Question

示例测试查询代码中出现错误。但是在运行时，我遇到以下错误

（！）致命错误：未捕获的错误：在行

的D：\ dev \ workspace \ web \ StartUp1 \ index.php中找不到类'Db'

我正在使用wampserver和php ver：7.2.10

index.php文件中的代码：

<html>
<body>
<?php
require_once ('db.php');
require_once ('common.php');
require_once ('config.php');
$db= new Db();
$records = $db->query("SELECT * FROM x_note LEFT OUTER JOIN x_user ON 
x_note.user_id=x_user.user_id");
dump($records);
?>
</body>
</html>

和DB.php文件：

<?
class Db {
private $connection;
public function __construct($option = null){
if ($option != null){
  $host = $option['host'];
  $user = $option['user'];
  $pass = $option['pass'];
  $name = $option['name'];
 } else {
  global $config;
  $host = $config['db']['host'];
  $user = $config['db']['user'];
  $pass = $config['db']['pass'];
  $name = $config['db']['name'];
 }

 $this->connection = new mysqli($host, $user, $pass, $name);
 if ($this->connection->connect_error) {
  echo "Connection failed: " . $this->connection->connect_error;
  exit;
 }

 $this->connection->query("SET NAMES 'utf8'");
 }

 public function first($sql){
 $records = $this->query($sql);
 if ($records == null){
  return null;
 }

 return $records[0];
 }

 public function insert($sql){
 $id = $this->connection->query($sql);
 return $id;
 }

 public function query($sql){
 $result = $this->connection->query($sql);
 $records = array();

 if ($result->num_rows == 0) {
   return null;
 }

  while($row = $result->fetch_assoc()) {
  $records[] = $row;
  }

  return $records;
  }

  public function connection(){
  return $this->connection;
 }

 public function close(){
 $this->connection->close();
}
}

数据库已建立并填充了信息

致命错误：未捕获的错误：在PHP7中找不到类'Db'

0 个答案: