gistfile1.php

function my_post_types() {
  // Set labels
	$labels = array(
		'name' => 'Questions',
		'singular_name' => 'Question',
		'add_new' => 'Add New Question',
		'add_new_item' => 'Add New Question',
		'edit_item' => 'Edit Question',
		'new_item' => 'New Question',
		'all_items' => 'All Questions',
		'view_item' => 'View Question',
		'search_items' => 'Search Questions',
		'not_found' => 'No questions found',
		'not_found_in_trash' => 'No questions found in Trash',
		'parent_item_colon' => '',
		'menu_name' => 'Questions'
	);
	// Set arguments
	$args = array(
		'labels' => $labels,
		'public' => true,
		'publicly_queryable' => true,
		'show_ui' => true,
		'show_in_menu' => true,
		'query_var' => true,
		'rewrite' => array( 'slug' => 'question' ),
		'capability_type' => 'post',
		'has_archive' => true,
		'hierarchical' => false,
		'menu_position' => null
	);
	register_post_type( 'my_post_types', $args );
}
// Always add to init
add_action( 'init', 'my_post_types' );