настройка и ошибки скрипта

<?
if ($user['derevo']>=25 && $user['zoloto']>=50){
echo "<form method='post' action='?soedinitb'>";
echo "<input type='submit' name='submit' value='soedinitb'/>";
echo "</form>";
}else{
echo 'false';
}
if(isset($_GET['soedinitb']) && $user['derevo']>=25 && $user['zoloto']>=50){
mysql_query("UPDATE `user` SET `zoloto` = '".($user['zoloto']-20)."' WHERE `id` = '$user[id]' LIMIT 1");
 
$random=mysql_fetch_array(mysql_query("SELECT * FROM `armor` ORDER BY RAND() DESC LIMIT 1"));
 
mysql_query("Insert into `armor_user` values ('id_user', 'id_armor')");
}
?>

<?
$type = $_GET['act'];
If ($type = "soedin") {
    $user['zoloto'] -=20;
    mysql_query("UPDATE `user` SET `zoloto` = '".$user['zoloto']."' WHERE `id` = '$user[id]' LIMIT 1");
    $random = mysql_query("SELECT * FROM `armor` ORDER BY RAND() DESC LIMIT 1");
    while ($row = mysql_fetch_object($random)) {
        mysql_query("Insert into `armor_user` values ('".$row->id_user."', '".$row->id_armor."')");
    }
} else {
    if ($user['derevo']>=25 && $user['zoloto']>=50){
        echo <<<TEXT
            <form method='post' action='?act=soedin'>
                <input type='submit' name='Получить рецепт' value='?act=soedin'>
            </form>
TEXT;
    } else {
        echo 'Недостаточно ресурсов';
    }
}
?>