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用pdo连接数据库

发布于:2022-02-16 10:59:28  栏目:技术文档

在database.php返回需要的数组

  1. return [
  2. 'type' => $type ?? 'mysql',
  3. 'port' => $port ?? '3306',
  4. 'username' => $username ?? 'root',
  5. 'password' => $password ?? '',
  6. 'dbname' => $dbname ?? 'chloe',
  7. 'host' => $host ?? 'localhost',
  8. 'charset' => $charset ?? 'utf8',
  9. ];

数据库连接

  1. //配置文件引过来
  2. $config = require_once __DIR__ . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'database.php';
  3. extract($config);
  4. $dsn = sprintf('%s:host=%s;port=%s;dbname=%s', $type, $host, $port, $dbname);
  5. try {
  6. $pdo = new PDO($dsn, $username, $password);
  7. var_dump($pdo);
  8. } catch (PDOException $e) {
  9. die($e->getMessage());
  10. }
  11. // 后端可接受前端传过来的参数
  12. $name = isset($_POST['username']) ? $_POST['username'] : null;
  13. $pwd = isset($_POST['password']) ? $_POST['password'] : null;
  14. $pwd = md5($pwd);
  15. // sql模板
  16. $sql = "SELECT `username`,`password` FROM `user` WHERE `username` = ? AND `password` = ? ";
  17. // prepare准备阶段
  18. $stmt = $pdo->prepare($sql);
  19. // 为占位符绑定参数
  20. // $stmt->bindParam(1, $name);
  21. // $stmt->bindParam(2, $pwd);
  22. $res = $stmt->execute([$name, $pwd]);
  23. if ($res) {
  24. $res = $stmt->fetch(PDO::FETCH_ASSOC);
  25. if ($res) {
  26. echo json_encode(['status' => 1, 'msg' => '登录成功']);
  27. }
  28. }
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