how to echo html in php code example

Example 1: php echo alot of html

echo <<<CODE
  <table>
  <tr> 
    <td><b>Hello World</b></td>
  </tr>
  </table>
CODE;

Example 2: how to show rext in php

<?php
  $hello = "HELO";
  echo "hello";
	if (youwantvar = on) {
    echo $hello
    }
  
  
  ?>