<?php
	$sql = "UPDATE students SET first_name = {$read_first_name} last_name = {$read_last_name }
	group = {$read_group} first_exam = {$read_1_exam} second_exam = {$read_2_exam}
	third_exam = {$read_3_exam};";
	$statment = $this->db->prepare($sql);
	$statment = $statement->execute();
?>