我有一个URL链接，点击链接后，必须在页面打开时填充字段，下面是URL链接，表格必须填充少量字段，如名称等字段，idocode和电子邮件必须填充，其余由用户和提交按钮无效，我做错了什么，
网址：'http://www.domain.com/register/registration.php?token= $ token＆amp; stud_id = stud_id'
<?php
error_reporting(1);
session_start();
include 'includes/connect.php';
$student_id = $_GET["id"];
$_SESSION['student_id'] = $student_id;
$token = $_GET["tokenk"];
$_SESSION['token'] = $token;
if (isset($_GET["id"]) && isset($_GET["tk"])) {
$sql = "SELECT * FROM student WHERE student_id=" . $student_id . " and token='" . $token . "'";
$stmt = $pdo->prepare($sql);
$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC);
if (!empty($result)) {
$sql = "UPDATE student SET first_name=:first_name, middle_name=:middle_name, last_name=:last_name WHERE student_id=:student_id";
$stmt->bindValue(':first_name', $first_name);
$stmt->bindValue(':middle_name', $middle_name);
$stmt->bindValue(':last_name', $last_name);
$stmt->bindValue(':student_id', $student_id);
$result = $stmt->execute();
} else {
}
}
if ($_POST["Submit"] == "Submit") {
//echo '<pre>';print_r($_POST["name"]);exit;
$ccode = $_POST["idode"];
$first_name = $_POST['first_name'];
$middle_name = $_POST['middle_name'];
$last_name = $_POST['last_name'];
$course = $_POST["course"];
$email = $_POST['email'];
$password = $_POST["password"];
$confirm_password = $_POST["confirm_password"];
//echo "<br/>In post"; die();
//echo $name.'>>>>'.$email.'>>>>'.$idcode;exit;
add_student_session($_POST);
$validate = add_student_validator($_POST);
//echo '<pre>';print_r($validate);exit;
if (isset($validate) && $validate) {
//echo "<br/>Validated: TRUE<br/>"; die();
$sql = "SELECT COUNT(*) AS num FROM student WHERE student_id = :student_id";
$stmt = $pdo->prepare($sql);
$stmt->bindValue(':idcode', $idcode);
$stmt->bindValue(':first_name', $first_name);
$stmt->bindValue(':middle_name', $middle_name);
$stmt->bindValue(':last_name', $last_name);
$stmt->bindValue(':course', $course);
$stmt->bindValue(':date_of_birth', $date_of_birth);
$stmt->bindValue(':email', $email);
$stmt->bindValue(':password', $password);
$stmt->execute();
$row = $stmt->fetch(PDO::FETCH_ASSOC);
if ($row['num'] > 0) {
$_SESSION["already_exist"] = TRUE;
} else {
//echo "<br/>Validated: FALSE<br/>"; die();
$sql = "INSERT INTO student (course, date_of_birth, password) VALUES (:course, :date_of_birth, :password)";
$stmt = $pdo->prepare($sql);
//echo "<br/>CCODE: ".$idcode;exit;
$stmt->bindValue(':course', $course);
$stmt->bindValue(':date_of_birth', $date_of_birth);
$stmt->bindValue(':password', $password);
$stmt->bindValue(':confirm_password', $confirm_password);
if ($_POST["password"] != $_POST["confirm_password"]) {
echo 'passwords do not match';
}
$result1 = $stmt->execute();
//echo $result ;exit;
if ($result1) {
echo '<div><p class="text-success">Created Successfully!</p></>';
}
clear_session();
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Register</title>
<link rel="stylesheet" href="css/bootstrap.min.css" type="text/css"/>
<link rel="stylesheet" href="css/bootstrap.min.custom.css" type="text/css"/>
<script src="js/bootstrap.min.js"></script>
<script language="javascript" src="js/calendar.js"></script>
</head>
<body>
<div class="container">
<div class="row">
<div class="Absolute-Center is-Responsive">
<div class="col-md-10 col-md-offset-2 well">
<form class="form-horizontal" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"
role="form">
<legend>Registration</legend>
<div class="form-group">
<label for="name" class="col-xs-2 control-label">CCODE:</label>
<div class="col-xs-10">
<input class="form-control" type="text" name="idcode" required
placeholder="CCODE/EMPLOYEE CODE/ ID CODE"
value="<?php echo @$_POST['idcode']; ?>" readonly/>
<label for="idcode" generated="true" class="error">
<?= isset($error_hash["idcode"]) ? $error_hash["idcode"] : "" ?>
</label>
</div>
</div>
<div class="form-group">
<label for="birthday" class="col-xs-2 control-label">Name:</label>
<div class="col-xs-10">
<div class="form-inline">
<div class="form-group">
<input class="form-control" type="text" name="first_name" required
placeholder="First Name"
value="<?php echo @$_POST['first_name']; ?>"/>
<label for="first_name" generated="true" class="error">
<?= isset($error_hash["first_name"]) ? $error_hash["first_name"] : "" ?>
</label>
</div>
<div class="form-group">
<input class="form-control" type="text" name="middle_name" required
placeholder="Middle Name"
value="<?php echo @$_POST['middle_name']; ?>"/>
<label for="middle_name" generated="true" class="error">
<?= isset($error_hash["middle_name"]) ? $error_hash["middle_name"] : "" ?>
</label>
</div>
<div class="form-group">
<input class="form-control" type="text" name="last_name" required
placeholder="Last Name" value="<?php echo @$_POST['last_name']; ?>"/>
<label for="middle_name" generated="true" class="error">
<?= isset($error_hash["last_name"]) ? $error_hash["last_name"] : "" ?>
</label>
</div>
</div>
</div>
</div>
<div class="form-group">
<label for="name" class="col-xs-2 control-label">Designation:</label>
<div class="col-xs-10">
<input class="form-control" type="text" name="course" required
placeholder="Designation"
value="<?= isset($_SESSION["course"]) ? $_SESSION["course"] : ""; ?>"/>
<label for="course" generated="true" class="error">
<?= isset($error_hash["course"]) ? $error_hash["course"] : "" ?>
</label>
</div>
</div>
<div class="form-group">
<label for="name" class="col-xs-2 control-label">Date-Of-Birth:</label>
<div class="col-xs-8">
<select name="dd">
<option value="">Date</option>
<?php
for ($i = 1; $i <= 31; $i++) {
echo "<option value='$i'>" . $i . "</option>";
}
?>
</select>
<select name="mm">
<option value="">Month</option>
<?php
for ($i = 1; $i <= 12; $i++) {
echo "<option value='$i'>" . $i . "</option>";
}
?>
</select>
<select name="yy">
<option value="">Year</option>
<?php
for ($i = 1960; $i <= 2020; $i++) {
echo "<option value='$i'>" . $i . "</option>";
}
?>
</select>
</div>
</div>
<div class="form-group">
<label for="name" class="col-xs-2 control-label">Email:</label>
<div class="col-xs-10">
<input class="form-control" type="email" name="email" required placeholder="Email"
value="<?php echo @$_POST['email']; ?>" readonly/>
<label for="email" generated="true" class="error">
<?= isset($error_hash["email"]) ? $error_hash["email"] : "" ?>
</label>
</div>
</div>
<div class="form-group">
<label for="name" class="col-xs-2 control-label">Password:</label>
<div class="col-xs-10">
<input class="form-control" type="password" name="password" required
placeholder="Password"
value="<?= isset($_SESSION["password"]) ? $_SESSION["password"] : ""; ?>"/>
<label for="name" generated="true" class="error">
<?= isset($error_hash["password"]) ? $error_hash["password"] : "" ?>
</label>
</div>
</div>
<div class="form-group">
<label for="name" class="col-xs-2 control-label">Confirm Password:</label>
<div class="col-xs-10">
<input class="form-control" type="password" name="confirm_password" required
placeholder="Confirm Password"
value="<?= isset($_SESSION["confirm_password"]) ? $_SESSION["confirm_password"] : ""; ?>"/>
<label for="name" generated="true" class="error">
<?= isset($error_hash["confirm_password"]) ? $error_hash["confirm_password"] : "" ?>
</label>
</div>
</div>
</form>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<div class="form-actions">
<input type="submit" name="Submit" value="Submit" class="btn btn-primary"/>
</div>
<br>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</html>