The WordPress Studio Framework (WPSF) can also be used to create custom metaboxes that can be assigned to different post types.

Metabox Options Framework Arguments

Name	Type	Default	Description
title	string		Title of the metabox
post_type	array|string	post	Provide any number of post_types for a given metabox to appear.
data_type	string	serialize	Database save option type (serialize | unserialize)
context	string	advanced	The context within the screen where the boxes should display. (normal | side | advanced)
priority	string	default	The priority within the context where the boxes should show. (high | low | default)
exclude_post_types	array		Array of post_types to exclude
page_templates	array|string		Bind visibility of a metabox to any number of page templates
post_formats	array|string		Bind the visibility of a metabox to a given post format
show_restore	bool	false	Flag to display restore button of the metabox
enqueue_webfont	bool	true	Flag to load web fonts of the framework
async_webfont	bool	false	Flag to load google fonts with async method of the metabox
output_css	bool	true	Flag to load output css of the framework
theme	string	dark	The theme of the framework (dark | light)
class	string		Extra CSS classes (space separated to append to the metabox
defaults	array		Sets all default values from an external array (optional)

Simple Metabox Options Example

// Check to see if WordPress Studio Framework is loaded
if ( class_exists( 'WPSF' ) ){
  $prefix = 'custom_post_options';
  
  // Create a metabox
  WPSF::createMetabox( $prefix, array(
    'title' => 'Custom Post Options',
    'post_type' => 'post',
  ));

  // Create a section
  WPSF::createSection( $prefix, array(
    'title' => 'Tab Title One',
    'fields' => array(
      array(
        'id' => 'example-text',
        'type' => 'text',
        'title' => 'Example Text',
      ),
    )
  ));

  WPSF::createSection( $prefix, array(
    'title' => 'Tab Title Two',
    'fields' => array(
      array(
        'id' => 'example-textarea',
        'type' => 'textarea',
        'title' => 'Example Textarea',
      ),
    )
  ));
}

Metabox Option Framework with Side Location

if ( class_exists( 'WPSF' ) ){
  $prefix = 'metabox_options';
  WPSF::createMetabox( $prefix, array(
    'title' => 'My Custom Metabox',
    'post_type' => 'post',
    'context' => 'side',
  ));
  WPSF::createSection( $prefix, array(
    'title' => 'Tab Title One',
    'fields' => array(
      array(
        'id' => 'example-text',
        'type' => 'text',
        'title' => 'Example Text',
      ),
    )
  ));
  WPSF::createSection( $prefix, array(
    'title' => 'Tab Title Two',
    'fields' => array(
      array(
        'id' => 'example-textarea',
        'type' => 'textarea',
        'title' => 'Example Textarea',
      ),
    )
  ));
}

Metabox Options Framework with all Arguments

if ( class_exists( 'WPSF' )){
  $prefix = 'metabox_options';
  WPSF::createMetabox( $prefix, array(
    'title' => '',
    'post_type' => 'post',
    'data_type' => 'serialize',
    'context' => 'advanced',
    'priority' => 'default',
    'exclude_post_types' => array(),
    'page_templates' => '',
    'post_formats' => '',
    'show_restore' => false,
    'enqueue_webfont' => true,
    'async_webfont' => false,
    'output_css' => true,
    'theme' => 'dark',
    'class' => '',
  ));
  WPSF::createSection( $prefix, array(
    'title' => 'Tab Title One',
    'fields' => array(
      array(
        'id' => 'example-text',
        'type' => 'text',
        'title' => 'Example Text',
      ),
    )
  ));
}

Extraction of Values from Metabox

// data_type => serialize is default
// The 'custom_post_options' is the unique ID of the metabox (prefix)
$meta = get_post_meta( get_the_ID(), 'custom_post_options', true );

echo $meta['example-text'];
echo $meta['example-textarea'];

Extraction of Values from Metabox – Advanced

// data_type => unserialize is optional
// you should use the option id to directly declare the field config

echo get_post_meta( get_the_ID(), 'example-text', true );
echo get_post_meta( get_the_ID(), 'example-textarea', true );