlodaniele

<?php
// Check the user's permissions.
if ( ! current_user_can( 'edit_post', $post_id ) ){
	return;
}

carlodaniele

<?php
// store custom fields values
// cholesterol string
if ( isset( $_REQUEST['cholesterol'] ) ) {
	update_post_meta( $post_id, '_food_cholesterol', sanitize_text_field( $_POST['cholesterol'] ) );
}

// store custom fields values
// carbohydrates string
if ( isset( $_REQUEST['carbohydrates'] ) ) {

carlodaniele

<?php
// an array of values
$vitamins = array( 'Vitamin A', 'Thiamin (B1)', 'Riboflavin (B2)', 'Niacin (B3)', 'Pantothenic Acid (B5)', 'Vitamin B6', 'Vitamin B12', 'Vitamin C', 'Vitamin D', 'Vitamin E', 'Vitamin K' );

// stores _food_vitamins array 
$current_vitamins = ( get_post_meta( $post->ID, '_food_vitamins', true ) ) ? get_post_meta( $post->ID, '_food_vitamins', true ) : array();
?>
<div class='inside'>
	<h3><?php _e( 'Vitamins', 'food_example_plugin' ); ?></h3>
	<p>

carlodaniele

<?php add_filter( 'show_admin_bar', '__return_false' ); ?>

carlodaniele

<?php
function myplugin_customize_toolbar( $wp_admin_bar ){
	// your code here
}
add_action( 'admin_bar_menu', 'myplugin_customize_toolbar', 999 );

carlodaniele

<li id="wp-admin-bar-user-url">
	<a class="ab-item" href="http://example.com">
		<span class="user-url">My Website</span>
	</a>
</li>

carlodaniele

<?php
/**
 * Customize WordPress Toolbar
 *
 * @param obj $wp_admin_bar An instance of the global object WP_Admin_Bar
 */
function myplugin_customize_toolbar( $wp_admin_bar ){
	$user = wp_get_current_user();

	if ( ! ( $user instanceof WP_User ) ){

carlodaniele

<?php
/**
 * Remove WordPress Toolbar for all users except admins and editors
 *
 */
function mytheme_remove_admin_bar() {
	if ( ! current_user_can( 'publish_posts' ) ) {
		show_admin_bar( false );
	}
}