44 lines
1.1 KiB
PHP
44 lines
1.1 KiB
PHP
<?php
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namespace Core;
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/**
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* 数据库连接（MySQL PDO 单例；文件路径模式）
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*/
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class Db
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{
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private static $pdo = null;
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public static function driver(): string
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{
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return App::config('app.driver', 'file');
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}
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public static function pdo(): \PDO
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{
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if (self::$pdo === null) {
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$c = App::config('db.mysql');
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$dsn = "mysql:host={$c['host']};port={$c['port']};dbname={$c['dbname']};charset={$c['charset']}";
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self::$pdo = new \PDO($dsn, $c['user'], $c['pass'], [
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\PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION,
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\PDO::ATTR_DEFAULT_FETCH_MODE => \PDO::FETCH_ASSOC,
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\PDO::ATTR_EMULATE_PREPARES => false,
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]);
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}
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return self::$pdo;
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}
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public static function fileDir(): string
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{
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$dir = App::config('db.file.dir');
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if (!is_dir($dir)) mkdir($dir, 0755, true);
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return $dir;
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}
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public static function query(string $sql, array $params = []): \PDOStatement
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{
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$st = self::pdo()->prepare($sql);
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$st->execute($params);
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return $st;
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}
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}
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