Popup window in PHP

Question

here s a quick question   How do you make a window pop up for your error handling in php  Is javascript the only way to do this or is there a way to do this in PHP   i have a PHP-file  and one of the lines of code is the following    echo implode   lt br   gt     errors     This line of code catches all the errors coming from my form  as following    if  strlen   POST  name    lt 3   errors      De naam van uw bedrijf moet minstens 3 letters bevatten     if  strlen   POST  number    lt 9   errors      Uw nummer moet minstens 9 nummers bevatten     if   preg match  regexp mail    POST  email      errors      Onjuist E-mailadres     when somebody presses submit on my form  the errors will show themselves on a separate page  i want this in a pop-up window  Thank you in advance

User · Answer

if  isset   POST  Register                    ErrorArrays   array       Empty array for input errors            Input Username     POST  Username             Input Password     POST  Password             Input Confirm     POST  ConfirmPass             Input Email     POST  Email             if  empty  Input Username                          ErrorArrays      Username Is Empty                     if  empty  Input Password                          ErrorArrays      Password Is Empty                     if   Input Password      Input Confirm                         ErrorArrays      Passwords Do Not Match                      if   filter var  Input Email  FILTER VALIDATE EMAIL                          ErrorArrays      Incorrect Email Formatting                      if  count  ErrorArrays     0                           No Errors                   else                       foreach   ErrorArrays AS  Errors                                echo   lt font color  red  gt  lt b gt    Errors   lt  font gt  lt  b gt  lt br gt                                     gt        lt form method  POST  gt           Username   lt input type  text  name  Username  gt   lt br gt          Password   lt input type  password  name  Password  gt  lt br gt          Confirm Password   lt input type  password  name  ConfirmPass  gt  lt br gt          Email   lt input type  text  name  Email  gt   lt br gt  lt br gt            lt input type  submit  name  Register  value  Register  gt         lt  form gt     This is a very basic PHP Form validation  This could be put in a try block  but for basic reference  I see this fit following our conversation in the comment box    What this script will do  is process each of the post elements  and act accordingly  for example        if   filter var  Input Email  FILTER VALIDATE EMAIL                          ErrorArrays      Incorrect Email Formatting               This will check      if  Input Email is not a valid email  If this is not a valid E-mail  then a message will get added to a empty array    Further down the script  you will see        if  count  ErrorArrays     0                   No Errors           else               foreach   ErrorArrays AS  Errors                        echo   lt font color  red  gt  lt b gt    Errors   lt  font gt  lt  b gt  lt br gt                      Basically  if the array count is not 0  errors have been found  Then the script will print out the errors   Remember  this is a reference based on our conversation in the comment box  and should be used as such

User · Answer

PHP runs on the server-side thus you have to use a client-side technology which is capable of showing popup windows  JavaScript   So you should output a specific JS block via PHP if your form contains errors and you want to show that popup

User · Answer

For a popup javascript is required  Put this in your header    lt script gt  function myFunction     alert  I am an alert box        this is the message in       lt  script gt    And this in your body    lt input type  button  onclick  myFunction    value  Show alert box  gt    When the button is pressed a box pops up with the message set in the header   This can be put in any html or php file without the php tags   -----EDIT-----  To display it using php try this    lt  php echo   lt script gt myfunction   lt  script gt      gt    It may not be 100  correct but the principle is the same   To display different messages you can either create lots of functions or you can pass a variable in to the function when you call it

User · Answer

You ll have to use JS to open the popup  though you can put it on the page conditionally with PHP  you re right that you ll have to use a JavaScript function

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