How to Create Custom type and custom meta box

WordPress can hold and display many different types of content. Internally, these are all stored in the same place, in the wp_posts table. These are differentiated by a column called post_type

Custom Types

A Custom Type is a Post Type you define. Adding a custom type to WordPress is done via the register_post_type function. This function allows you to define the post type and how it operates within WordPress. Here's a basic example of adding a custom post type name as Care Agency:

//Add New Custom Type
add_action('init','care_agency');
//Register custom post type
function care_agency()
{
$arg=array('labels'=>array(
'name'=>'Care Agencies', //Define Title of custom type
'singular_name'=>'Care Agency'),////Define Singular Title of custom type
'public'=>true, ////Define custom type access label
'capability_type'=>'page',
'menu_position'=>2,////Define Position of  custom type
'support'=>array('editor',
'thumbnail',
'page-attributes'
)
);
register_post_type('care_agency',$arg);
}

How Add New Custom Meta box and custom fields

For Add new Meta box name as SEO Information
add_action( 'add_meta_boxes', 'add_seo_meta_box' );
/**
* Adds the SEO meta box to the page screen
*/
function add_seo_meta_box()
{
global $meta_box;
add_meta_box($meta_box['id'], $meta_box['title'], 'meta_show_box', $meta_box['page'], $meta_box['context'], $meta_box['priority']);
}
//Define SEO Meta box Fields
$prefix = 'seo_';
$meta_box = array(
'id' => 'my-meta-box',
'title' => 'SEO Information',
'page' => '',
'context' => 'normal',
'priority' => 'high',
'fields' => array(
array(
'name' => 'Meta Title',
'desc' => 'enter meta title',
'id' => $prefix . 'title',
'type' => 'text',
'std' => ''
),
array(
'name' => 'Meta Keyword',
'desc' => 'enter meta keywords',
'id' => $prefix . 'keywords',
'type' => 'text',
'std' => ''
),
array(
'name' => 'Meta Description',
'id' => $prefix . 'description',
'desc' => 'enter meta description',
'type' => 'textarea',
'std' => ''
)
)
);
//Display SEO Meta Box
function meta_show_box()
{
global $meta_box, $post;
// Use nonce for verification
echo '<input type="hidden" name="mytheme_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';
echo '';
foreach ($meta_box['fields'] as $field) {
// get current post meta data
$meta = get_post_meta($post->ID, $field['id'], true);
echo '<p>',
'<label for="', $field['id'], '">', $field['name'], '</label>','';
switch ($field['type']) {
case 'text':
echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />', '<br />', $field['desc'];
break;
case 'textarea':
echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="4" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>', '<br />', $field['desc'];
break;
'</p>';
}
}
}
//Save SEO Meta Box fields Value
add_action( 'save_post', 'save_seo_meta_box' );
function save_seo_meta_box($post_id) {
global $meta_box;
// verify nonce
if (!wp_verify_nonce($_POST['mytheme_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'] || 'care_agency' == $_POST['post_type'] || 'post' == $_POST['post_type']) {
if (!current_user_can('edit_page', $post_id)) {
return $post_id;
}
} elseif (!current_user_can('edit_post', $post_id)) {
return $post_id;
}
foreach ($meta_box['fields'] as $field) {
$old = get_post_meta($post_id, $field['id'], true);
$new = $_POST[$field['id']];
if ($new && $new != $old) {
update_post_meta($post_id, $field['id'], $new);
} elseif ('' == $new && $old) {
delete_post_meta($post_id, $field['id'], $old);
}
}
}

 

How dispaly SEO Meta box details in header of the Site

//Add Seo Details in header
add_action('wp_head','add_metavalue_header',5);
function add_metavalue_header()
{
global $meta_box, $post;
echo "<meta name='title' value='".get_post_meta($post->ID,'seo_title',true)."'>";
echo "<meta name='keywords' value='".get_post_meta($post->ID,'seo_keywords',true)."'>";
echo "<meta name='description' value='".get_post_meta($post->ID,'seo_description',true)."'>";
}