alert(\"姓名处不能为空\");";
exit();}
$sql="select XM,KCM from cj where XM='$name' and KCM='$kcm'";
$result=mysqli_query($conn,$sql);
if(mysqli_num_rows($result))
{
echo "";
exit();}
$sql="insert into cj(XM,KCM,CJ) values('$name','$kcm','$score')";
$result=mysqli_query($conn,$sql);
if($result)
{
echo "";
$result=mysqli_query($conn,"select *from cj where XM='$name' and KCM='$kcm';");
$row=mysqli_fetch_array($result);
echo "| 姓名 | 课程名 | 成绩 | ";
echo "| ".$row['XM']." | ";
echo "".$row['KCM']." | ";
echo "".$row['CJ']." |
|---|
";
echo "
";}
else{
echo "";
exit();}
}
if(isset($_POST['更新']))
{
if(!strlen($name)||!strlen($kcm)||!strlen($score))
{
echo "";
exit();}
$sql="select XM from cj where XM='$name'";
$result=mysqli_query($conn,$sql);
if(!mysqli_num_rows($result)){
echo "";
exit();}
$sql="update cj set CJ='$score' where XM='$name' and KCM='$kcm'";
$result=mysqli_query($conn,$sql);
if($result)
{
echo "";
$result=mysqli_query($conn,"select *from cj where XM='$name' and KCM='$kcm'");
$row=mysqli_fetch_array($result);
echo "| 姓名 | 课程名 | 成绩 | ";
echo "| ".$row['XM']." | ";
echo "".$row['KCM']." | ";
echo "".$row['CJ']." |
|---|
";
echo "
";
}
else
{
echo "";
exit();}
}
if(isset($_POST['查询']))
{
if(strlen($name))
{
$sql="select *from cj where XM='$name'";
$result=mysqli_query($conn,$sql);
if(mysqli_num_rows($result))
{
echo "| 姓名 | 课程名 | 成绩 | ";
while($row=mysqli_fetch_array($result))
{
echo "| ".$row['XM']." | ";
echo "".$row['KCM']." | ";
echo "".$row['CJ']." |
|---|
";
}
echo "
";
}
else
{
echo "";
exit();}
}
else if(strlen($kcm))
{
$sql="select *from cj where KCM='$kcm'";
$result=mysqli_query($conn,$sql);
if(mysqli_num_rows($result))
{
echo "| 姓名 | 课程名 | 成绩 | ";
while($row=mysqli_fetch_array($result))
{
echo "| ".$row['XM']." | ";
echo "".$row['KCM']." | ";
echo "".$row['CJ']." |
|---|
";}
echo "
";}
else
{
echo "";
exit();}
}
}
if(isset($_POST['删除']))
{
if(!strlen($name)&&!strlen($kcm))
{
echo "";
exit();}
$sql="select XM from cj where XM='$name' and KCM='$kcm'";
$result=mysqli_query($conn,$sql);
if(!$result)
{
echo "";
exit();}
$sql="delete from cj where XM='$name' and KCM='$kcm'";
$result=mysqli_query($conn,$sql);
if($result)
{
echo "";
exit();}
else
{
echo "";
exit();}
}
mysqli_close($conn);
?>