public function rollback()
	{
		if($this->hasBackup)
		{
			$this->params = $this->backup;

		} else
		{
			throw new Exceptions\NoValidBackup($this->params);
		}	
	}
public function rollback()
	{
		if($this->hasBackup)
		{
			$this->params = $this->backup;

		} else
		{
			throw new Exceptions\NoValidBackup($this->params);
		}	
	}
public function rollback ( ) { if ( $ this -> hasBackup ) { $ this -> params = $ this -> backup ; } else { throw new Exceptions \ NoValidBackup ( $ this -> params ) ; } }
Uses the backup array to revert the params array

@return void
@author Dan Cox

@throws Exceptions\NoValidBackup
Uses the backup array to revert the params array