Description:
------------
PHP version: 5.3.2

I think addition operator have a problem.
Pls run the script below and the code in "Test script" box.

<?php
$a = 16.99;
$b = 6.99;
$c = 10;

if ($a < ($b + $c)) {
        print "<";
} else if ($a == ($b + $c)) {
        print "==";
} else {
        print ">";
}

print "\n";
print $a .":". ($b + $c);
print "\n";
?>

If the number is 16.98, the result will be ok.

Test script:
---------------
<?php
for ($x=0;$x<100;$x++ ) {
        for ($y=10;$y<100;$y++) {
                $str = $x.'.'.$y;
                print $str;
                $a = floatVal($str);
                $b = floatVal($x);
                $c = floatVal('0.'.$y);
                if ($a < ($b + $c)) {
                        print "<";
                } else if ($a == ($b + $c)) {
                        print "==";
                } else {
                        print ">";
                }
                print "\n";
        }
}