php - PDO连接错误: php_network_getaddresses: getaddrinfo failed

Question

我正在尝试在本地计算机上运行我的项目，但它带来了以下错误:

Warning: PDO::__construct() [pdo.--construct]: php_network_getaddresses: getaddrinfo failed: The requested name is valid, but no data of the requested type was found. in C:\Program Files (x86)\EasyPHP-5.3.9\www\class\user.php on line 21

我已经定义了连接:

define( "DB_DSN", "mysql:host=localhost;dbname=codecalltut" );
    define( "DB_USERNAME", "root" );
    define( "DB_PASSWORD", "" );
    define( "CLS_PATH", "class" );

user.php中的第21行是:

$con = new PDO( DB_DSN, DB_USERNAME, DB_PASSWORD ); 

出了什么问题？你愿意帮助我吗？

Answer 1

尝试

define( "DB_DSN", "mysql:host=127.0.0.1;dbname=codecalltut" );

而不是

define( "DB_DSN", "mysql:host=localhost;dbname=codecalltut" );