core-bundle/src/Resources/contao/library/Contao/Database/Result.php
public function prev()
	{
		if ($this->intIndex < 1)
		{
			return false;
		}

		$this->blnDone = false;
		$this->arrCache = $this->resultSet[--$this->intIndex];

		return $this;
	}
public function prev()
	{
		if ($this->intIndex < 1)
		{
			return false;
		}

		$this->blnDone = false;
		$this->arrCache = $this->resultSet[--$this->intIndex];

		return $this;
	}
Go to the previous row of the current result

@return Result|boolean The result object or false if there is no previous row