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141 lines
3.9 KiB
141 lines
3.9 KiB
3 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>score.php</title>
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</head>
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<body>
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<?php
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session_start();
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?>
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<?php
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include("connect.php");
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$name=$_POST['XM'];
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$kcm=$_POST['KCM'];
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$score=$_POST['CJ'];
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if(isset($_POST['录入']))
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{
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if(!strlen($name))
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{
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echo "<script>alert(\"姓名处不能为空\");</script>";
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exit();}
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$sql="select XM,KCM from cj where XM='$name' and KCM='$kcm'";
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$result=mysqli_query($conn,$sql);
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if(mysqli_num_rows($result))
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{
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echo "<script>alert(\"该学生此课程成绩已录入\");</script>";
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exit();}
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$sql="insert into cj(XM,KCM,CJ) values('$name','$kcm','$score')";
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$result=mysqli_query($conn,$sql);
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if($result)
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{
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echo "<script>alert(\"录入成功\");</script>";
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$result=mysqli_query($conn,"select *from cj where XM='$name' and KCM='$kcm';");
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$row=mysqli_fetch_array($result);
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echo "<table border <tr><th>姓名</th><th>课程名</th><th>成绩</th></tr>";
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echo "<tr><th>".$row['XM']."</th>";
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echo "<th width=80px>".$row['KCM']."</th>";
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echo "<th width=60px>".$row['CJ']."</th></tr>";
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echo "</table>";}
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else{
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echo "<script>alert(\"录入失败\");</script>";
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exit();}
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}
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if(isset($_POST['更新']))
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{
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if(!strlen($name)||!strlen($kcm)||!strlen($score))
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{
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echo "<script>alert(\"请填写完整信息\");</script>";
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exit();}
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$sql="select XM from cj where XM='$name'";
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$result=mysqli_query($conn,$sql);
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if(!mysqli_num_rows($result)){
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echo "<script>alert(\"该学生不存在\");</script>";
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exit();}
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$sql="update cj set CJ='$score' where XM='$name' and KCM='$kcm'";
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$result=mysqli_query($conn,$sql);
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if($result)
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{
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echo "<script>alert(\"更新成功\");</script>";
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$result=mysqli_query($conn,"select *from cj where XM='$name' and KCM='$kcm'");
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$row=mysqli_fetch_array($result);
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echo "<table border <tr><th>姓名</th><th>课程名</th><th>成绩</th></tr>";
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echo "<tr><th>".$row['XM']."</th>";
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echo "<th width=80px>".$row['KCM']."</th>";
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echo "<th width=40px>".$row['CJ']."</th></tr>";
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echo "</table>";
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}
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else
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{
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echo "<script>alert(\"更新失败\");</script>";
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exit();}
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}
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if(isset($_POST['查询']))
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{
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if(strlen($name))
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{
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$sql="select *from cj where XM='$name'";
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$result=mysqli_query($conn,$sql);
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if(mysqli_num_rows($result))
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{
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echo "<table border <tr><th>姓名</th><th>课程名</th><th>成绩</th></tr>";
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while($row=mysqli_fetch_array($result))
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{
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echo "<tr><th>".$row['XM']."</th>";
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echo "<th width=80px>".$row['KCM']."</th>";
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echo "<th width=60px>".$row['CJ']."</th></tr>";
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}
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echo "</table>";
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}
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else
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{
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echo "<script>alert(\"该学生不存在\");</script>";
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exit();}
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}
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else if(strlen($kcm))
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{
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$sql="select *from cj where KCM='$kcm'";
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$result=mysqli_query($conn,$sql);
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if(mysqli_num_rows($result))
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{
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echo "<table border <tr><th>姓名</th><th>课程名</th><th>成绩</th></tr>";
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while($row=mysqli_fetch_array($result))
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{
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echo "<tr><th>".$row['XM']."</th>";
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echo "<th width=80px>".$row['KCM']."</th>";
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echo "<th width=60px>".$row['CJ']."</th></tr>";}
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echo "</table>";}
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else
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{
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echo "<script>alert(\"该课程无学生选择\");</script>";
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exit();}
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}
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}
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if(isset($_POST['删除']))
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{
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if(!strlen($name)&&!strlen($kcm))
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{
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echo "<script>alert(\"姓名不能为空或课程名不能为空\");</script>";
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exit();}
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$sql="select XM from cj where XM='$name' and KCM='$kcm'";
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$result=mysqli_query($conn,$sql);
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if(!$result)
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{
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echo "<script>alert(\"该学生不存在\");</script>";
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exit();}
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$sql="delete from cj where XM='$name' and KCM='$kcm'";
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$result=mysqli_query($conn,$sql);
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if($result)
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{
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echo "<script>alert(\"删除成功\");</script>";
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exit();}
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else
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{
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echo "<script>alert(\"删除失败\");</script>";
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exit();}
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}
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mysqli_close($conn);
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?>
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</body>
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</html>
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