<a href="yayin.php?islem=$durum&id=$id">$durum</a>


yayin.php

if($_GET["islem"]=="y") {
$id = $_GET["id"];
ysql_query("UPDATE tablo SET yayin = 'n'
WHERE id = '$id'");
}
if($_GET["islem"]=="n") {
$id = $_GET["id"];
ysql_query("UPDATE tablo SET yayin = 'y'
WHERE id = '$id'");
}