可以将布局名称作为GET 参数，然后在此基础上更改设计。因此，您的URL应该如下所示：

http://domain.com/post-name?layout=layout-1

<?php 
// If the header is different two, you should call for different headers too, 
// Check this for showing different headers
// https://developer.wordpress.org/reference/functions/get_header/
if( isset( $_GET[\'layout\'] )  && $_GET[\'layout\'] == \'layout-1\' ) {
    // Show the design for for the first layout 
}
else if ( ... ) {
    // Show the design for other layouts 
}