A database 'switch' in your wp-config.php

fpl_database_config.php

<?php

if ( stristr( $_SERVER['SERVER_NAME'], 'development' ) ) {

	// ** MySQL settings DEVELOPMENT ** //
	define( 'DB_NAME', 'projectname_dev' );		// The name of the database
	define( 'DB_USER', 'projectname_dev_user' );	// Your MySQL username
	define( 'DB_PASSWORD', '12345' );		// ...and a password an idiot would have on his luggage
	define( 'DB_HOST', 'localhost' );		// 99% chance you won't need to change this value
	
	define( 'WP_HOME', 'http://projectname.development.companyname.com' ); // home url
	define( 'WP_SITEURL', WP_HOME ); // site url	
	
	define( 'WP_DEBUG', true );	// Debugging is always set to true on development!!!
	define( 'WP_CACHE', false );	// You don't want caching while you are developing
	 
} elseif ( stristr( $_SERVER['SERVER_NAME'], 'testing' ) ) {

	// ** MySQL settings TESTING ** //
	define( 'DB_NAME', 'projectname_tst' );		// The name of the database
	define( 'DB_USER', 'projectname_tst_user' );	// Your MySQL username
	define( 'DB_PASSWORD', '12345' );		// ...and a password an idiot would have on his luggage
	define( 'DB_HOST', 'localhost' );		// 99% chance you won't need to change this value
	
	define( 'WP_HOME', 'http://projectname.testing.companyname.com' ); // home url
	define( 'WP_SITEURL', WP_HOME ); // site url		
	
	define( 'WP_DEBUG', true );	//Use the setting you want over here, could be true or false				
	define( 'WP_CACHE', false );	//Use the setting you want over here, could be true or false		
	
} elseif ( stristr( $_SERVER['SERVER_NAME'], 'acceptance' ) ) {

	// ** MySQL settings ACCEPTANCE ** //
	define( 'DB_NAME', 'projectname_acc' );		// The name of the database
	define( 'DB_USER', 'projectname_acc_user' );	// Your MySQL username
	define( 'DB_PASSWORD', '12345' );		// ...and a password an idiot would have on his luggage
	define( 'DB_HOST', 'localhost' );		// 99% chance you won't need to change this value
	
	define( 'WP_HOME', 'http://projectname.acceptance.companyname.com' ); // home url
	define( 'WP_SITEURL', WP_HOME ); // site url	
	
	define( 'WP_DEBUG', false );	//keep these settings identical to the production settings
	define( 'WP_CACHE', true );	//keep these settings identical to the production settings
	 
} else {

	// ** MySQL settings PRODUCTION ** //
	define( 'DB_NAME', 'projectname_prod' );	// The name of the database
	define( 'DB_USER', 'projectname_prod_user' );	// Your MySQL username
	define( 'DB_PASSWORD', '12345' );		// ...and a password an idiot would have on his luggage
	define( 'DB_HOST', 'localhost' );		// 99% chance you won't need to change this value
	
	define( 'WP_HOME', 'http://projectname.com' ); // home url
	define( 'WP_SITEURL', WP_HOME ); // site url	
	
	define( 'WP_DEBUG', false );	//Debugging is always off on production sites				
	define( 'WP_CACHE', true );	//We want to cache our production site
		
}

define('DB_CHARSET', 'utf8');
define('DB_COLLATE', '');