其他声明＆＃34;无效的表单详细信息，请确保您没有输入相同的主题两次始终显示＆＃34; ，即使我还没有提交任何细节。此外，当我输入有效的详细信息时，没有数据提交到我的phpmyadmin数据库。没有显示任何错误。
<?php
error_reporting(E_ALL); ini_set('display_errors', 1);
require("includes/config.php");
//if not logged in redirect to login page
if(!$user->is_logged_in()){ header('Location: login.php'); }
//define page title
$title = 'Register Past Student';
?>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<title>Past Student</title>
<!-- Bootstrap Core CSS -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- Custom Fonts -->
<link href="font-awesome/css/font-awesome.min.css" rel="stylesheet" type="text/css">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<form class="form-horizontal" method="post" action= "">
<fieldset>
<!-- Form Name -->
<legend> <a href= "memberpage.php"> Register A Past Student </a> </legend>
<h3> Enter the AS grades of students </h3>
<br>
<!-- Text input-->
<div class="form-group">
<label class="col-md-4 control-label" for="name">Student Name</label>
<div class="col-md-4">
<input id="name" name="name" type="text" placeholder="First and Last Name" class="form-control input-md" required="">
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label" for="subject1">Subject 1</label>
<div class="col-md-4">
<select id="subject1" name="subject1" class="form-control" required="">
<option value = "">-</option>
<option value="Chemistry">Chemistry</option>
<option value="Computing">Computing</option>
<option value="Economics">Economics</option>
<option value="Further Maths">Further Maths</option>
<oprion value="Maths">Maths</oprion>
<option value="Physics">Physics</option>
</select>
</div>
</div>
<!-- Select Basic -->
<div class="form-group">
<label class="col-md-4 control-label" for="grade1">Grade 1</label>
<div class="col-md-4">
<select id="grade1" name="grade1" class="form-control" required="">
<option value = "">-</option>
<option value="A">A</option>
<option value="B">B</option>
<option value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
<option value="U">U</option>
</select>
</div>
</div>
<!-- Select Basic -->
<div class="form-group">
<label class="col-md-4 control-label" for="subject2">Subject 2</label>
<div class="col-md-4">
<select id="subject2" name="subject2" class="form-control" required="">
<option value = "">-</option>
<option value="Chemistry">Chemistry</option>
<option value="Computing">Computing</option>
<option value="Economics">Economics</option>
<option value="Further Maths">Further Maths</option>
<option value="Physics">Physics</option>
</select>
</div>
</div>
<!-- Select Basic -->
<div class="form-group">
<label class="col-md-4 control-label" for="grade2">Grade 2</label>
<div class="col-md-4">
<select id="grade2" name="grade2" class="form-control" required="">
<option value = "">-</option>
<option value="A">A</option>
<option value="B">B</option>
<option value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
<option value="U">U</option>
</select>
</div>
</div>
<!-- Select Basic -->
<div class="form-group">
<label class="col-md-4 control-label" for="subject3">Subject 3</label>
<div class="col-md-4">
<select id="subject3" name="subject3" class="form-control" required="">
<option value="Chemistry">Chemistry</option>
<option value="Computing">Computing</option>
<option value="Economics">Economics</option>
<option value="Further Maths">Further Maths</option>
<option value="Physics">Physics</option>
</select>
</div>
</div>
<!-- Select Basic -->
<div class="form-group">
<label class="col-md-4 control-label" for="grade3">Grade 3</label>
<div class="col-md-4">
<select id="grade3" name="grade3" class="form-control" required="">
<option value="A">A</option>
<option value="B">B</option>
<option value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
<option value="U">U</option>
</select>
</div>
</div>
<!-- Select Basic -->
<div class="form-group">
<label class="col-md-4 control-label" for="subject4">Subject 4</label>
<div class="col-md-4">
<select id="subject3" name="subject4" class="form-control" required="">
<option value = "">-</option>
<option value="Chemistry">Chemistry</option>
<option value="Computing">Computing</option>
<option value="Economics">Economics</option>
<option value="Further Maths">Further Maths</option>
<option value="Physics">Physics</option>
</select>
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label" for="grade4">Grade 4</label>
<div class="col-md-4">
<select id="grade1" name="grade4" class="form-control" required="">
<option value = "">-</option>
<option value="A">A</option>
<option value="B">B</option>
<option value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
<option value="U">U</option>
</select>
</div>
</div>
<!-- Multiple Radios (inline) -->
<div class="form-group">
<label class="col-md-4 control-label" for="attendance">Attendance</label>
<div class="col-md-4">
<input id="attendance" name="attendance" type="text" placeholder="enter in format 99.9 " class="form-control input-md" required="">
</div>
</div>
<!-- Multiple Radios -->
<div class="form-group">
<label class="col-md-4 control-label" for="gender">Gender</label>
<div class="col-md-4">
<div class="radio">
<label for="gender-0">
<input type="radio" name="gender" id="gender-0" value="Male" checked="checked">
Male
</label>
</div>
<div class="radio">
<label for="gender-1">
<input type="radio" name="gender" id="gender-1" value="Female">
Female
</label>
</div>
</div>
</div>
<!-- Button -->
<div class="form-group">
<label class="col-md-4 control-label" id="submit">Click Submit</label>
<div class="col-md-4">
<button id="singlebutton" type="submit" name="submit" class="btn btn-success">Submit</button>
</div>
</div>
</fieldset>
</form>
<?php
//require("includes/config.php");
error_reporting(E_ERROR | E_WARNING | E_PARSE);
if (isset($_POST['name'])) { //checks if the name has posted value then inserts the data
$name = $_POST['name'];
$subject1 = $_POST['subject1'];
$grade1 = $_POST['grade1'];
$subject2 = $_POST['subject2'];
$grade2 = $_POST['grade2'];
$subject3 = $_POST['subject3'];
$grade3 = $_POST['grade3'];
$subject4 = $_POST['subject4'];
$grade4 = $_POST['grade4'];
$attendance = $_POST['attendance'];
$gender = $_POST['gender'];
// <--------------Validation for form Post----------------------->
$val = false;
//validation to make sure the form isn't submitted blank and 2 of the same subjects haven't been chosen
if ($subject1 == $subject2 or $subject3 or $subject4) {
$val = true;
}
elseif ($subject2 == $subject1 or $subject3 or $subject4) {
$val = true;
}
elseif ($subject3 == $subject1 or $subject2 or $subject4) {
$val = true;
}
if ($val = false) {
//inserting the data once validated
$q = "INSERT INTO paststudent (name,subject1,grade1,subject2,grade2,subject3,grade3,subject4,grade4,attendance,gender) VALUES (:name, :subject1,:grade1,:subject2,:grade2,:subject3,:grade3,:subject4,:grade4,:attendance,:gender);"; //sql statement add a colon intead of variables so pdo can prepare the statement and prevent any sql injections
$query = $db ->prepare ($q);
$results = $query ->execute (array(
":name" => $name, //points to the variable
":subject1" => $subject1,
":grade1" => $grade1,
":subject2" => $subject2,
":grade2" => $grade2,
":subject3" => $subject3,
":grade3" => $grade3,
":subject4" => $subject4,
":grade4" => $grade4,
":attendance" => $attendanc,
":gender" => $gender
));
header("location:thanks.html");
} else {
echo"Invalid form details, make sure you haven't entered the same subject twice";
}
}
?>
</html>
答案 0 :(得分：0)
你在这里没有比较，你正在分配：
if ($val = false) {
当您将值false分配给变量false时，这将始终评估为$val。因此，您永远不会进入实际尝试将信息存储在数据库中的部分。
虽然我没有得到它上面的逻辑（你应该把它减少到你发布在这里的绝对必要......），你可能想要：
if ($val !== false) {