PHP MySQL 5.5 db connection in Openshift [closed]

Question

I'm very new to openshift and these git, ssh programming. I developed this much so far. Installed PHP 5.3, MySQL 5.5, phpMyAdmin 4.0 Cartridges

This is my dbcon file in php. Basically i need to connect my php application with openshift mysql db. Here's what i did.

<?php

// Database Connection Setting

$dbhost = "127.0.0.1"; // Host name 
$dbport = "3308"; // Host port
$dbusername = "user"; // Mysql username 
$dbpassword = "pass"; // Mysql password 
$db_name = "mf"; // Database name 

$mysqlCon = mysqli_connect($dbhost, $dbusername, $dbpassword, "", $dbport) or die("Error: " . mysqli_error($mysqlCon));
mysqli_select_db($mysqlCon, $db_name) or die("Error: " . mysqli_error($mysqlCon));
?>

This gives me an error on openshift but works for other php apps. I get nothing on error explanation only as Error: { ...blank space... }.

can you help me out guys?

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

Thanks alot for your efforts guys. No visual error thrown before. but 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