How to open DB connection in Openshift? [closed]

Answer 1

define('DB_HOST', getenv('OPENSHIFT_MYSQL_DB_HOST'));
define('DB_PORT', getenv('OPENSHIFT_MYSQL_DB_PORT'));
define('DB_USER', getenv('OPENSHIFT_MYSQL_DB_USERNAME'));
define('DB_PASS', getenv('OPENSHIFT_MYSQL_DB_PASSWORD'));
define('DB_NAME', getenv('OPENSHIFT_APP_NAME'));

$mysqlCon = mysqli_connect(DB_HOST, DB_USER, DB_PASS, "", DB_PORT) or die("Error: " . mysqli_error($mysqlCon));
mysqli_select_db($mysqlCon, DB_NAME) or die("Error: " . mysqli_error($mysqlCon));

Or better still, just use the environment variables in your connection string:

$mysqlCon = mysqli_connect(getenv('OPENSHIFT_MYSQL_DB_HOST'), getenv('OPENSHIFT_MYSQL_DB_USERNAME'), getenv('OPENSHIFT_MYSQL_DB_PASSWORD'), "", getenv('OPENSHIFT_MYSQL_DB_PORT')) or die("Error: " . mysqli_error($mysqlCon));
mysqli_select_db($mysqlCon, getenv('OPENSHIFT_APP_NAME')) or die("Error: " . mysqli_error($mysqlCon));

Answer 2

I've made it to work by doing this.

Global Use

define('DB_HOST', getenv('OPENSHIFT_MYSQL_DB_HOST'));
define('DB_PORT', getenv('OPENSHIFT_MYSQL_DB_PORT'));
define('DB_USER', getenv('OPENSHIFT_MYSQL_DB_USERNAME'));
define('DB_PASS', getenv('OPENSHIFT_MYSQL_DB_PASSWORD'));
define('DB_NAME', getenv('OPENSHIFT_GEAR_NAME'));

$dbhost = constant("DB_HOST"); // Host name 
$dbport = constant("DB_PORT"); // Host port
$dbusername = constant("DB_USER"); // MySQL username 
$dbpassword = constant("DB_PASS"); // MySQL password 
$db_name = constant("DB_NAME"); // Database name 

Alternatively

$dbhost = getenv('OPENSHIFT_MYSQL_DB_HOST'); // Host name 
$dbport = getenv('OPENSHIFT_MYSQL_DB_PORT'); // Host port
$dbusername = getenv('OPENSHIFT_MYSQL_DB_USERNAME'); // MySQL username 
$dbpassword = getenv('OPENSHIFT_MYSQL_DB_PASSWORD'); // MySQL password 
$db_name = getenv('OPENSHIFT_GEAR_NAME'); // Database name