SQLSTATE[HY000] [2002] Operation timed out

Question

I am creating a pdo data connection. The connections works fine on localhost. But when I connect to my remote db, and use exactly the same credentials which I have used before, I get a empty page, no error messages, just a empty page.

The same credentials that are working on a previous project were done with mysqli, this one is done with pdo.

I have tried two types of pdo connection code, none of them are working.

First one:

$databaseHost = 'x.xxx.xxx.xx';
$databaseName = 'xxxxxxxxx';
$databaseUsername = 'xxxxxxx';
$databasePassword = 'xxxxxx';
$charset = 'utf8';

try {

    $dsn = "mysql:host=$databaseHost;dbname=$databaseName;charset=$charset";


} catch(PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}

$opt = [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    PDO::ATTR_EMULATE_PREPARES => false,
        ];

$pdo = new PDO($dsn, $databaseUsername, $databasePassword, $opt);

Second one:

$databaseHost = 'x.xxx.xxx.xx';
$databaseName = 'xxxxxxxxx';
$databaseUsername = 'xxxxxxx';
$databasePassword = 'xxxxxx';

$opt = [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    PDO::ATTR_EMULATE_PREPARES => false,
        ];

try {

    $pdo = new PDO("mysql:host={$databaseHost};dbname={$databaseName}", $databaseUsername, $databasePassword, $opt);

    } catch(PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
  }

Even though both connections work in localhost, I tried to just load this connection page locally in the browser, the fist option gave me this error:

Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Operation timed out in /Applications/MAMP/htdocs/ijdb_pdo/config.php:24 Stack trace: #0 /Applications/MAMP/htdocs/ijdb_pdo/config.php(24): PDO->__construct('mysql:host=83.1...', 'u1164707_sohail', 'sohail123', Array) #1 {main} thrown in /Applications/MAMP/htdocs/ijdb_pdo/config.php on line 24

and the second option gave me the following error:

againtestConnection failed: SQLSTATE[HY000] [2002] Operation timed out

What am i messing up in my code?

I tried then to connect through the terminal with:

MacBook-Pro-3:/ sohail$ /Applications/MAMP/Library/bin/mysql -h "xx.xxx.xxx.xx" -u "xxxxxx" "-pxxxxxxx" "xxxxxxx";

and got the following error:

Warning: Using a password on the command line interface can be insecure. ERROR 2003 (HY000): Can't connect to MySQL server on 'xx.xxx.xxx.xx' (60) MacBook-Pro-3:/ sohail$

I don't think I have terminal access on my remote machine, so I can't do SHOW GLOBAL VARIABLES LIKE 'PORT'; cmd -thanks

Answer 1

For your second error, with reference to these two answers.

PDOException SQLSTATE[HY000] [2002] Connection timed out on my local computer

'PDOExcpetion' with message 'SQLSTATE[HY000] [2002] No route to host

Either you need to enable the access to remote database or you have network IP issue which changes time to time. Please verify both things. I hope this will help you.

Answer 2

就我而言，不知何故数据库连接凭据已更改。

Answer 3

I had this issue with a Laravel App in Vagrant. I cleared the config cache and then it worked fine.

php artisan config:cache