Programmatically load configuration from environment

wp-config

<?php
/**
 * The base configuration for WordPress
 *
 * The wp-config.php creation script uses this file during the
 * installation. You don't have to use the web site, you can
 * copy this file to "wp-config.php" and fill in the values.
 *
 * This file contains the following configurations:
 *
 * * MySQL settings
 * * Secret keys
 * * Database table prefix
 * * ABSPATH
 *
 * @link https://codex.wordpress.org/Editing_wp-config.php
 *
 * @package WordPress
 */

 /*
	Read environment variables and parse connection string information
*/
$fName = $_SERVER['APPL_PHYSICAL_PATH']."debug.ini";

// echo "File Path" . $fName;

$connectstr_dbhost = '';
$connectstr_dbname = '';
$connectstr_dbusername = '';
$connectstr_dbpassword = '';
$tbl_prefix = 'wp_dev_';
$debug_env = true;
$ssl = false;

//	echo var_dump(file_exists($fName));

if(file_exists($fName))
{
    $config = parse_ini_file($fName);
    // echo $config;
    $connectstr_dbhost = $config["dbhost"];
    // echo $connectstr_dbhost;
    $connectstr_dbname = $config["dbname"];
    // echo $connectstr_dbname;
    $connectstr_dbusername = $config["dbuser"];
    // echo $connectstr_dbusername;
    $connectstr_dbpassword = $config["dbpassword"];
    // echo $connectstr_dbpassword;

} else {
    foreach ($_SERVER as $key => $value) {
        if (strpos($key, "MYSQLCONNSTR_defaultConnection") !== 0) {
            continue;
        }
        
        $connectstr_dbhost = preg_replace("/^.*Data Source=(.+?);.*$/", "\\1", $value);
        $connectstr_dbname = preg_replace("/^.*Database=(.+?);.*$/", "\\1", $value);
        $connectstr_dbusername = preg_replace("/^.*User Id=(.+?);.*$/", "\\1", $value);
        $connectstr_dbpassword = preg_replace("/^.*Password=(.+?)$/", "\\1", $value);

        $tbl_prefix = getenv('TablePrefix');
        $debug_env = false;
        $ssl = true;
    }
}

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', $connectstr_dbname);

/** MySQL database username */
define('DB_USER', $connectstr_dbusername);

/** MySQL database password */
define('DB_PASSWORD', $connectstr_dbpassword);

/** MySQL hostname : this contains the port number in this format host:port . Port is not 3306 when using this feature*/
define('DB_HOST', $connectstr_dbhost);

/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8');

/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', '');

define('DB_SSL', $ssl);

/**#@+
 * Authentication Unique Keys and Salts.
 *
 * Change these to different unique phrases!
 * You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service}
 * You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
define('AUTH_KEY',         'put your unique phrase here');
define('SECURE_AUTH_KEY',  'put your unique phrase here');
define('LOGGED_IN_KEY',    'put your unique phrase here');
define('NONCE_KEY',        'put your unique phrase here');
define('AUTH_SALT',        'put your unique phrase here');
define('SECURE_AUTH_SALT', 'put your unique phrase here');
define('LOGGED_IN_SALT',   'put your unique phrase here');
define('NONCE_SALT',       'put your unique phrase here');

/**#@-*/

/**
 * WordPress Database Table prefix.
 *
 * You can have multiple installations in one database if you give each
 * a unique prefix. Only numbers, letters, and underscores please!
 */
$table_prefix  = $tbl_prefix;

/**
 * For developers: WordPress debugging mode.
 *
 * Change this to true to enable the display of notices during development.
 * It is strongly recommended that plugin and theme developers use WP_DEBUG
 * in their development environments.
 *
 * For information on other constants that can be used for debugging,
 * visit the Codex.
 *
 * @link https://codex.wordpress.org/Debugging_in_WordPress
 */
define('WP_DEBUG', $debug_env);

/* That's all, stop editing! Happy blogging. */

/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
	define('ABSPATH', dirname(__FILE__) . '/');

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');