Description:
------------
I think this should work without errors.... And that would make runkit very useful for dynamic inheritance ... This is an example how to use one universal sql object that would load proper sql driver dynamically ... 


Reproduce code:
---------------
<?php 

class sql_mysql {
  function connect () {
    $this->link = 'Mysql Link';
    }
}

class sql_oracle {
  function connect () {
    $this->link = 'Oracle Link';
  }
}

class sql {

  function open ($driver, $connect_string) {
    runkit_class_adopt('sql', "sql_$driver");
    $this->connect($connect_string);
  }

  function close () {
    runkit_class_emancipate('sql');
  }

  }

$sql = new sql();
$sql->open('mysql', '...');
echo $sql->link . "\n";
var_dump(get_parent_class($sql));

$sql->close();

$sql->open('oracle', '...');
echo $sql->link . "\n";
var_dump(get_parent_class($sql));

?>

Expected result:
----------------
Output:
Mysql Link
string(9) "sql_mysql"
Oracle Link
string(10) "sql_oracle"

Actual result:
--------------
Output:
Mysql Link
bool(false)
Error: Class sql has no parent to emancipate from ...
Mysql Link
bool(false)

It seams that runkit just copies class methods, and does not actually extend the class, and becouse of that it cannot emancipate and again adopt it dynamically ...