PHP and Aptana, unset keyword gets underlined like there is an syntax error

[dani3l]

i have this simple loop:\[code\] for($i=$_POST['position'];$i<count($myFiles);$i++) { $withoutNumber = explode("_",$myFiles[$i]); $noNr = unset($withoutNumber[0]); }\[/code\]my code editor is \[code\]Aptana\[/code\], and the problem is that when i write this code i get the \[code\]unset\[/code\] keyword underlined like is an syntax error and i have no idea why that happens. I can not test the code right now(this loop is part of a complex code) so i don't really know if the problem is real or not. What do you think about this,what the problem could be? thanks