WordPress Meta Box - second field not saving - php

Question

So I've been playing around with some custom metaboxes and following tutorials etc - I've got to the point where the top metabox field is saving correctly but the second one (width) doesn't save - is there anything obvious I'm doing wrong here? I've tried separating the second field's save in to a separate function to test but that also did not work.
add_action( 'add_meta_boxes', 'youtube_metaboxes' );
function youtube_metaboxes() {
add_meta_box('wpt_youtube', 'youtube URL', 'wpt_youtube', 'product', 'side', 'default');
}
function wpt_youtube() {
global $post;
echo '<input type="hidden" name="youtubemeta_noncename" id="youtubemeta_noncename" value="' .
wp_create_nonce( plugin_basename(__FILE__) ) . '" />';
$addyoutube = get_post_meta($post->ID, '_youtube', true);
echo '<input type="text" name="_youtube" value="' . $addyoutube . '" class="widefat" />';
$youtubeWidth = get_post_meta($post->ID, '_width', true);
echo 'Width: <br /><input type="text" name="_width" value="' . $youtubeWidth . '" class="widefat" />';
}
// Save the Metabox Data
function wpt_save_youtube_meta($post_id, $post) {
if ( !wp_verify_nonce( $_POST['youtubemeta_noncename'], plugin_basename(__FILE__) )) {
return $post->ID;
}
if ( !current_user_can( 'edit_post', $post->ID ))
return $post->ID;
$addyoutube_meta['_youtube'] = $_POST['_youtube'];
foreach ($addyoutube_meta as $key => $value) {
if( $post->post_type == 'revision' ) return;
$value = implode(',', (array)$value); // If $value is an array, make it a CSV (unlikely)
if(get_post_meta($post->ID, $key, FALSE)) {
update_post_meta($post->ID, $key, $value);
} else {
add_post_meta($post->ID, $key, $value);
}
if(!$value) delete_post_meta($post->ID, $key);
}
$addWidth_meta['_width'] = $_POST['_width'];
foreach ($addWidth_meta as $key => $value) {
if( $post->post_type == 'revision' ) return;
$value = implode(',', (array)$value); // If $value is an array, make it a CSV (unlikely)
if(get_post_meta($post->ID, $key, FALSE)) {
update_post_meta($post->ID, $key, $value);
} else {
add_post_meta($post->ID, $key, $value);
}
if(!$value) delete_post_meta($post->ID, $key);
}
}
add_action('save_post', 'wpt_save_youtube_meta', 1, 2); // save the custom fields

Answer 1

I had a look through this article:
http://wp.tutsplus.com/tutorials/reusable-custom-meta-boxes-part-1-intro-and-basic-fields/
Seems like a much better way of creating custom meta boxes.