40 lines
986 B
PHP
40 lines
986 B
PHP
<?php
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namespace App\Config;
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use PDO;
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use PDOException;
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class Database
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{
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private static ?PDO $instance = null;
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private function __construct()
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{
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$configPath = dirname(__DIR__, 2) . '/config/db-config.json';
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if (!file_exists($configPath)) {
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throw new PDOException('数据库配置文件不存在');
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}
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$config = json_decode(file_get_contents($configPath), true);
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$dsn = "mysql:host={$config['host']};port={$config['port']};dbname={$config['dbname']};charset=utf8mb4";
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self::$instance = new PDO($dsn, $config['user'], $config['password'], [
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8mb4",
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]);
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}
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public static function getInstance(): PDO
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{
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if (self::$instance === null) {
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new self();
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}
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return self::$instance;
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}
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}
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