ProcessingInstruction Nodes

• Represents a processing instruction like

  <?robots index="yes" follow="no"?>

• No children

• Some have pseudo-attributes; some don't:

  <?php 
    mysql_connect("database.unc.edu", "clerk", "password"); 
    $result = mysql("music", "SELECT LastName, FirstName FROM Employees 
      ORDER BY LastName, FirstName"); 
    $i = 0;
    while ($i < mysql_numrows ($result)) {
       $fields = mysql_fetch_row($result);
       echo "<person>$fields[1] $fields[0] </person>\r\n";
       $i++;
    }
    mysql_close();
  ?>