点击提交付款后出现错误: fatal error :在第 37 行 C:\xampp\htdocs\paypage\lib\pdo_db.php 中对 null 调用成员函数prepare()。请提供帮助吗？
收费.php
<?php
require_once('vendor/autoload.php');
require_once('config/db.php');
require_once('lib/pdo_db.php');
require_once('models/Customer.php');
require_once('models/Transaction.php');
\Stripe\Stripe::setApiKey('sk_test_z2O6k7kNKzsBXFvLgcpx4FZq');
// Sanitize POST Array
$POST = filter_var_array($_POST, FILTER_SANITIZE_STRING);
$first_name = $POST['first_name'];
$last_name = $POST['last_name'];
$email = $POST['email'];
$token = $POST['stripeToken'];
// Create Customer In Stripe
$customer = \Stripe\Customer::create(array(
"email" => $email,
"source" => $token
));
// Charge Customer
$charge = \Stripe\Charge::create(array(
"amount" => 5000,
"currency" => "usd",
"description" => "Intro to React Course",
"customer" => $customer->id
));
// Customer Data
$customerData = [
'id' => $charge->customer,
'first_name' => $first_name,
'last_name' => $last_name,
'email' => $email
];
// Instantiate Customer
$customer = new Customer();
// Add Customer To DB
$customer->addCustomer($customerData);
// Transaction Data
$transactionData = [
'id' => $charge->id,
'customer_id' => $charge->customer,
'product' => $charge->description,
'amount' => $charge->amount,
'currency' => $charge->currency,
'status' => $charge->status,
];
// Instantiate Customer
$transaction = new Transaction();
// Add Customer To DB
$transaction->addTransaction($transactionData);
// Redirect to success
header('Location: success.php?tid='.$charge->id.'&product='.$charge->description);
?>
客户.php
<?php
require_once('config/db.php');
require_once('lib/pdo_db.php');
require_once('models/Customer.php');
// Instantiate Customer
$customer = new Customer();
// Get Customer
$customers = $customer->getCustomers();
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
<title>View Customers</title>
</head>
<body>
<div class="container mt-4">
<div class="btn-group" role="group">
<a href="customers.php" class="btn btn-primary">Customers</a>
<a href="transactions.php" class="btn btn-secondary">Transactions</a>
</div>
<hr>
<h2>Customers</h2>
<table class="table table-stripped">
<thead>
<tr>
<th>Customer ID</th>
<th>Name</th>
<th>Email</th>
<th>Date</th>
</tr>
</thead>
<tbody>
<?php foreach($customers as $c): ?>
<td><?php echo $c->id; ?></td>
<td><?php echo $c->first_name; ?> <?php echo $c->last_name; ?></td>
<td><?php echo $c->email; ?></td>
<td><?php echo $c->created_at; ?></td>
<?php endforeach; ?>
</tbody>
</table>
<br>
<p><a href="index.php">Pay Page</a></p>
</div>
</body>
</html>
交易.php
<?php
require_once('config/db.php');
require_once('lib/pdo_db.php');
require_once('models/Transaction.php');
// Instantiate Transaction
$transaction = new Transaction();
// Get Transaction
$transactions = $transaction->getTransactions();
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
<title>View Transactions</title>
</head>
<body>
<div class="container mt-4">
<div class="btn-group" role="group">
<a href="customers.php" class="btn btn-secondary">Customers</a>
<a href="transactions.php" class="btn btn-primary">Transactions</a>
</div>
<hr>
<h2>Transactions</h2>
<table class="table table-stripped">
<thead>
<tr>
<th>Transaction ID</th>
<th>Customer</th>
<th>Product</th>
<th>Amount</th>
<th>Date</th>
</tr>
</thead>
<tbody>
<?php foreach($transactions as $t): ?>
<tr>
<td><?php echo $t->id; ?></td>
<td><?php echo $t->customer_id; ?></td>
<td><?php echo $t->product; ?></td>
<td><?php echo sprintf('%.2f', $t->amount / 100); ?><?php echo strtoupper($t->currency); ?></td>
<td><?php echo $t->created_at; ?></td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
<br>
<p><a href="index.php">Pay Page</a></p>
</div>
</body>
</html>
在客户和交易的模型文件夹内
客户.php
<?php
class Customer {
private $db;
public function __construct() {
$this->db = new Database;
}
public function addCustomer($data) {
// Prepare Query
$this->db->query('INSERT INTO customers (id, first_name, last_name, email) VALUES(:id, :first_name, :last_name, :email)');
// Bind Values
$this->db->bind(':id', $data['id']);
$this->db->bind(':first_name', $data['first_name']);
$this->db->bind(':last_name', $data['last_name']);
$this->db->bind(':email', $data['email']);
// Execute
if($this->db->execute()) {
return true;
} else {
return false;
}
}
public function getCustomers() {
$this->db->query('SELECT * FROM customers ORDER BY created_at DESC');
$results = $this->db->resultset();
return $results;
}
}
交易.php
<?php
class Transaction {
private $db;
public function __construct() {
$this->db = new Database;
}
public function addTransaction($data) {
// Prepare Query
$this->db->query('INSERT INTO transactions (id, customer_id, product, amount, currency, status) VALUES(:id, :customer_id, :product, :amount, :currency, :status)');
// Bind Values
$this->db->bind(':id', $data['id']);
$this->db->bind(':customer_id', $data['customer_id']);
$this->db->bind(':product', $data['product']);
$this->db->bind(':amount', $data['amount']);
$this->db->bind(':currency', $data['currency']);
$this->db->bind(':status', $data['status']);
// Execute
if($this->db->execute()) {
return true;
} else {
return false;
}
}
public function getTransactions() {
$this->db->query('SELECT * FROM transactions ORDER BY created_at DESC');
$results = $this->db->resultset();
return $results;
}
}
pdo_db.php
<?php
/*
* PDO DATABASE CLASS
* Connects Database Using PDO
* Creates Prepeared Statements
* Binds params to values
* Returns rows and results
*/
class Database {
private $host = DB_HOST;
private $user = DB_USER;
private $pass = DB_PASS;
private $dbname = DB_NAME;
private $dbh;
private $error;
private $stmt;
public function __construct() {
// Set DSN
$dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
$options = array (
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
// Create a new PDO instanace
try {
$this->dbh = new PDO ($dsn, $this->user, $this->pass, $options);
} // Catch any errors
catch ( PDOException $e ) {
$this->error = $e->getMessage();
}
}
// Prepare statement with query
public function query($query) {
$this->stmt = $this->dbh->prepare($query);
}
// Bind values
public function bind($param, $value, $type = null) {
if (is_null ($type)) {
switch (true) {
case is_int ($value) :
$type = PDO::PARAM_INT;
break;
case is_bool ($value) :
$type = PDO::PARAM_BOOL;
break;
case is_null ($value) :
$type = PDO::PARAM_NULL;
break;
default :
$type = PDO::PARAM_STR;
}
}
$this->stmt->bindValue($param, $value, $type);
}
// Execute the prepared statement
public function execute(){
return $this->stmt->execute();
}
// Get result set as array of objects
public function resultset(){
$this->execute();
return $this->stmt->fetchAll(PDO::FETCH_OBJ);
}
// Get single record as object
public function single(){
$this->execute();
return $this->stmt->fetch(PDO::FETCH_OBJ);
}
// Get record row count
public function rowCount(){
return $this->stmt->rowCount();
}
// Returns the last inserted ID
public function lastInsertId(){
return $this->dbh->lastInsertId();
}
}
我想提醒大家，这是我在 youtube 上关注的第一个 php 项目，之前没有 PHP 或 MySql 经验。您在这里看到的所有内容都托管在 XAMPP 上。
最佳答案
您是否已验证您的 MySQL 实例是否在 XAMPP 中运行？
关于php - 当我尝试提交我在 YouTube 上关注的此应用程序的信用卡付款信息时，我不断收到 fatal error ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49911267/