扩展类php的同名

I am trying to create a php class that will take in data from multiple child classes and display the value at the end

class ManifestBuilder
{

  static $manifest;

  function __construct( )
  {
    $this->get_manifest( );
  }

  function get_manifest( )
  { 
    include 'manifest.php';
    include 'sub1/manifest.php';
    include 'sub2/manifest.php';
    var_dump ( ManifestBuilder::$manifest ); 
  }

  function add_manifest( $var )
  {
    ManifestBuilder::$manifest .= $var;
  }


}

new ManifestBuilder( );

Each child looks like this

class Manifest extends ManifestBuilder 
{

  function __construct( )
  {
    $this->manifest( );
  }

  function manifest( )
  {

    parent::add_manifest( 'manifest1' );

  }

}

new Manifest( );

The problem is that I want to name the class the same on each child so I can easily move them around, but I am getting an error that class names cannot be the same (expected).

How can I solve this? I want to have multiple child classes be able to add to a variable in the parent class.

Thanks.

You can't. It's as simple as that.

And it makes sense too. If you need further functionality on the same class, simply refactor it. If you need a child class, extend it.