Menu
I have got two requirements for the code snippet below.
The var is to be incremented when I click the check box. - Done
The var should save the previous number if the check box is not
checked. - Not Done
Currently it changes back to 1 if you do not check the check box for var.
The code snippet:
if (isset($_POST['var'])) {
$var = $var + 1;
} else {
$var = $_POST['var'];
}
631
asked Dec 01 '25 02:12
You could consider using session variables for your purpose.
Firstly, you may start the new session like this:
session_start();
Then, you could do the thing you desire in the following manner:
// Initialize $_SESSION['var'], if needed
if(!isset($_SESSION['var'])) {
$_SESSION['var'] = 0;
}
if (isset($_POST['var'])) {
// Increment the var
$var = $_SESSION['var'] + 1;
// Save the var as a session variable
$_SESSION['var'] = $var;
} else {
// Restore the var from the session variable
$var = $_SESSION['var'];
}
Also, at some point you might want to destroy a session data. It is performed as following in PHP:
session_destroy();
Please take into account the fact that good practices of using PHP sessions is a completely separate question for which you could google.
Click for some more sandbox-level info on PHP Sessions.
UPD: Here is a full PHP / HTML code for a working example of what you are looking for:
<?php session_start(); ?>
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<form method="POST">
Increment $var <input type="checkbox" name="var" value="var">
<input type="submit" value="Submit">
</form>
<p>
<?php
// Initialize $_SESSION['var'], if needed
if(!isset($_SESSION['var'])) {
$_SESSION['var'] = 0;
}
if (isset($_POST['var'])) {
// Increment the var
$var = $_SESSION['var'] + 1;
// Save the var as a session variable
$_SESSION['var'] = $var;
} else {
// Restore the var from the session variable
$var = $_SESSION['var'];
}
echo $var;
?>
</p>
</body>
</html>
Please let me know whether it helps or not.
72
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
