使用php中的get函数从mysql获取结果

i am new to php and i am trying to write a function which will get all the results from the reviews mysql table. I have posted what i have tried but its saying i have a problem on line 101 which is the "$sql = 'SELECT * FROM reviews WHERE id = "'.$review_id.'";'" and i cant see what the problem is can someone help please. im using apigee to test the api

/*reviews*/
function reviews_get() {
    $this->load->database();
    $sql = 'SELECT * FROM reviews;';
    $query = $this->db->query($sql);
    $data = $query->result();

    $this->response($data, 200);
}

function review_get($review_id) {
    $this->load->database();
    $sql = 'SELECT * FROM reviews WHERE id = "'.$review_id.'";';
    $query = $this->db->query($sql);
    $data = $query->row();

    $this->response($data, 200);
}

Please remove the ";" from the end of the query string and your problem will be solved

Your SQL statement is wrong . It should be

$sql = "SELECT * FROM reviews WHERE id = ".$review_id;