PHP入门教程第九节 综合作业

define ("YW","5.00");
define ("SX","8.30");
define ("YY","3.00");
define ("JZ","0.9");
define ("BZ","0.8");
define ("WZ","0.5");
$yuwen =$_POST['yuwen'];
$shuxue =$_POST['shuxue'];
$yingyu =$_POST['yingyu'];
$shuzi = $yuwen + $shuxue + $yingyu;
$ywzj = $yuwen * YW;
$sxzj = $shuxue * SX;
$yyzj = $yingyu * YY;
$zj = $ywzj + $sxzj + $yyzj;
?>

if ($shuzi<5) {
$jz= $zj * JZ;
?>

}
else if (($shuzi>5)&&($shuzi<=10)) {
$jz= $zj * BZ;
?>

}
else if ($shuzi>10) {

$jz= $zj * WZ;
?>

}
?>