好的，当我自己测试你的解决方案时，它可以很好地工作，但作为完整代码的一部分，它仍然无法正常工作。首先是在没有出现提示框的情况下运行，并且在尝试某些解决方案时它说我在第一行收到预期的表达式错误。任何人都可以帮助解决这个问题吗？ 提前谢谢。
<?php
$firstname = $_POST['firstname'];
$surname = $_POST['surname'];
$housenum = $_POST['housenumber'];
$contactnum = $_POST['contactnumber'];
$email = $_POST['email'];
$city = $_POST['city'];
$county = $_POST['county'];
$username = $_POST['username'];
$password = $_POST['password'];
$repeatpassword = $_POST['passwordrepeat'];
$postcode = $_POST['postcode'];
$uniid = $_POST['uniid'];
$usertype = $_POST['usertype'];
if ($password == $repeatpassword) {
if (strlen("$password") >= 8) {
// when all tests are run queries etc can replace these comments.
if (strlen("$postcode") >= 6 && strlen("$postcode") <= 7) {
if (strlen("$uniid") == 9) {
if (strlen("$firstname") != 0 && strlen("$surname") != 0) {
if (strlen("$email") != 0) {
if (strlen ("$city") != 0) {
if (strlen ("$county") != 0) {
if (strlen("$contactnum") == 11) {
// collects input from user from the signup form using $_POST method.
// inserts data into the respective column in table userinfo in the mysql database systemone.
// connect to database
$con=mysqli_connect("localhost:3306","root","123paulrivers","systemone");
// Check connection
if (mysqli_connect_errno())
{
// if connection to database fails. States error.
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
if ($usertype == "Administration") {
?>
<body onLoad = "promptMessage();">
<script type='text/javascript'>
function promptMessage() {
var x = 38773;
var code = prompt('Enter the administration code you have been given:', 'Enter code here');
if (code == x) {
alert('Admin code accepted');
} else {
prompt('The code you hae entered is inccorect', 'Enter code here or change Usertype');
}
}
</script>
</body>
<?php
}
$sql="INSERT INTO completeinfo (FirstName, Surname, UniID, HouseNumber, AddressLineOne, AddressLineTwo, City, PostCode, County, PhoneNumber, Email, Username, Password, UserType)
VALUES
('$_POST[firstname]','$_POST[surname]','$_POST[uniid]','$_POST[housenumber]','$_POST[addresslineone]','$_POST[addresslinetwo]','$_POST[city]','$_POST[postcode]','$_POST[county]','$_POST[contactnumber]','$_POST[email]','$_POST[username]','$_POST[password]','$_POST[usertype]')";
if (!mysqli_query($con,$sql)) {
die('Error: ' . mysqli_error($con));
}
else {
// collects input from user from the signup form using $_POST method.
// inserts data into the respective column in table account in the mysql database systemone.
// SHA1 is an encryption for all passwords entered to improve security.
// states if there was an error or record was added successfully.
// add if clause checking to see the user type if pg perform $postgrad, if lecturer perform $lecturer.
if ($usertype == "Post Graduate") {
$postgrad = "INSERT INTO postgraduate (FirstName, Surname, UniID, Username) SELECT Firstname, Surname, UniID, Username FROM completeinfo WHERE UserType = 'Post Graduate'";
if (!mysqli_query($con,$postgrad)) {
die('Error: ' . mysqli_error($con));
}
else {
header("Location:SignUpComplete.html");
}
}
if ($usertype == "Lecturer") {
$lecturer = "INSERT INTO lecturer (FirstName, Surname, UniID, Username) SELECT Firstname, Surname, UniID, Username FROM completeinfo WHERE UserType = 'Lecturer'";
if (!mysqli_query($con,$lecturer)) {
die('Error: ' . mysqli_error($con));
}
else {
header("Location:SignUpComplete.html");
}
}
}
header("Location:SignUpComplete.html");
} else {
header("Location:ContactNumberFail.html");
}
} else {
header("Location:CountyFail.html");
}
} else {
header("Location:CityFail.html");
}
} else {
header("Location:EmailFail.html");
}
} else {
header("Location:NameFail.html");
}
} else {
header("Location:UniIDFail.html");
}
} else {
header("Location:PostCodeFail.html");
}
} else {
header("Location:PasswordLengthFail.html");
}
} else {
header("Location:PasswordMatchFail.html");
}
?>
上面是PHP，下面是HTML表单，它将信息发送给PHP。
<body>
<!--Form sends information entered by the user to userinfo.php
for processing. Each name value is the variable which is called
in the php doc.-->
<form action="StoreUserInfo.php" method="post">
User Type: <select name="usertype">
<option>Lecturer</option>
<option>Post Graduate</option>
<option>Administration</option>
</select><br />
First Name: <input type="text" name="firstname"/><br />
Surname: <input type="text" name="surname"/><br />
Uni ID: <input type="number" name="uniid" /><br />
House Number: <input type="number" name="housenumber"/><br />
Address Line One: <input type="text" name="addresslineone"/><br />
Address Line Two: <input type="text" name="addresslinetwo"/><br />
City: <input type="text" name="city"/><br />
Post Code: <input type="text" name="postcode"/><br />
County: <input type="text" name="county"/><br />
Contact Number: <input type="number" name="contactnumber"/><br />
Email: <input type="email" name="email"/><br />
Username: <input type="text" name="username" /><br />
Password: <input type="password" name="password" /><br />
Re-enter Password: <input type="password" name="passwordrepeat" /><br />
<input type="submit" value="Submit"/>
</form>
</body>
答案 0 :(得分：1)
缺少引文
<body onLoad = "promptMessage();">
以下是重做的整个代码：
<?
if ($usertype == "Administration") {
?>
<body onLoad = "promptMessage();">
<script type='text/javascript'>
function promptMessage() {
var x = 38773;
var code = prompt('Enter the administration code you have been given:', 'Enter code here');
if (code == x) {
alert('Admin code accepted');
} else {
prompt('The code you hae entered is inccorect', 'Enter code here or change Usertype');
}
}
</script>
</body>
你应该用分号结束你的javascript语句; 例如：
`var x = 38773;`
和 像你一样加载javascript：
<body onLoad = "promptMessage();">
被认为是不好的做法。
你可以尝试考虑使用类似的东西：
<script type="text/javascript">
window.onload = promptMessage;
</script>