PHP回显INF而不是成绩的结果
我正在开发一个成绩系统，我添加了成绩功能来显示成绩，但我得到的是INF而不是成绩。我得到的结果见图片附件 下面是完整的代码PHP回显INF而不是成绩的结果,php,Php,我正在开发一个成绩系统，我添加了成绩功能来显示成绩，但我得到的是INF而不是成绩。我得到的结果见图片附件 下面是完整的代码 <?php session_start(); error_reporting(0); include('includes/config.php'); ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8">
<?php
session_start();
error_reporting(0);
include('includes/config.php');
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Result System</title>
<link rel="stylesheet" href="css/bootstrap.min.css" media="screen" >
<link rel="stylesheet" href="css/font-awesome.min.css" media="screen" >
<link rel="stylesheet" href="css/animate-css/animate.min.css" media="screen" >
<link rel="stylesheet" href="css/lobipanel/lobipanel.min.css" media="screen" >
<link rel="stylesheet" href="css/prism/prism.css" media="screen" >
<link rel="stylesheet" href="css/main.css" media="screen" >
<script src="js/modernizr/modernizr.min.js"></script>
</head>
<style>
body {
background: url(images/logo.png);
background-size: cover;
background-position: center;
background-repeat: no-repeat;
}
</style>
<body>
<div class="main-wrapper">
<div class="content-wrapper">
<div class="content-container">
<!-- /.left-sidebar -->
<div class="main-page">
<div class="container-fluid">
<div class="row page-title-div">
<div class="col-md-12">
<h2 class="login100-form-title" align="center"><img src="images/nations.png" alt="" height="auto" width="700px"></h2>
</div>
</div>
<!-- /.row -->
<!-- /.row -->
</div>
<!-- /.container-fluid -->
<section class="section">
<div class="container-fluid">
<div class="row">
<div class="col-md-8 col-md-offset-2">
<div class="panel">
<div class="panel-heading">
<div class="panel-title">
<?php
// code Student Data
$rollid=$_POST['rollid'];
$classid=$_POST['class'];
$_SESSION['rollid']=$rollid;
$_SESSION['classid']=$classid;
$query = "SELECT tblstudents.StudentName,tblstudents.RollId,tblstudents.RegDate,tblstudents.StudentId,tblstudents.Status,tblclasses.ClassName,tblclasses.Section from tblstudents join tblclasses on tblclasses.id=tblstudents.ClassId where tblstudents.RollId=:rollid and tblstudents.ClassId=:classid ";
$stmt = $dbh->prepare($query);
$stmt->bindParam(':rollid',$rollid,PDO::PARAM_STR);
$stmt->bindParam(':classid',$classid,PDO::PARAM_STR);
$stmt->execute();
$resultss=$stmt->fetchAll(PDO::FETCH_OBJ);
$cnt=1;
if($stmt->rowCount() > 0)
{
foreach($resultss as $row)
{ ?>
<p><b>Student Name :</b> <?php echo htmlentities($row->StudentName);?></p>
<p><b>Student Roll Id :</b> <?php echo htmlentities($row->RollId);?>
<p><b>Student Class:</b> <?php echo htmlentities($row->ClassName);?>(<?php echo htmlentities($row->Section);?>)
<?php }
?>
</div>
<div class="panel-body p-20">
<table class="table table-hover table-bordered">
<thead>
<tr>
<th>#</th>
<th>Subject</th>
<th>Marks</th>
</tr>
</thead>
<tbody>
<?php
// Code for result
$query ="select t.StudentName,t.RollId,t.ClassId,t.marks,SubjectId,tblsubjects.SubjectName from (select sts.StudentName,sts.RollId,sts.ClassId,tr.marks,SubjectId from tblstudents as sts join tblresult as tr on tr.StudentId=sts.StudentId) as t join tblsubjects on tblsubjects.id=t.SubjectId where (t.RollId=:rollid and t.ClassId=:classid)";
$query= $dbh -> prepare($query);
$query->bindParam(':rollid',$rollid,PDO::PARAM_STR);
$query->bindParam(':classid',$classid,PDO::PARAM_STR);
$query-> execute();
$results = $query -> fetchAll(PDO::FETCH_OBJ);
$cnt=1;
if($countrow=$query->rowCount()>0)
{
foreach($results as $result){
?>
<tr>
<th scope="row"><?php echo htmlentities($cnt);?></th>
<td><?php echo htmlentities($result->SubjectName);?></td>
<td><?php echo htmlentities($totalmarks=$result->marks);?></td>
</tr>
<?php
$totlcount+=$totalmarks;
$cnt++;}
?>
<?php
$grade = $totlcount*(100)/$outof;
if ($grade >= 70)
{
$class = "<span> A(Excellent) </span>";
}
else if (($grade < 70) && ($grade >= 60))
{
$class = "<span> B(V.Good) </span>";
}
else if (($grade < 69) && ($grade >=50))
{
$class = "<span> C(Good)</span>";
}
else if (($grade < 49) && ($grade >=45))
{
$class = "<span> D(Average) </span>";
}
else if (($grade < 44) && ($grade >= 40))
{
$class = "<span> E(Below Average)s </span>";
}
else
{
$class = "<span> F(Failed) </span>";
}
?>
<tr>
<th scope="row" colspan="2">Total Marks</th>
<td><b><?php echo htmlentities($totlcount); ?></b> out of <b><?php echo htmlentities($outof=($cnt-1)*100); ?></b></td>
</tr>
<tr>
<th scope="row" colspan="2">Percentage</th>
<td><b><?php echo htmlentities($totlcount*(100)/$outof); ?> %</b></td>
</tr>
<tr>
<th scope="row" colspan="2">Grade</th>
<td><b><?php echo htmlentities($grade); ?> </b></td>
</tr>
<tr>
<th scope="row" colspan="2">Download Result</th>
<td><b><a href="download-result.php">Download </a> </b></td>
</tr>
<?php } else { ?>
<div class="alert alert-warning left-icon-alert" role="alert">
<strong>Notice!</strong> Your result not declare yet
<?php }
?>
</div>
<?php
} else
{?>
<div class="alert alert-danger left-icon-alert" role="alert">
<strong>Oh snap!</strong>
<?php
echo htmlentities("Invalid Reg Number");
}
?>
</div>
</tbody>
</table>
</div>
</div>
<!-- /.panel -->
</div>
<!-- /.col-md-6 -->
<div class="form-group">
<div class="col-sm-6">
<b><a href="index.php" style="color: black;">Back to Home</a></b>
</div>
</div>
</div>
<!-- /.row -->
</div>
<!-- /.container-fluid -->
</section>
<!-- /.section -->
</div>
<!-- /.main-page -->
</div>
<!-- /.content-container -->
</div>
<!-- /.content-wrapper -->
</div>
<!-- /.main-wrapper -->
<script src="js/jquery/jquery-2.2.4.min.js"></script>
<script src="js/bootstrap/bootstrap.min.js"></script>
<script src="js/pace/pace.min.js"></script>
<script src="js/lobipanel/lobipanel.min.js"></script>
<script src="js/iscroll/iscroll.js"></script>
<script src="js/prism/prism.js"></script>
<script src="js/main.js"></script>
<script>
$(function($) {
});
</script>
</body>
</html>
结果系统
身体{
背景：url（images/logo.png）；
背景尺寸：封面；
背景位置：中心；
背景重复：无重复；
}
学生姓名：
学生名册编号：
学生班级：（）
#
主题
标志
总分
从…里面
百分比
%
等级
下载结果
注意您的结果尚未声明
哦，快
$（函数（$）{
});
<?php
$grade = $totlcount*(100)/$outof;
if ($grade >= 70)
{
$class = "<span> A(Excellent) </span>";
}
else if (($grade < 70) && ($grade >= 60))
{
$class = "<span> B(V.Good) </span>";
}
else if (($grade < 69) && ($grade >=50))
{
$class = "<span> C(Good)</span>";
}
else if (($grade < 49) && ($grade >=45))
{
$class = "<span> D(Average) </span>";
}
else if (($grade < 44) && ($grade >= 40))
{
$class = "<span> E(Below Average)s </span>";
}
else
{
$class = "<span> F(Failed) </span>";
}
?>
<th scope="row" colspan="2">Grade</th>
<td><b><?php echo htmlentities($grade); ?> </b></td>
等级
$outof$grade$outof = ($cnt-1) * 100
$grade = $totlcount*(100)/$outof;
在您使用它计算
$grade$outof$outof = ($cnt-1) * 100
$grade = $totlcount*(100)/$outof;
除了不起作用的分数，一切都很好。除了不起作用的分数，一切都很好。这回答了你的问题吗？如果没有，你能提供更多的信息来帮助回答这个问题吗？否则，请考虑标记接受的答案（在上/下投票箭头下的复选标记）。看，这回答了你的问题吗？如果没有，你能提供更多的信息来帮助回答这个问题吗？否则，请考虑标记接受的答案（在上/下投票箭头下的复选标记）。看到和