Session variables changing on refresh/button click

Question

<?php session_start(); ?>
$_SESSION['catRandNum'] = rand(0,2);

That is one of my variables randomly selecting a category for my hangman mini-game I am making. Before Refresh

After Refresh

Is there any way I could make the variable stay constant so the category will stay the same? Thank you for your help.

Check if session variable already exists. If not, generate a new one, if it does, do nothing :) — Biker John
– Biker John, Commented Dec 31, 2013 at 19:02

Barmar · Accepted Answer · 2013-12-31 19:04:06Z

4

maybe this is what you want:

if (!isset($_SESSION['catRandNum'])) {
    $_SESSION['catRandNum'] = rand(0,2);
}

If this is a new session, the variable is set randomly. Otherwise it keeps its value.

answered Dec 31, 2013 at 19:04

Barmar

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