我正在研究这个项目并且它已经完成了，它是一个验证用户是否提交无效数据的表单，但由于某种原因，数据不会存储在表中，因此不会被发回到在屏幕上，我只是想知道是否有人能够找到我出错的地方，因为我已经看了一个多小时。非常感谢。
以下是我的代码：
的index.php
<!Doctype html public>
<body>
<table cellpadding="5">
<td>
<h1> Games Club Website</h1>
<form action="process.php" method = "post">
<tr>
<td class="label">
<label for="firstName">
First name
</label>
</td>
<td>
<input type="text"
name="firstName"
id="firstName"
value="<?php
if (isset($validator))
echo $validator->getValue('firstName');
?>"
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('firstName');
?>
</span>
</td>
</tr>
<tr>
<td class="label">
<label for="lastName">
Surname
</label>
</td>
<td>
<input type="text"
name="lastName"
id="lastName"
value="<?php
if (isset($validator))
echo $validator->getValue('lastName');
?>"
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('lastName');
?>
</span>
</td>
</tr>
<tr>
<td class="label">
<label for="email">
Email Address
</label>
</td>
<td>
<input type="text"
name="email"
id="email"
value="<?php
if (isset($validator))
echo $validator->getValue('email');
?>"
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('email');
?>
</span>
</td>
</tr>
<tr>
<td class="label">
<label for="age">
Age
</label>
</td>
<td>
<input type="text"
name="age"
id="age"
value="<?php
if (isset($validator))
echo $validator->getValue('age');
?>"
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('age');
?>
</span>
</td>
</tr>
<tr>
<td class="label">
<label>
Gender
</label>
</td>
<td>
<label for="genderMale">Male</label>
<input type="radio"
name="gender"
id="genderMale"
value="Male"
<?php
if (isset($validator))
echo $validator->isChecked("gender", "Male");
?>
/>
<label for="genderFemale">Female?</label>
<input type="radio"
name="gender"
id="genderFemale"
value="Female"
<?php
if (isset($validator))
echo $validator->isChecked("gender", "Female");
?>
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('gender');
?>
</span>
</td>
</tr>
<tr>
<td class="label">
<label>
What is your preferred gaming platform?
</label>
</td>
<td>
<label for="consoleXbox">Xbox 360</label>
<input type="radio"
name="console"
id="consoleXbox"
value="Xbox 360"
<?php
if (isset($validator))
echo $validator->isChecked("console", "Xbox 360");
?>
/>
<label for="consolePs3">Playstation 3</label>
<input type="radio"
name="console"
id="consolePs3"
value="PS3"
<?php
if (isset($validator))
echo $validator->isChecked("console", "PS3");
?>
<label for="consoleWii">Nintendo Wii</label>
<input type="radio"
name="Console"
id="consoleWii"
value="Wii"
<?php
if (isset($validator))
echo $validator->isChecked("console", "Wii");
?>
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('console');
?>
</span>
</td>
</tr>
<tr>
<td class="label">
<label for="password1">
Enter a password:
</label>
</td>
<td>
<input type="password"
name="p1"
id="p1"
value="<?php
if (isset($validator))
echo $validator->getValue('p1');
?>"
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('p1');
?>
</span>
</td>
</tr>
<tr>
<td class="label">
<label for="p2">
Confirm password:
</label>
</td>
<td>
<input type="password"
name="p2"
id="p2"
value="<?php
if (isset($validator))
echo $validator->getValue('p2');
?>"
/>
<span class="error">
<?php
if (isset($validator))
echo $validator->getError('p2');
?>
</span>
</td>
</tr>
<tr>
<td></td>
<td>
<input type="submit"
name="submitButton"
id="submitButton"
value="Confirm Registration" />
<input type="reset"
name="resetButton"
id="resetButton"
value="Clear Data"
style="margin-right: 20px;" />
</td>
</tr>
</form>
</td>
</table>
</body>
</html>
Process.php
<?php
require_once "FormValidator.php";
$validator = new FormValidator();
if ($validator->validate($_POST)) {
require 'dao.php';
}
else {
require 'index.php';
}
?>
FormValidator.php
<?php
class FormValidator {
private $valid;
private $errors;
private $data;
public function __construct() {
$this->valid = TRUE;
$this->errors = array();
$this->data = NULL;
}
public function validate($data) {
$this->data = $data;
if (empty($data['firstName'])) {
$this->valid = FALSE;
$this->errors['firstName'] = 'A <u>First Name</u> is required<br/>';
}
if (empty($data['lastName'])) {
$this->valid = FALSE;
$this->errors['lastName'] = 'A <u>Surname</u> is required.<br/>';
}
if (empty($data['p1'])) {
$this->valid = FALSE;
$this->errors['p1'] = 'A <u>Password</u> is required.<br/>';
}
if (empty($data['console'])) {
$this->valid = FALSE;
$this->errors['console'] = 'Please choose a <u>Console</u>.<br/>';
}
if (empty($data['p2'])) {
$this->valid = FALSE;
$this->errors['p2'] = 'Please <u>Confirm</u> password.<br/>';
}
if (empty($data['age'])) {
$this->valid = FALSE;
$this->errors['age'] = 'Please enter your <u>Age</u>.<br/>';
}
else if (!$this->isValidIntegerInRange($data['age'], 18, 100)) {
$this->valid = FALSE;
$this->errors['age'] = 'Invalid age. You also need to be at least 18 to sign up.<br/>';
}
if (empty($data['email'])) {
$this->valid = FALSE;
$this->errors['email'] = 'Please enter a valid <u>email address</u>.<br/>';
}
else if (!$this->isValidEmail($data['email'])) {
$this->valid = FALSE;
$this->errors['email'] = 'Incorrect format (name@website.something is required)<br/>';
}
if (empty($data['p2'])) {
$this->valid = FALSE;
$this->errors['p2'] = 'Please <u>Confirm</u> password.<br/>';
}
if (!empty($data['p1'])
&& !empty($data['p2'])
&& $data['p1'] !== $data['p2']) {
$this->valid = FALSE;
$this->errors['p2'] = 'Error, passwords <u>do not match</u> .<br/>';
}
if (empty($data['gender'])) {
$this->valid = FALSE;
$this->errors['gender'] = '<u>Please select a Gender.<u>';
}
return $this->valid;
}
public function getError($key) {
$error = "";
if (isset($this->errors[$key])) {
$error = $this->errors[$key];
}
return $error;
}
public function getValue($key) {
$value = "";
if (isset($this->data[$key])) {
$value = $this->data[$key];
}
return $value;
}
public function isChecked($key, $value) {
$checked = "";
if (isset($this->data[$key]) && $this->data[$key] === $value) {
$checked = ' checked="checked"';
}
return $checked;
}
public function isSelected($key, $value) {
$selected = "";
if (isset($this->data[$key]) && $this->data[$key] === $value) {
$selected = ' selected="selected"';
}
return $selected;
}
private function isValidEmail($email) {
return (filter_var($email, FILTER_VALIDATE_EMAIL) !== FALSE);
}
protected function isValidIntegerInRange($integer, $min, $max) {
$options = array(
'options' => array(
'min_range' => $min,
'max_range' => $max,
)
);
return (filter_var($integer, FILTER_VALIDATE_INT, $options) !== FALSE);
}
}
?>
dao.php
<html>
<body>
<?php
//Make connection to the database
$host = "localhost";
$username = "root";
$password = "";
$database = "my_db";
$dsn = "mysql:host=$host;dbname=$database";
TRY {
$conn = new PDO( $dsn, $username, $password );
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
if (isset($_POST['submit'])) {
$firstName = $_POST['firstName'];
$lastName = $_POST['lastName'];
$email = $_POST['email'];
$age = $_POST['age'];
$gender = $_POST['gender'];
$console = $_POST['console'];
$p1 = $_POST['p1'];
$p2 = $_POST['p2'];
if (isset($_POST['id'])) {
//Updates the record
$id = $_POST['id'];
$sql = "UPDATE userprofile2 SET"
. "firstName=".$conn->quote($fname)
. "lastName=".$conn->quote($lastName)
. "email=".$conn->quote($email)
. "age=".$conn->quote($age)
. "gender=".$conn->quote($gender)
. "console=".$conn->quote($console)
. "p1=".$conn->quote($p1)
. "p2=".$conn->quote($p2)
. "WHERE id = ".$conn->quote($id);
$userprofile2 = $conn->query($sql);
} else {
// Inserts new values into table
$sql = "INSERT INTO userprofile2(firstName, lastName, email, age, gender, console, p1, p2"
. " ) VALUES ("
. $conn->quote($firstName).","
. $conn->quote($lastName).","
. $conn->quote($email).","
. $conn->quote($age).","
. $conn->quote($gender).","
. $conn->quote($console).","
. $conn->quote($p1).","
. $conn->quote($p2) . ")";
$userprofile2 = $conn->query($sql);
}
} elseif (isset($_GET['ID'])) {
// edit mode, allows user to change a selected parameter in the table (Not working)
$userEditDataRows = $conn->query('SELECT * FROM userprofile2 WHERE ID ='.$conn->quote($_GET['ID']));
if (sizeof($userEditDataRows)>0) {
// $row = $userEditDataRows[0];
$firstName = $row['firstName'];
$lastName = $row['lastName'];
$email = $row['email'];
$age = $row['age'];
$gender = $row['gender'];
$console = $row['console'];
$console = $row['p1'];
$console = $row['p2'];
$ID = $_GET['ID'];
}
} else {
//Set the empty values for fields that haven't been filled in
$firstName = '';
$lastName = '';
$email = '';
$age = '';
$gender = '';
$console = '';
$p1 = '';
$p2 = '';
$ID = false;
}
//construct the table
$sql = "SELECT * FROM userprofile2";
$userprofile2 = $conn->query($sql);
$table = '<table>';
$table .= '<tr>';
$table .= '<th> ID </th>
<th> First Name </th>
<th> Last Name </th>
<th> Email Address </th>
<th> Age </th>
<th> Gender </th>
<th> Console </th>
<th> Password </th>
<th> Password (Confirmed) </th>';
$table .= '</tr>';
foreach ($userprofile2 as $userprofile2) {
$table .= ' <tr>';
$table .= ' <td>' . $userprofile2['id'] ." ". '</td>';
$table .= ' <td>' . $userprofile2['firstName'] . '</td>';
$table .= ' <td>' . $userprofile2['lastName'] . '</td>';
$table .= ' <td>' . $userprofile2['email'] . '</td>';
$table .= ' <td>' . $userprofile2['age'] . '</td>';
$table .= ' <td>' . $userprofile2['gender'] . '</td>';
$table .= ' <td>' . $userprofile2['console'] . '</td>';
$table .= ' <td>' . $userprofile2['p1'] . '</td>';
$table .= ' <td>' . $userprofile2['p2'] . '</td>';
$table .= ' </tr> ';
}
$table .= '</table>';
} catch (PDOException $e) {
exit("Connection failed: " . $e->getMessage());
//catches errors and prints them to screen
}
?>
<h2>Thank you <?php echo $_POST["firstName"]; // confirmation of a successful
//entry ?>, your details have been stored!<br /></h2>
<u><h1>Here are the contents of your database:</h1></u>
<?php echo $table ?>
</br>
<a href="index.php">Click Here</a> to go back to the form. </br>
<html>
<body>
答案 0 :(得分：0)
我认为问题是$_POST['id']。它没有在任何地方定义，因此由于以下代码块而无法插入：
if (isset($_POST['id'])) {
请尝试使用$_GET['id']：
if (isset($_GET['id'])) {