W3Schools Tryit Editor

index.php

Html.php

<?php
include "Html.php";
use Html as H;
$table = new H\Table();
$table->title = "My table";
$table->numRows = 5;
?>

<html>
<body>

<?php $table->message(); ?>

</body>
</html>

<?php
namespace Html;
class Table {
  public $title = "";
  public $numRows = 0;

  public function message() {
    echo "<p>Table '{$this->title}' has {$this->numRows} rows.</p>";
  }
}

class Row {
  public $numCells = 0;
  public function message() {
    echo "<p>The row has {$this->numCells} cells.</p>";
  }
}
?>