note 59637 added to function.round

I cannot use round function to convert the following number.. 1075518.525 <? $x=1075518.525; echo round($x,2); ?> The ans should be 1075518.53 .. but the result is 1075518.52 why not .53 .. but it's .52 it's so strange... anyone know the answer? ---- Manual Page -- http://www.php.net/manual/en/function.round.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+59637 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+59637&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+59637&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+59637&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+59637&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+59637&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+59637&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+59637&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+59637&report=yes Search -- http://master.php.net/manage/user-notes.php