Cannot re-assign $this

[Guest]

I know I have seen this somewhere before. However after 45 min of searching, can't seem to find the solution today.

 

Fatal error: Cannot re-assign $this in G:\Corporate Websites\PCandStuff\catalog\admin\includes\classes\upload.php on line 31

 

THANKS LOTS

[postma]

you must use unset($this); instead of $this = null; this was recently changed in PHP5