PHP Pass variable to next page

Question

It seems pretty simple but I can t find a good way to do it   Say in the first page I create a variable   myVariable    Some text     And the form s action for that page is  Page2 php   So in Page2 php  how can I have access to that variable  I know I can do it with sessions but I think it s too much for a simple string  and I do only need to pass a simple string  a file name    How can I achieve this   Thanks

User · Answer

Sessions would be the only good way  you could also use GET POST but that would be potentially insecure   Passing data in the session If the data doesn t need to be passed to the client-side  then sessions may be more appropriate  Simply call session start   at the start of each page  and you can get and set data into the   SESSION array   Security Since you state your value is actually a filename  you need to be aware of the security ramifications  If the filename has arrived from the client-side  assume the user has tampered with the value  Check it for validity  What happens when the user passes the path to an important system file or a file under their control  Can your script be used to  probe  the server for files that do or do not exist   As you are clearly just getting started here  it is worth reminding that this goes for any data which arrives in   GET    POST or   COOKIE - assume your worst enemy crafted the contents of those arrays  and code accordingly

User · Answer

Sessions would be the only good way  you could also use GET POST but that would be potentially insecure

User · Answer

There are three method to pass value in php    By post   By get    By making session variable   These three method are used for different purpose For example if we want to receive our value on next page then we can use  post     POST  method as -   a   POST  field-name      If we require the value of variable on more than one page than we can use session variable as -   a   SESSION  field-name     Before using this Syntax for creating SESSION variable we first have to add this tag at the very beginning of our php page   session start       GET method are generally used to print data on same page which used to take input from user  Its syntax is as    a   GET  field-name      POST method are generally consume more secure than GET because when we use Get method than it can display the data in URL bar If the data is more sensitive data like password then it can be inggeris

User · Answer

Thanks for the answers above  Here s how I did it  I hope it helps those who follow  I m looking to pass a registration number from one page to another  hence regName and regValue   Create your first page  call it set reg php    lt  php  session start       SESSION  regName      regValue     gt    lt form method  get  action  get reg php  gt       lt input type  text  name  regName  value    gt       lt input type  submit  gt   lt  form gt    Create your second page  call it get reg php    lt  php  session start      regValue     GET  regName     echo  Your registration is     regValue         gt    lt p gt  lt a href  set reg php  gt Back to set reg php lt  a gt    Although not as comprehensive as the answer above  for my purposes this illustrates in simple fashion the relationship between the various elements

User · Answer

HTML   HTTP is stateless  in other words  what you did   saw on the previous page  is completely unconnected with the current page  Except if you use something like sessions  cookies or GET   POST variables  Sessions and cookies are quite easy to use  with session being by far more secure than cookies  More secure  but not completely secure   Session     On page 1   SESSION  varname      var value     On page 2  var value     SESSION  varname      Remember to run the session start    statement on both these pages before you try to access the   SESSION array  and also before any output is sent to the browser   Cookie     One page 1   COOKIE  varname      var value     On page 2  var value     COOKIE  varname      The big difference between sessions and cookies is that the value of the variable will be stored on the server if you re using sessions  and on the client if you re using cookies  I can t think of any good reason to use cookies instead of sessions  except if you want data to persist between sessions  but even then it s perhaps better to store it in a DB  and retrieve it based on a username or id   GET and POST  You can add the variable in the link to the next page    lt a href  page2 php varname  lt  php echo  var value   gt   gt Page2 lt  a gt    This will create a GET variable    Another way is to include a hidden field in a form that submits to page two    lt form method  get  action  page2 php  gt       lt input type  hidden  name  varname  value  var value  gt       lt input type  submit  gt   lt  form gt    And then on page two     Using GET  var value     GET  varname       Using POST  var value     POST  varname       Using GET  POST or COOKIE   var value     REQUEST  varname      Just change the method for the form to post if you want to do it via post  Both are equally insecure  although GET is easier to hack   The fact that each new request is  except for session data  a totally new instance of the script caught me when I first started coding in PHP  Once you get used to it  it s quite simple though

User · Answer

Passing data in the request  You could either embed it as a hidden field in your form  or add it your forms action URL   echo   lt input type  hidden  name  myVariable  value          htmlentities  myVariable     gt      or  echo   lt form method  POST  action  Page2 php myVariable        urlencode  myVariable     gt      Note this also illustrates the use of htmlentities and urlencode when passing data around    Passing data in the session  If the data doesn t need to be passed to the client side  then sessions may be more appropriate  Simply call session start   at the start of each page  and you can get and set data into the   SESSION array   Security  Since you state your value is actually a filename  you need to be aware of the security ramifications  If the filename has arrived from the client side  assume the user has tampered with the value  Check it for validity  What happens when the user passes the path to an important system file  or a file under their control  Can your script be used to  probe  the server for files that do or do not exist   As you are clearly just getting started here  its worth reminding that this goes for any data which arrives in   GET    POST or   COOKIE - assume your worst enemy crafted the contents of those arrays  and code accordingly

User · Answer

page 1    lt form action  exapmple php variable name  value  method  POST  gt        lt button gt           lt input  type  hidden  name  x  gt       lt  button gt   lt  form gt     page 2  if isset   POST  x            new value   GET  variable name

User · Answer

try this code  using hidden field we can pass php varibale to another page  page1 php   lt  php  myVariable    Some text    gt   lt form method  post  action  page2 php  gt    lt input type  hidden  name  text  value   lt  php echo  myVariable    gt   gt    lt button type  submit  gt Submit lt  button gt   lt  form gt    pass php variable to hidden field value so you can access this variable into another page  page2 php   lt  php   text   POST  text     echo  text    gt

[php] PHP Pass variable to next page

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