gistfile1.php

<?php
abstract class MigrationScaffold{
	
	private static $link;

	/**
	* Creates the connection to the proper database
	*
	* @param $env - ['dev' || 'prod' || 'test']
	* @return void
	*/
	public function __construct($env = 'test'){
	  	if( $env == 'dev' ){ self::$link = mysqli_connect('localhost', 'root', 'root', 'development');}
	  	else if( $env == 'test' ){ self::$link = mysqli_connect('localhost', 'root', 'root', 'testing');}
	  	else if( $env == 'prod' ){ self::$link = mysqli_connect('localhost', 'root', 'root', 'production'); }
		if ( !self::$link ) {
			die( 'We had some trouble connecting to the database : ' . mysqli_error(self::$link) );
		}
	}//end:__construct();

	/**
	* This runs the actual migration and takes care of error reporting
	*
	*/
	protected function run($sql){
		mysqli_query(self::$link, $sql);
		if(mysqli_error(self::$link)){
			echo mysqli_error(self::$link);
		}
	}//end:run()

	abstract protected function up();
	abstract protected function down();
}
?>