Header and blog style

<?php 
//another page another header style
$menu_style_meatbox = get_post_meta(get_the_id(),'_ThemeName_page_menu_style',true);
    $menu_style_theme_option = $ThemeName_opt ['ThemeName_header_layout'];
    if( $menu_style_meatbox!='none'){
     $menu_style_theme_option = $menu_style_meatbox;
    }
    
    switch( $menu_style_theme_option ){
     case 2:
     get_template_part('/inc/header/header-2');
     break;
     case 3:
     get_template_part('/inc/header/header-3');
     break;
     case 4:
     get_template_part('/inc/header/header-4');
     break;
     
     default:
     get_template_part('/inc/header/header-1');
    }
    
    //blog style
    if( isset ( $ately_opt['themename_sidebarblog_pos'] ) ){
	$themename_blog_layout_opts = $themename_opt['themename_sidebarblog_pos'];
}

	if(isset($_GET['layout'])){

		switch (htmlspecialchars($_GET['layout'])) {

			case 'twocolumn':
				$themename_blog_layout_opts = 'twocolumn';
				break;

			case 'threecolumn':
				$themename_blog_layout_opts = 'threecolumn';
				break;

			case 'left_sidebar':
				$themename_blog_layout_opts = 'left';
				break;
			
			case 'right_sidebar':
				$themename_blog_layout_opts = 'right';
				break;
			
			default:
				$themename_blog_layout_opts = 'single';
				break;
		}

	}