SQLSTATE[HY000] [2002]
PHP Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] (下面是一段乱码)
xampp集成开发环境,php7.0,源码是见下面
$pdo = new PDO( "mysql:host=rm-2zeoh451gl8on141a.mysql.rds.aliyuncs.com;dbname=mtsports;charset=utf8mb4",
"mtroot",
"mtroot");
$sql = 'select * from core_dev';
$pdoS = $pdo->query($sql);
$pdoS->execute();
$arr = $pdoS->fetchAll(PDO::FETCH_ASSOC);