How to check if any fields in a form are empty in php

Question

whenever I submit something in my form i want to check if any of the fields are empty   So far what I have is not working   firstname     POST  firstname     lastname     POST  lastname     username     POST  username     password     POST  password     passwordconf     POST  passwordconf     email     POST  email     securityq     POST  securityq     qanswer     POST  qanswer     if empty  firstname     empty  lastname     empty  username     empty  password     empty  passwordconf     empty  email     empty  securityq     empty  qanswer         echo  You did not fill out the required fields        and the form   lt form name  registrationform  action  register php  gt      First Name  lt input type  text  name  firstname  gt      Last Name  lt input type  text  name  lastname  gt      Email  lt input type  text  name  email  gt      Username  lt input type  text  name  username  gt      Password  lt input type  password  name  password  gt      Confirm Password  lt input type  password  name  passwordconf  gt      Security Question  lt input type  text  name  securityq  gt      Answer  lt input type  text  name  qanswer  gt       lt input type  submit  name  submit  value  Register  gt   lt  form gt    and heres the registation page if it helps http   www myjournal tk register html

User · Accepted Answer

your form is missing the method      lt form name  registrationform  action  register php  method  post  gt    here   anywyas to check the posted data u can use isset         Determine if a variable is set and is not NULL   if  isset  firstname     trim  firstname              echo  You did not fill out the required fields

User · Answer

Specify POST method in form  lt form name  registrationform  action  register php  method  post  gt    your form code   lt  form gt

[php] How to check if any fields in a form are empty in php

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