l104/H11/11.8.php

<!DOCTYPE html> <?php if(isset($_POST['kleur'])){ $kleur= $_POST['kleur']; setcookie('kleur',$kleur, time() + 52*7*24*60*60); } else{ if (isset($_COOKIE['kleur'])){ $kleur = $_POST['kleur']; setcookie('kleur',$kleur, time() + 52*7*24*60*60); } else{ setcookie('kleur',"green", time() + 52*7*24*60*60); } } ?> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> body{ background-color: <?php echo $kleur; ?>; } </style> </head> <body> <form method='post' action =''> <div><input type='radio' name='kleur' value="green" <?php if(isset($kleur) && $kleur =="green"){echo "checked";}; ?>> Groen</div> <div><input type='radio' name='kleur' value="red" <?php if(isset($kleur) && $kleur =="red"){echo "checked";}; ?>> Rood</div> <div><input type='radio' name='kleur' value="blue"<?php if(isset($kleur) && $kleur =="blue"){echo "checked";}; ?>> Blauw</div> <div><input type='submit' valuea='Posten'></div> </form> </body> </html>

Resultaat

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