PHP: Nested for loops create table with alternating color rows

Start PHP Code RESULT

1 2 3 4 5 6 7 8 9 10 11 12
2 4 6 8 10 12 14 16 18 20 22 24
3 6 9 12 15 18 21 24 27 30 33 36
4 8 12 16 20 24 28 32 36 40 44 48
5 10 15 20 25 30 35 40 45 50 55 60
6 12 18 24 30 36 42 48 54 60 66 72
7 14 21 28 35 42 49 56 63 70 77 84
8 16 24 32 40 48 56 64 72 80 88 96
9 18 27 36 45 54 63 72 81 90 99 108
10 20 30 40 50 60 70 80 90 100 110 120
11 22 33 44 55 66 77 88 99 110 121 132
12 24 36 48 60 72 84 96 108 120 132 144

End PHP Code RESULT

 

The PHP Code START
<?php

function useColor() {
  static $ColorValue;
  
    if ($ColorValue == "#00ff00") {
      $ColorValue = "#ccffcc";
    }
    else {
      $ColorValue = "#00ff00";
    }
    return($ColorValue);
}

print "<table border=\"1\" cellpadding=\"5\">\n";
    for ($y=1; $y <= 12; $y++) {
    
    // get the color for this row
        $RowColor = useColor();
        print "<tr bgcolor=\"$RowColor\">\n";
        for ($x=1; $x <= 12; $x++) {
        
        
            print "\t<td>";
            print ($x*$y);
            print "</td>\n";
        }
        print "</tr>\n";
    }
    print "</table>";
?>
The PHP Code END