$a = 5;
    $b =19;
    $c=7;
    $d=30;
    $f=12;
    $response="<font color='green'>".$a."</font>" ;
    echo ''.$a.'-'.$b.'-'.$c.'-'.$d.'-'.$f.'';
    if($b > $a)    ($response = $response."-<font color='green'>".$b."</font>");
    else ($response = $response."-<font color='red'>".$b."</font>");
    if($c > $b)    ($response = $response."-<font color='green'>".$c."</font>");
    else ($response = $response."-<font color='red'>".$c."</font>");
    if($d > $c)    ($response = $response."-<font color='green'>".$d."</font>");
    else ($response = $response."-<font color='red'>".$d."</font>");
    if($f > $d)    ($response = $response."-<font color='green'>".$f."</font>");
    else ($response = $response."-<font color='red'>".$f."</font>");
    echo "<hr>";
    echo $response;