以下是一些实例1700PHP的实战编程技巧与代码示例，通过表格形式呈现，方便读者查阅和学习。

| 序号 | 技巧名称 | 代码示例 |

| ---- | ----------------- | ---------------------------------------------------------------- |

| 1 | 数据库连接 | 

class DB {
    private $host = 'localhost';
    private $username = 'root';
    private $password = '';
    private $database = 'test';
    
    public function __construct() {
        $this->connect();
    }
    
    private function connect() {
        $this->conn = new mysqli($this->host, $this->username, $this->password, $this->database);
        if ($this->conn->connect_error) {
            die("