PHP header redirect with POST variables

Question

I m working with PHP  and I m making an action page which a form posts to  The page checks for errors  then if everything is fine  it redirects them to the page where the data has been posted  If not  I need to to redirect them back to the page they were at with an error and the POST variables  Here is the gist of how it works   The HTML would look like this      lt form name  example  action  action php  method  POST  gt     lt input type  text  name  one  gt     lt input type  text  name  two  gt     lt input type  text  name  three  gt     lt input type  submit  value  Submit   gt   lt  form gt    action php would look like this     if error check   POST  one       true       header  Location  form php           Here is where I need the data to POST back to the form page    else          function to insert data into database     header  Location  posted php        In the case of an error  I need it to POST back to the first page  I can t use GET  because the input will be too large  I don t want to use SESSION  if possible  Is this possible

User · Accepted Answer

If you don t want to use sessions  the only thing you can do is POST to the same page  Which IMO is the best solution anyway      form php   lt  php      if   empty   POST  submit                  validate          if   allGood                   put data into database or whatever needs to be done              header  Location  nextpage php                exit                     gt    lt form action  form php  gt       lt input name  foo  value   lt  php if   empty   POST  foo     echo htmlentities   POST  foo       gt   gt           lt  form gt    This can be made more elegant  but you get the idea

User · Answer

Use a smarty template for your stuff then just set the POST array as a smarty array and open the template  In the template just echo out the array so if it passes   if correct       header  Location  passed php      else        smarty- gt assign  variables     POST        smarty- gt display  register error php        exit      I have not tried this yet but I am going to try it as a solution and will let you know what I find  But of course this method assumes that you are using smarty   If not you can just recreate your form there on the error page and echo info into the form or you could send back non important data in a get from and get it  ex   register php name mr jones amp address         echo   GET name

User · Answer

from http   wezfurlong org blog 2006 nov http-post-from-php-without-curl function do post request  url   data   optional headers   null       params   array  http    gt  array                 method    gt   POST                  content    gt   data                   if   optional headers     null         params  http    header      optional headers         ctx   stream context create  params      fp    fopen  url   rb   false   ctx     if    fp        throw new Exception  Problem with  url   php errormsg           response    stream get contents  fp     if   response     false        throw new Exception  Problem reading data from  url   php errormsg          return  response

User · Answer

It would be beneficial to verify the form s data before sending it via POST  You should create a JavaScript function to check the form for errors and then send the form  This would prevent the data from being sent over and over again  possibly slowing the browser and using transfer volume on the server   Edit   If security is a concern  performing an AJAX request to verify the data would be the best way  The response from the AJAX request would determine whether the form should be submitted

User · Answer

It is not possible to redirect a POST somewhere else  When you have POSTED the request  the browser will get a response from the server and then the POST is done  Everything after that is a new request  When you specify a location header in there the browser will always use the GET method to fetch the next page   You could use some Ajax to submit the form in background  That way your form values stay intact  If the server accepts  you can still redirect to some other page   If the server does not accept  then you can display an error message  let the user correct the input and send it again

[php] PHP header() redirect with POST variables

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