and this value is accessed in the php script
as
$newvalue = $_REQUEST['id3'];
or
$newvalue = $_GET['id3'];
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Question
Store a variable after reload page
Recently I've asked a question about reloading page and I've got an answer which have the following code
document.location.href="<?
It let me to keep a variable "id2" after reloading the page.
actually I am not quite understand the meaning of this piece of code, now I would like to store one more variable after reloading the page. It is just a variable declared in my php page, can I do this?
thanks
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Answers
@minutes
you have to differentiate between javascript and php. If you want to load a variable $test in the php page that the javascript link is going to it has to look like as follows:
document.location.href="<?
in the php-page you get:
$id2 = $_GET['id2'] (as venkateshwarr wrote)
$test = $_GET['test'] (will get the value == someValue)
//jan
Sessions are a more convenient way to deal with this:
<?php
session_start(); // call this at the beginning of your script
// this code saves the values (you'd use this at the end of your script)
$_SESSION['obj1'] = serialize($obj1);
$_SESSION['obj2'] = serialize($obj2);
// this code gets the values
$obj1 = unserialize($_SESSION['obj
$obj2 = unserialize($_SESSION['obj
// ... etc
?>
$_SESSION is an array where you can store arbitrary data that will persist between sessions. See http://www.php.net/session
serialize() turns a PHP structure (such as an array or even an object) into a string. unserialize() turns a string obtained with serialize() back into the PHP structure it was before it was serialized.
Sorry, but I just try to implement in this code but it doesn't work.
<html>
<head>
<title>Main page for CSM</title>
</head>
<script>
function reload(form)
{
document.location.href="<?
}
</script>
<body>
<?php
$formvalue = "testing";
$scriptvalue1 = $_GET['scriptvalue'];
echo $scriptvalue1;
?>
<select name='select' onChange='reload(this)'>
<option>a</option>
<option>b</option>
</select>
</body>
</html>
You have to give a value to $formvalue above the
document.location.href="<?
line.
<html>
<head>
<title>Main page for CSM</title>
</head>
<script>
<?php $formvalue="testing"; ?>
function reload(form)
{
document.location.href="<?
}
</script>
<body>
<?php
$scriptvalue1 = $_GET['scriptvalue'];
echo $scriptvalue1;
?>
<select name='select' onChange='reload(this)'>
<option>a</option>
<option>b</option>
</select>
</body>
</html>
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by: venkateshwarrPosted on 2004-04-19 at 11:51:38ID: 10862431
Here
$PHP_SELF is the name of the script file. If you add variable value pairs at the end of the page and the reloads, the values are sent to the page using get method.
to add one more variable use this.
document.location.href="<?