MySQL table only submitting first time from EXT js + PHP entry - php

Question

I am having a problem with my MySQL.
I have everything setup and all is well, but when I submit my form it will only work if the table is completely empty. It will not submit another entry if there is already information stored in the table.
here is the mysql table
CREATE TABLE student
(StudentID int NOT NULL,
StudentFirst varchar(30),
StudentLast varchar(30),
StudentEmail varchar(254),
StudentPhone varchar(12),
StudentDOB date,
DateStarted date,
LessonID int,
StudentAddress varchar(50),
StudentCity varchar(30),
StudentState char(2),
StudentZip varchar(10),
MusicInterest text);
alter table student add constraint StudentPK primary key AUTO_INCREMENT (StudentID);
alter table student add constraint LessonFK foreign key (LessonID) references lesson(LessonID);
This is my PHP
if(isset($_REQUEST['action'])){
switch($_REQUEST['action']){
case 'submit_student':
$first = $_REQUEST['StudentFirst'];
$last = $_REQUEST['StudentLast'];
$email = $_REQUEST['StudentEmail'];
$phone = $_REQUEST['StudentPhone'];
$dob = $_REQUEST['StudentDOB'];
$datestarted = $_REQUEST['DateStarted'];
$lessonid = $_REQUEST['LessonID'];
$address = $_REQUEST['StudentAddress'];
$city = $_REQUEST['StudentCity'];
$state = $_REQUEST['StudentState'];
$zip = $_REQUEST['StudentZip'];
$musicinterest = $_REQUEST['MusicInterest'];
$stmt = $dbh->prepare("insert into student (StudentFirst, StudentLast, StudentEmail, StudentPhone, StudentDOB, DateStarted, LessonID, StudentAddress, StudentCity, StudentState, StudentZip,MusicInterest) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);");
$stmt -> bindParam(1,$first);
$stmt -> bindParam(2,$last);
$stmt -> bindParam(3,$email);
$stmt -> bindParam(4,$phone);
$stmt -> bindParam(5,$dob);
$stmt -> bindParam(6,$datestarted);
$stmt -> bindParam(7,$lessonid);
$stmt -> bindParam(8,$address);
$stmt -> bindParam(9,$city);
$stmt -> bindParam(10,$state);
$stmt -> bindParam(11,$zip);
$stmt -> bindParam(12,$musicinterest);
$stmt -> execute();
break;
and my EXTJs
function addStudent(){
Ext.Ajax.request ({
url: 'inc/template.php',
params: {action: 'submit_student',
StudentFirst:firstNameTextField.getValue(),
StudentLast:lastNameTextField.getValue(),
StudentEmail: emailTextField.getValue(),
StudentPhone:phoneNumberTextField.getValue(),
StudentDOB:Ext.util.Format.date(dateOfBirth.getValue(), 'Y-m-d'),
DateStarted:dateStarted.getValue(),
LessonID:dayTypeCombo.getValue(),
StudentAddress:streetTextField.getValue(),
StudentCity:cityTextField.getValue(),
StudentState:stateTextField.getValue(),
StudentZip:zipTextField.getValue(),
MusicInterest:musicInterest.getValue()
},
method: 'POST',
});
tabPanel.activate(studentGrid);
tabPanel.activate(scheduleGrid);
clearStudentForm();
I have no idea why it only submits one time. It is really baffling. It shows the post in firebug.
any help is much appreciated.

Answer 1

I am not sure about AUTO-INCREMENT statement at
alter table student add constraint StudentPK primary key AUTO_INCREMENT (StudentID);
Also i think, you should use this syntax for multiple columns. for one column use
CREATE TABLE student
(StudentID int NOT NULL PRIMARY KEY,
StudentFirst varchar(30),
...