How to insert values from text box to global variable

[spire_bt]

I have never done this so if anyone has any code or a tutorial on how to do this pls post 🙂 it
the thing is that I want to enter some text in the text box and after clicking the submit button I want that text to be stored i a variable that I will use in another form or in the same one dose not maters

[djjjozsi]

"first_page.php" file:

<?php
session_start();  //start the session
if(isset($_POST["textfield"]))   //if you post the form with the value textfield
$_SESSION["my_var"]=stripslashes($_POST["textfield"]); 
//clear the \ signs from the posted text... and set the session variable with that, called my_var
?>

<form name="form" method="post" action="?">
<?php
if(isset($_SESSION["my_var"]))   //if this session variable has a value, lets print another textfield...
  print 'Your text<input type="text" name="textfield" value="'.$_SESSION["my_var"].'">';
else
  print 'Type a variable<input type="text" name="textfield" value="">';  //in that case, the session has'nt got a value.
?>
<input type="submit" name="Submit" value="Submit"> </form>
<a href="anpther_page.php"> LEts see this session variable...</a>

on "anpther_page.php" file,

<?php
if(isset($_SESSION["my_var"]))
  print 'Your text is:"'.$_SESSION["my_var"];
else
print '<a href="first_page.php"> LEts set a variable in this page: first_page.php .</a>';

?>