IBM Bluemix PostgreSQL and psql [closed] - php

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I've created a PHP runtime enviroment in Bluemix and attached a postgresql server to it.
When trying to use psql from terminal, it doesn't seem to can reach the database?
Also, adding ./bp-config/options.json and:
{
"PHP_EXTENSIONS": ["mysqli"]
}
I'm not able to conncet via mysqli from my php scripts.

Answer 1

The extension mysqli for PHP is useful to connect to a MySQL database server.
As you described you bound to your application a PostgreSQL database, so this extension is completely useless.
To connect to a PostgreSQL you could use composer dependency manager (supported on Bluemix) with you PHP application and set your composer.json with the dependency. You can obviously add other dependencies to your composer.json.
"require": {
"ext-pgsql": "*"
}
Then you could connect to your PostgreSQL service using a code like the following one in order to get service credentials from VCAP_SERVICES variables available from CloudFoundry
if (getenv("VCAP_SERVICES")===false) {
$db = 'XXXX';
define("APP_DB_SCHEMA", $db);
define("APP_DB_HOST", 'xxxx');
define("APP_DB_PORT", "xxxx");
define("APP_DB_USERNAME", 'xxxx');
define("APP_DB_PASSWORD", "xxxx");
} else {
// getting VCAP configuration
$services = getenv("VCAP_SERVICES");
$services_json = json_decode($services, true);
$pgsql_config = $services_json["postgresql-9.1"][0]["credentials"];
define("APP_DB_SCHEMA", $pgsql_config["name"]);
define("APP_DB_HOST", $pgsql_config["host"]);
define("APP_DB_PORT", $pgsql_config["port"]);
define("APP_DB_USERNAME", $pgsql_config["user"]);
define("APP_DB_PASSWORD", $pgsql_config["password"]);
}
and then establish the DB connection through:
$dbConnectionString = "host=" . APP_DB_HOST . " port=" . APP_DB_PORT . " dbname=" . APP_DB_SCHEMA . " user=" . APP_DB_USERNAME . " password=" . APP_DB_PASSWORD;
$dbConnection = pg_connect($dbConnectionString);