http://wordpress.stackexchange.com/questions/84003/create-functions-based-on-array-values/84004#84004

cpt-archive.php

<?php

// Start up the engine
class CPT_Archive_Content
{

  /**
	 * Static property to hold our singleton instance
	 * @var CPT_Archive_Content
	 *
	 * @since 1.0
	 */
	static $instance = false;

	/**
	 * This is our constructor, which is private to force the use of
	 * getInstance() to make this a Singleton
	 *
	 * @return CPT_Archive_Content
	 *
	 * @since 1.0
	 */

	public function __construct() {
		add_action					( 'admin_menu', 					array( $this, 'menu_create'		)			);

	}

	/**
	 * If an instance exists, this returns it.  If not, it creates one and
	 * retuns it.
	 *
	 * @return CPT_Archive_Content
	 */

	public static function getInstance() {
		if ( !self::$instance )
			self::$instance = new self;
		return self::$instance;
	}

	/**
	 * Post type helper
	 *
	 * @return CPT_Archive_Content
	 */

	private function post_types() {

		// grab post types
		$args	= array(
			'public'	=> true,
			'_builtin'	=> false
		);
		$output = 'objects';
		$types	= get_post_types($args, $output);

		return $types;
	}

	/**
	 * call loop of types and add page
	 *
	 * @return CPT_Archive_Content
	 */

	public function menu_create() {

		// get post type array
		$types = $this->post_types();

		foreach ($types as $type ):
			// variables
			$slug	= $type->name;
			$name	= $type->label;
			// page call
			add_submenu_page('edit.php?post_type='.$slug.'', __( $name .' Archives', 'cptarch' ), __( $name .' Archives', 'cptarch' ), 'edit_posts', $slug.'-archive', array( $this, 'layout_setup' ));

		endforeach;

	}

	public function layout_setup() {
		$screen = get_current_screen();
		
		// get post type array
		$types = $this->post_types();
		
		// do foreach on $types, check if current post-type (with "-archive' appended) equals to $screen->id
		// if that matches, do as you wish

	}


/// end class
}


// Instantiate our class
$CPT_Archive_Content = new CPT_Archive_Content();