PHP error Notice Undefined index

Question

I am working on a shopping cart in PHP and I seem to be getting this error  Notice  Undefined index   in all sorts of places  The error refers to the similar bit of coding in different places  For example I have a piece of coding that calculates a package price with the months a user decides to subscribe  I have the following variables where the errors refers to        month     POST  month         op     POST  op      The  month variable is the number the user inputs in a form  and the  op variable is different packages whose value are stored in a vriable that a user selects from radio buttons on the form   I hope that is clear in some way   Thank You  EDIT  Sorry forgot to mention that they do go away when the user submits the data  But when they first come to the page it displays this error  How I can get rid of it so it doesnt display it   --  This is the code    lt  php      pack 1   3       pack 2   6       pack 3   9       pack 4   12       month     POST  month         op     POST  op         action     GET  action         if    op     Adopter              answer    pack 1    month             if    op     Defender             answer    pack 2    month             if    op     Protector             answer    pack 3    month             if    op     Guardian             answer    pack 4    month             switch  action               case  adds                 SESSION  cart    answer   op               break          gt

User · Answer

Assure you have used method  post  in the form you are sending data from

User · Answer

undefined index means the array key is not set   do a var dump   POST  die    before the line that throws the error and see that you re trying to get an array key that does not exist

User · Answer

apparently  the GET and or the POST variable s  do es  not exist   simply test if  isset     pseudocode    if isset   GET  action        action     GET  action     else   RECOVER FROM ERROR CODE

User · Answer

Try this    month     isset   POST  month          POST  month           op     isset   POST  op          POST  op

User · Answer

How I can get rid of it so it doesnt display it    People here are trying to tell you that it s unprofessional  and it is   but in your case you should simply add following to the start of your application    error reporting E ERROR E WARNING     This will disable E NOTICE reporting  E NOTICES are not errors  but notices  as the name says  You d better check this stuff out and proof that undefined variables don t lead to errors  But the common case is that they are just informal  and perfectly normal for handling form input with PHP   Also  next time Google the error message first

User · Answer

I think there could be no form elements by name  month  or  op   Can you verify if the HTML source  of the page which results in error when submitted  indeed has html elements by he above names

User · Answer

You re attempting to access indicies within an array which are not set  This raises a notice   Mostly likely you re noticing it now because your code has moved to a server where php ini has error reporting set to include E NOTICE  Either suppress notices by setting error reporting to E ALL  amp   E NOTICE  not recommended   or verify that the index exists before you attempt to access it    month   array key exists  month     POST      POST  month     null

User · Answer

Obviously   POST  month   is not set  Maybe there s a mistake in your HTML form definition  or maybe something else is causing this  Whatever the cause  you should always check if a variable exists before using it  so  if isset   POST  month           month     POST  month      else        month is not set  do something about it  raise an error  throw an exception  orwahtever

User · Answer

This are just php notice messages it seems php ini configurations are not according vtiger standards  you can disable this message by setting error reporting to E ALL  amp   E NOTICE in php ini For example error reporting E ALL amp  E NOTICE  and then restart apache to reflect changes

User · Answer

I did define all the variables that was the first thing I checked  I know it s not required in PHP  but old habits die hard  Then I sanatized the info like this   if    SERVER  REQUEST METHOD       POST       if  empty   POST  name1            name1Err     First Name is a required field        else          name1   test input   POST  name1            check if name only contains letters and whitespace       if   preg match     a-zA-Z        name1            name1Err    Only letters and white space allowed     of course test input is another function that does a trim  strilashes  and  htmlspecialchars  I think the input is pretty well sanitized  Not trying to be rude just showing what I did  When it came to the email I also checked to see if it was the proper format  I think the real answer is in the fact that some variables are local and some are global  I have got it working without errors for now so  while I m extremely busy right now I ll accept shutting off errors as my answer  Don t worry I ll figure it out it s just not vitally important right now

User · Answer

Are you putting the form processor in the same script as the form   If so  it is attempting to process before the post values are set  everything is executing    Wrap all the processing code in a conditional that checks if the form has even been sent     if isset   POST   amp  amp  array key exists  name of your submit input    POST      process form   else    show form  don t process yet   You can break out of php here and render your form     Scripts execute from the top down when programming procedurally   You need to make sure the program knows to ignore the processing logic if the form has not been sent   Likewise  after processing  you should redirect to a success page with something like  header  Location http   www yourdomainhere com formsuccess php      I would not get into the habit of supressing notices or errors   Please don t take offense if I suggest that if you are having these problems and you are attempting to build a shopping cart  that you instead utilize a mature ecommerce solution like Magento or OsCommerce   A shopping cart is an interface that requires a high degree of security and if you are struggling with these kind of POST issues I can guarantee you will be fraught with headaches later   There are many great stable releases  some as simple as mere object models  that are available for download

User · Answer

Make sure the  tags correctly closed  And the closing tag will not include inside a loop   if it contains in a looping structure

User · Answer

it just means that the array    POST in this case  doesn t have an element named what is undefined in your error  PHP issues a NOTICE instead of a WARNING of FATAL ERROR   You can either log less events via editing php ini or deal with it by first checking if the items is indeed initialized already by using isset

User · Answer

lt  php if    POST  parse var       contactform               emailTitle    New Email From KumbhAqua            yourEmail    xyz gmail com             emailField     POST  email             nameField     POST  name             numberField     POST  number             messageField     POST  message                body    lt  lt  lt EOD  lt br gt  lt hr gt  lt br gt      Email   emailField  lt br   gt       Name    nameField  lt br   gt      Message   messageField  lt br   gt    EOD        headers    from   emailField r n        headers     Content-type  text htmml r n        success    mail   yourEmail     emailTitle     body     headers          sent   Thank You   Your Message Has Been sent          gt      lt  DOCTYPE html PUBLIC  -  W3C  DTD XHTML 1 0 Transitional  EN   http   www w3 org TR xhtml1 DTD xhtml1-transitional dtd  gt   lt html xmlns  http   www w3 org 1999 xhtml  gt   lt head gt   lt meta http-equiv  Content-Type  content  text html  charset iso-8859-1    gt   lt title gt    KumbhAqua    lt  title gt        lt meta charset  utf-8  gt       lt meta http-equiv  X-UA-Compatible  content  IE edge  gt       lt meta name  viewport  content  width device-width  initial-scale 1  gt       lt  -- The above 3 meta tags  must  come first in the head  any other head content must come  after  these tags -- gt           lt link rel  stylesheet  href  style1 css  type  text css  gt    lt  head gt    lt body gt       lt div class  container  gt           lt div class  mainHeader  gt               lt div class  transbox  gt                  lt p gt  lt font color  red  face  Matura MT Script Capitals  size   5  gt Kumbh lt  font gt  lt font face  Matura MT Script Capitals  size   5  color                                                                             skyblue  gt Aqua lt  font gt  lt font color  skyblue  gt  Solution lt  font gt  lt  p gt                 lt p  gt  lt font color  skyblue  gt Your First Destination for Healthier Life  lt  font gt  lt  p gt                       lt nav gt  lt ul gt                           lt li gt   lt a href  KumbhAqua html  gt Home lt  a gt  lt  li gt                           lt li gt   lt a href  aboutus html  gt KumbhAqua lt  a gt  lt  li gt                           lt li gt   lt a href  services html  gt Products lt  a gt  lt  li gt                           lt li  class  active  gt   lt a href  contactus php  gt ContactUs lt  a gt  lt  li gt                        lt  ul gt  lt  nav gt                   lt  div gt               lt  div gt           lt  div gt                       lt div class  main  gt                           lt div class  mainContent  gt                               lt h1 style  font-size 28px  letter-spacing  16px  padding-top  20px  text-align center  text-transform  uppercase  color                                      a7a7a7  gt  lt font color  red  gt Kumbh lt  font gt  lt font color  skyblue  gt Aqua lt  font gt  Symbol of purity lt  h1 gt                                   lt div class  contactForm  gt                                       lt form name  contactform  id  contactform  method  POST  action  contactus php   gt                                          Name   lt br   gt                                           lt input type  text  id  name  name  name  maxlength  30  size  30  value   lt  php echo  nameField     gt     gt  lt br   gt                                           E-mail   lt br   gt                                           lt input type  text  id  email  name  email  maxlength  50  size  50  value   lt  php echo  emailField     gt     gt  lt br   gt                                           Phone Number   lt br   gt                                           lt input type  text  id  number  name  number  value   lt  php echo  numberField     gt    gt  lt br   gt                                           Message   lt br   gt                                           lt textarea id  message  name  message  rows  10  cols  20  value   lt  php echo  messageField     gt    gt Some Text                                            lt  textarea gt                                           lt input type  reset  name  reset  id  reset  value  Reset  gt                                           lt input type  hidden  name  parse var  id  parse var  value  contactform    gt                                           lt input type  submit  name  submit  id  submit  value  Submit  gt   lt br   gt                                            lt  php  echo   sent     gt                                        lt  form gt                                           lt  div gt                                 lt div class  contactFormAdd  gt                                        lt img src  Images k1 JPG  width  200  height  200  title  Contactus    gt                                       lt h1 gt KumbhAqua Solution  lt  h1 gt                                       lt strong gt  lt p gt Saraswati Vihar Colony  lt br   gt                                      New Cantt Allahabad  211001                                      lt  p gt  lt  strong gt                                       lt b gt DEEPAK SINGH  amp nbsp  amp nbsp  amp nbsp  RISHIRAJ SINGH lt br   gt                                      8687263459  amp nbsp  amp nbsp  amp nbsp   amp nbsp  amp nbsp 8115120821  lt  b gt                                lt  div gt                           lt  div gt                       lt  div gt                                lt footer class  mainFooter  gt                               lt nav gt                               lt ul gt                                   lt li gt   lt a href  KumbhAqua html  gt  Home  lt  a gt  lt  li gt                                   lt li gt   lt a href  aboutus html  gt  KumbhAqua  lt  a gt  lt  li gt                                   lt li gt   lt a href  services html  gt  Products lt  a gt  lt  li gt                                   lt li class  active  gt   lt a href  contactus php  gt  ContactUs  lt  a gt  lt  li gt                               lt  ul gt                                   lt div class  r footer  gt              Copyright  amp copy  2015  lt a href     Title  KumbhAqua  gt KumbhAqua in lt  a gt   amp nbsp  amp nbsp  amp nbsp  amp nbsp  Created and Maintained By-    lt a title  Randheer                                                                                                                                                                                                                             Pratap Singh  href     gt RandheerSingh lt  a gt                                                                              lt  div gt                                 lt  nav gt                               lt  footer gt       lt  body gt   lt  html gt        enter code here

[php] PHP error: Notice: Undefined index:

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