Passing multiple variables to another page in url

Question

I m passing a variable to another page in a url using sessions like this but it seems that I can t concatenate another variable to the same url and retrieve it in the next page  successfully    Page 1  session start     event id     SESSION  event id    echo  event id    url    http   localhost main php email      email address    event id         Page 2  if  isset   GET  event id        event id     GET  event id     echo  event id    echo  event id shows an error Undefined variable on page 2 but if I use just the event id in the  url like here     url    http   localhost main php event id      event id    That works fine  but I need to be able to use both variables in the url so that page 2 can retrieve get them

User · Accepted Answer

Use the ampersand  amp  to glue variables together    url    http   localhost main php email  email address amp event id  event id                                      start of vars       next var

User · Answer

You are checking isset   GET  event id   but you ve not set that get variable in your hyperlink  you are just adding email  http   localhost main php email      email address    event id  And add another GET variable in your link   url    http   localhost main php email  email address amp event id  event id     You did not use to concatenate your string if you are using   quotes

User · Answer

from php net  Warning The superglobals   GET and   REQUEST are already decoded  Using urldecode   on an element in   GET or   REQUEST could have unexpected and dangerous results   link  http   php net manual en function urldecode php  be careful

User · Answer

Your first variable declartion must start with a   while any additional must be concatenated with a  amp    single variable URL  http   www example com page var foo multiple variable URL  http   www example com page var foo amp var2 bar

User · Answer

Pretty simple but another said you dont pass session variables through the url bar 1 You dont need to because a session is passed throughout the whole website from header when you put in header file 2 security risks Here is first page code   url    http   localhost main php email     urlencode  email address      amp eventid     urlencode  event id    2nd page when getting the variables from the url bar is   if isset   GET  email     amp  amp   empty   GET  email    AND isset   GET  eventid     amp  amp   empty   GET  eventid          do whatever here    Now if you want to do it the proper way of using the session you created then ignore my above code and call the session variables on the second page for instance create a session on the first page lets say for example      SESSION  WEB SES      email address          event id    obvious that you would have already assigned values to the session variables in the code above  you can call the session name whatever you want to i just used the example web ses   the second page all you need to do is start a session and see if the session is there and check the variables and do whatever with them  example    session start     if  isset   SESSION  WEB SES        Array   explode        SESSION  WEB SES       email    Array 0     event id    Array 1   echo   email    echo   event id        Like I said before the good thing about sessions are they can be carried throughout the entire website if this type of code in put in the header file that gets called upon on all pages that load  you can simple use the variable wherever and whenever  Hope this helps

User · Answer

Short answer   This is what you are trying to do but it poses some security and encoding problems so don t do it    url    http   localhost main php email      email address     amp eventid      event id    Long answer   All variables in querystrings need to be urlencoded to ensure proper transmission  You should never pass a user s personal information in a url because urls are very leaky  Urls end up in log files  browsing histories  referal headers  etc  The list goes on and on   As for proper url encoding  it can be achieved using either urlencode   or http build query    Either one of these should work    url    http   localhost main php email     urlencode  email address      amp eventid     urlencode  event id     or   vars   array  email    gt   email address   event id    gt   event id    querystring   http build query  vars    url    http   localhost main php      querystring    Additionally  if  event id is in your session  you don t actually need to pass it around in order to access it from different pages  Just call session start   and it should be available

User · Answer

lt a href  deleteshare php did  lt  php echo   rowc id      gt  amp uid  lt  php echo   id    gt   gt DELETE lt  a gt    Pass multiple Variable one page to another page

User · Answer

Use  amp  for this  Using  amp  you can put as many variables as you want    url    http   localhost main php event id    event id   amp email    email

[php] Passing multiple variables to another page in url

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