MySQL插入语句执行多次并一次插入多个记录

Question

I have a newly configured Server.

I am trying simple insert statement in MYSQL.

My code is like below

 $stmt=mysqli_prepare($this->db->initCon(),
 "INSERT INTO user_exam_taken
 (user_exam_id, completed, last_question_id, mode, question_ids, time_elapsed, score) 
 VALUES ('".$request->user_exam_id."', '".$request->completed."', 
 '".$request->last_question_id."', '".$request->mode."', '".$request->question_ids."',
 '".$request->time_elapsed."', '".$request->score."');");  
 // This is the entire insert and its not in a loop
 mysqli_stmt_execute($stmt);

After executing above insert statement If i look into the table, multiple rows are inserted. But the script is run only once.

I verify i also put a field in that table with type timestamp ( CURRENT_TIMESTAMP ) which will show the current timestamp value and here this is same for multiple records after that insert statement executed.

Updated:

Find below for the entire function

function addExamResults(Exam_ResultVO $request)
        {
            $stmt=mysqli_prepare($this->db->initCon(),"INSERT INTO `user_exam_taken` (`user_exam_id`, `completed`, `last_question_id`, `mode`, `question_ids`, `time_elapsed`, `score`) VALUES ('".$request->user_exam_id."', '".$request->completed."', '".$request->last_question_id."', '".$request->mode."', '".$request->question_ids."', '".$request->time_elapsed."', '".$request->score."');");
            mysqli_stmt_execute($stmt);
            $request->id=$this->db->getLastInsertId();
            return $request;
        }

i am using amfphp to write service class which has this function and the front-end is Flex app.

As i was saying this entire app was working fine on another server but recently it was moved to AWS server .

Answer 1

As the code is above there is no way that multiple rows can be inserted unless:

• The script is called multiple times. You could verify this by using firebug or fiddler to monitor the requests in your browser.
• There is a trigger that is causing the duplication.

Additionally, refreshing the page multiple times would also cause the multiple inserts.

It would help to have more code in order to see if there is an issue somewhere else.