gistfile1.php

	function is_write_type($sql)
	{
                if (( ! preg_match('/^\s*"?(SET|INSERT|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD DATA|COPY|ALTER|GRANT|REVOKE|LOCK|UNLOCK)\s+/i', $sql)) 
                    AND
                    ( ! preg_match('/^\s*INSERT.*RETURNING\s+[\w\*,]+$/i', $sql))
                    )
		{
			return FALSE;
		}
		return TRUE;
	}