Meta Box Creation

// META BOX CODE

$my_info_metabox = array(
	'id' => 'my-info',
	'title' => 'My Info',
	'page' => array('my_info'),
	'context' => 'normal',
	'priority' => 'default',
	'fields' => array(
		array(
			'name' 			=> 'Box 1',
			'desc' 			=> '',
			'id' 			=> 'myinfo-box1',
			'class' 		=> 'myinfo-box1',
			'type' 			=> 'textarea',
			'rich_editor' 	=> 1,
			'max' 			=> 0
		),
		array(
			'name' 			=> 'Box 2',
			'desc' 			=> '',
			'id' 			=> 'myinfo-box2',
			'class' 		=> 'myinfo-box2',
			'type' 			=> 'textarea',
			'rich_editor' 	=> 1,
			'max' 			=> 0
		),
		array(
			'name' 			=> 'Box 3',
			'desc' 			=> '',
			'id' 			=> 'myinfo-box3',
			'class' 		=> 'myinfo-box3',
			'type' 			=> 'textarea',
			'rich_editor' 	=> 1,
			'max' 			=> 0
		),
	)
);

add_action('admin_init', 'add_my_info_meta_box');

function add_my_info_meta_box() {

	global $my_info_metabox;

	foreach($my_info_metabox['page'] as $page) {
		add_meta_box($my_info_metabox['id'], $my_info_metabox['title'], 'show_my_info_box', $page, 'normal', 'default', $my_info_metabox);
	}
}

// function to show meta boxes
function show_my_info_box()	{
	global $post;
	global $my_info_metabox;
	global $wp_version;

	// Use nonce for verification
	echo '<input type="hidden" name="my_info_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';

	echo '<table class="form-table">';

	foreach ($my_info_metabox['fields'] as $field) {
		// get current post meta data

		$meta = get_post_meta($post->ID, $field['id'], true);

		echo '<tr>',
				'<th style="width:20%"><label for="', $field['id'], '">', stripslashes($field['name']), '</label></th>',
				'<td class="myinfo_field_type_' . str_replace(' ', '_', $field['type']) . '">';
		switch ($field['type']) {
			case 'textarea':

				if($field['rich_editor'] == 1) {
					if($wp_version >= 3.3) {
						echo wp_editor($meta, $field['id'], array('textarea_name' => $field['id']));
					} else {
						// older versions of WP
						$editor = '';
						if(!post_type_supports($post->post_type, 'editor')) {
							$editor = wp_tiny_mce(true, array('editor_selector' => $field['class'], 'remove_linebreaks' => false) );
						}
						$field_html = '<div style="width: 97%; border: 1px solid #DFDFDF;"><textarea name="' . $field['id'] . '" class="' . $field['class'] . '" id="' . $field['id'] . '" cols="60" rows="8" style="width:100%">'. $meta . '</textarea></div><br/>' . __(stripslashes($field['desc']));
						echo $editor . $field_html;
					}
				} else {
					echo '<div style="width: 100%;"><textarea name="', $field['id'], '" class="', $field['class'], '" id="', $field['id'], '" cols="60" rows="8" style="width:97%">', $meta ? $meta : $field['std'], '</textarea></div>', '', stripslashes($field['desc']);
				}

				break;

		}
		echo     '<td>',
			'</tr>';
	}

	echo '</table>';
}

// Save data from meta box
add_action('save_post', 'my_info_metabox_save');
function my_info_metabox_save($post_id) {
	global $post;
	global $my_info_metabox;

	// verify nonce
	if ( ! isset( $_POST['my_info_meta_box_nonce'] ) || ! wp_verify_nonce($_POST['my_info_meta_box_nonce'], basename(__FILE__))) {
		return $post_id;
	}

	// check autosave
	if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
		return $post_id;
	}

	// check permissions
	if ('page' == $_POST['post_type']) {
		if (!current_user_can('edit_page', $post_id)) {
			return $post_id;
		}
	} elseif (!current_user_can('edit_post', $post_id)) {
		return $post_id;
	}

	foreach ($my_info_metabox['fields'] as $field) {

		$old = get_post_meta($post_id, $field['id'], true);
		$new = $_POST[$field['id']];

		if ($new && $new != $old) {
			if($field['type'] == 'date') {
				$new = ssv_locations_format_date($new);
				update_post_meta($post_id, $field['id'], $new);
			} else {
				if(is_string($new)) {
					$new = $new;
				}
				update_post_meta($post_id, $field['id'], $new);


			}
		} elseif ('' == $new && $old) {
			delete_post_meta($post_id, $field['id'], $old);
		}
	}
}


// converts a time stamp to date string for meta fields
if(!function_exists('my_info_timestamp_to_date')) {
	function my_info_timestamp_to_date($date) {

		return date('m/d/Y', $date);
	}
}
// was ecpt_format_date
if(!function_exists('my_info_format_date')) {
	function my_info_format_date($date) {

		$date = strtotime($date);

		return $date;
	}
}