page_attributes_meta_box()

function page_attributes_meta_box( $post ) { 
	if ( is_post_type_hierarchical( $post->post_type ) ) : 
		$dropdown_args = array( 
		
	'post_type'        => $post->post_type, 
		
	'exclude_tree'     => $post->ID, 
		
	'selected'         => $post->post_parent, 
		
	'name'             => 'parent_id', 
		
	'show_option_none' => __( '(no parent)' ), 
		
	'sort_column'      => 'menu_order, post_title', 
		
	'echo'             => 0, 
		);  
		/** 
		 * Filters the arguments used to generate a Pages drop-down element. 
		 * 
		 * @since 3.3.0 
		 * 
		 * @see wp_dropdown_pages() 
		 * 
		 * @param array   $dropdown_args Array of arguments used to generate the pages drop-down. 
		 * @param WP_Post $post          The current post. 
		 */ 
		$dropdown_args = apply_filters( 'page_attributes_dropdown_pages_args', $dropdown_args, $post ); 
		$pages         = wp_dropdown_pages( $dropdown_args ); 
		if ( ! empty( $pages ) ) : 
		
	?> <p class="post-attributes-label-wrapper parent-id-label-wrapper"><label class="post-attributes-label" for="parent_id"><?php _e( 'Parent' ); ?></label></p> 
		
	<?php echo $pages; ?> 
		
	<?php 
		endif; // End empty pages check. 
	endif;  // End hierarchical check.  
	if ( count( get_page_templates( $post ) ) > 0 && get_option( 'page_for_posts' ) != $post->ID ) : 
		$template = ! empty( $post->page_template ) ? $post->page_template : false; 
		?> <p class="post-attributes-label-wrapper page-template-label-wrapper"><label class="post-attributes-label" for="page_template"><?php _e( 'Template' ); ?></label> 
		<?php 
		/** 
		 * Fires immediately after the label inside the 'Template' section 
		 * of the 'Page Attributes' meta box. 
		 * 
		 * @since 4.4.0 
		 * 
		 * @param string|false $template The template used for the current post. 
		 * @param WP_Post      $post     The current post. 
		 */ 
		do_action( 'page_attributes_meta_box_template', $template, $post ); 
		?> </p> <select name="page_template" id="page_template"> 
		<?php 
		/** 
		 * Filters the title of the default page template displayed in the drop-down. 
		 * 
		 * @since 4.1.0 
		 * 
		 * @param string $label   The display value for the default page template title. 
		 * @param string $context Where the option label is displayed. Possible values 
		 *                        include 'meta-box' or 'quick-edit'. 
		 */ 
		$default_title = apply_filters( 'default_page_template_title', __( 'Default template' ), 'meta-box' ); 
		?> <option value="default"><?php echo esc_html( $default_title ); ?></option> 
		<?php page_template_dropdown( $template, $post->post_type ); ?> </select> <?php endif; ?> 
	<?php if ( post_type_supports( $post->post_type, 'page-attributes' ) ) : ?> <p class="post-attributes-label-wrapper menu-order-label-wrapper"><label class="post-attributes-label" for="menu_order"><?php _e( 'Order' ); ?></label></p> <input name="menu_order" type="text" size="4" id="menu_order" value="<?php echo esc_attr( $post->menu_order ); ?>" /> 
		<?php 
		/** 
		 * Fires before the help hint text in the 'Page Attributes' meta box. 
		 * 
		 * @since 4.9.0 
		 * 
		 * @param WP_Post $post The current post. 
		 */ 
		do_action( 'page_attributes_misc_attributes', $post ); 
		?> 
		<?php if ( 'page' === $post->post_type && get_current_screen()->get_help_tabs() ) : ?> <p class="post-attributes-help-text"><?php _e( 'Need help? Use the Help tab above the screen title.' ); ?></p> 
		
	<?php 
	endif; 
	endif;
}