dbutil backup

from the CI doc i see in the "Backup Your Database" section

// Backup your entire database and assign it to a variable
$backup =& $this->dbutil->backup();

but it brings a runtime error:

Severity: Runtime Notice
Message: Only variables should be assigned by reference

from Php manual
http://php.net/manual/en/language.operat...gnment.php

As of PHP 5, the new operator returns a reference automatically, so assigning the result of new by reference results in an E_DEPRECATED message in PHP 5.3 and later, and an E_STRICT message in earlier versions.


simply removing the & works fine.
please update the doc