Source for file ext.php

<?
 
/* Finds the first empty "slot" in an array */
function empty_slot ($arr) 
{
    $c=-1;
    foreach ($arr as $num => $val)
    {
    if (is_numeric($num)) ++$c;
    if (($num!=$c)) return $c;
    }
    return ++$c;
}
 
function class_conv($obj,$to)
{
    $objname=get_class($obj);
    $temp=serialize($obj);
    $temp=ereg_replace('O:'.strlen($objname).':"'.$objname.'":',
               'O:'.strlen($to     ).':"'.$to     .'":',$temp);
    return unserialize($temp);
}