Environment switch for wp-config when working with multiple environments

wp-config.php

// ** MySQL settings ** //

// define environments
$environments = array(
	'local-joeyyax' => array(
		'address' => array( 'domain.dev', 'www.domain.dev' ),
		'db' => array(
			'name' => '',
			'user' => 'root',
			'password' => 'root',
			'host' => 'localhost',
			'charset' => 'utf8',
			'collate' => ''
		),
		'ssl' => false,
		'dev' => true
	),
	'staging' => array(
		'address' => array( 'staging.domain.com' ),
		'db' => array(
			'name' => '',
			'user' => '',
			'password' => '',
			'host' => 'localhost',
			'charset' => 'utf8',
			'collate' => ''
		),
		'ssl' => false,
		'dev' => false
	),
	'production' => array(
		'address' => array( 'domain.com', 'www.domain.com' ),
		'db' => array(
			'name' => '',
			'user' => '',
			'password' => '',
			'host' => '',
			'charset' => 'utf8',
			'collate' => ''
		),
		'ssl' => false,
		'dev' => false
	)
);

// allows wildcards in the array to be searched
function better_in_array( $needle, $haystack ) {
	foreach ($haystack as $value) {
		if ( fnmatch( $value, $needle ) === true ) {
			return true;
		}
 	}
	return false;
}

// loop through environments to get proper db credentials
foreach( $environments as $key => $env ) {


	if ( better_in_array( $_SERVER['SERVER_NAME'] , $env['address'] ) ) {
		
		// if we find a matching environment, apply db credentials
		define( 'DB_NAME', 	$env['db']['name']	);
		define( 'DB_USER', 	$env['db']['user']	);
		define( 'DB_PASSWORD', 	$env['db']['password']	);
		define( 'DB_HOST', 	$env['db']['host']	);
		define( 'DB_CHARSET', 	$env['db']['charset']	);
		define( 'DB_COLLATE', 	$env['db']['collate']	);
		
		if ( $env['ssl'] == true ) {
			define( 'FORCE_SSL_ADMIN', true );
		}

		if ( $env['dev'] == true ) {
			define( 'WP_DEBUG', true );  // Turn debugging ON
			define( 'WP_DEBUG_DISPLAY', false ); // Turn forced display OFF
			define( 'WP_DEBUG_LOG', true );  // Turn logging to wp-content/debug.log ON
		}

		$environment = $key;

		break; // break foreach if we find a match
	}
}

// make sure all db constants are set.
if ( !defined( 'DB_NAME' ) || !defined( 'DB_USER' ) || !defined( 'DB_PASSWORD' ) || !defined( 'DB_HOST' ) || !defined( 'DB_CHARSET' ) || !defined( 'DB_COLLATE' ) ) {
	echo 'Environment not configured.';
	exit;
}