How to keep value in variable after refresh page in PHP? - php

Question

I writing simple game. I randomizes two numbers and then user put your sum value number to input form whose I sent on the same site. Now if user guess sum numbers it he get 10 points, but if he will miss, lost one chance.
I have problem, because if i Refresh site i overiate he points and chance. Any solution?
$_SESSION['points'];
//$_SESSION['chance'];
$X = rand(1, 10);
$Y = rand(1, 10);
echo $X . " " . $Y;
?>
<form name="MyForm" action="" method="POST">
<input type="text" name="value">
<input type="hidden" value="<?= $X ?>" name="number">
<input type="hidden" value="<?= $Y ?>" name="number2">
<input type="submit" value="Generuj" name="Wynik?"/>
</form>
<?php
if (!empty($_POST) && isset($_POST)) {
$user = $_POST['value'];
if ($_POST['number'] * $_POST['number2'] == $user) {
echo ' ok !';
echo $_SESSION['points'] += 10;
} else {
echo 'error';
// echo 'You lost one chance' . $_SESSION['chance']--;
}
}

Answer 1

You can simply use a PHP session OR a PHP Cookie.
Using cookies (if information is not sensible)
<?php
$value = 'something from somewhere';
setcookie("TestCookie", $value);
setcookie("TestCookie", $value, time()+3600); /* expire in 1 hour */
?>
Then you can echo your cookie like this
<?php
echo $_COOKIE['TestCookie'];
?>
If you're using Sessions
<?php
session_start();
$_SESSION['myVar'] = $myValue;
?>
Then you can echo it that way
<?php
echo $_SESSION['myVar'];
?>
NOTE that with the session, you always have to start your session at the beginning of your PHP file.