我无法实现到 mysql db 的 PDO 连接

Question

I keep receiving "SQLSTATE[HY000] [2002] Connection refused" when trying to connect from a php script.

I can connect to mysql with: /Applications/MAMP/Library/bin/mysql --host=localhost -uroot -proot

setup is: Mamp Pro version: 5.5.1 PHP version: 7.3.8 MySql version: 5.7.26 Check Health reports: MySQL is running and accepting connections. Connections are not using encryption.

This is the script:

<?php
$dsn = "mysql:host=127.0.0.1;dbname=myDatabase;charset=utf8mb4";
try {
  $pdo = new PDO($dsn, "root", "root");
} catch (Exception $e) {
  error_log($e->getMessage());
  exit('Something weird happened'); //something a user can understand
}

If I use localhost instead of 127.0.0.1 in $dsn I get: SQLSTATE[HY000] [2002] No such file or directory

Any thoughts would be greatly appreciated.

Answer 1

I think your database name is wrong.

So try to enter in mysql command use myDatabase; . Also check the grants for user root for that database. you should als check for system and php errors