WTF?? Latest update broke both back and front ends of my Joomla site

// cycle through each stored number
        for($y=0;$y<$Len2;$y++) {
            for($x=0;$x<$Len1*2;$x++)
            // add up the numbers in the diagonal fashion the lattice method uses
            @$Rema2[Floor(($x-1)/2)+1+$y]+=(int)$Rema[$y]{$x
            }
        };

// cycle through each stored number
        for($y=0;$y<$Len2;$y++) {
            for($x=0;$x<$Len1*2;$x++)
            // add up the numbers in the diagonal fashion the lattice method uses
            @$Rema2[Floor(($x-1)/2)+1+$y]+=(int)$Rema[$y][$x];
        }