Header and blog style

<?php 
function themeName_get_the_id(){
  if(is_woocommerce()){
   $id = get_option( 'woocommerce_shop_page_id' ); 
  } elseif(is_home() && !is_front_page()){
   $id = get_option( 'page_for_posts' );
  } else {
   $id = get_the_id();
  }
  
  return $id;
 }
//another page another header style
 function ThemeName_get_the_id(){
  if(is_woocommerce()){
   $id = get_option( 'woocommerce_shop_page_id' ); 
  } elseif(is_home() && !is_front_page()){
   $id = get_option( 'page_for_posts' );
  } else {
   $id = get_the_id();
  }
  
  return $id;
 }
 
$menu_style_meatbox = get_post_meta(ThemeName_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 ( $themename_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;
		}

	}