function redirect($url) {
if(!headers_sent()) {
    //If headers not sent yet... then do PHP redirect
    header('Location: '.$url);
    exIT;
} else {
    //If headers are sent... do javascript redirect... if javascript disabled,do htML redirect.
    echo '<script tyPE="text/javascript">';
    echo 'window.location.href="'.$url.'";';
    echo '</script>';
    echo '<noscript>';
    echo '<Meta http-equiv="refresh" content="0;url='.$url.'" />';
    echo '</noscript>';
    exit;
}
   }

我在PHP SESSION中插入错误,如下所示：

session_start();
$_SESSION['errors'] = array();

...

array_push($_SESSION['errors'],"<span style = 'color:green;'>Success!</span>");
Redirect("somepage.PHP"); // OR header("Location: somepage.PHP");

并显示通知：

if(isset($_SESSION['errors']) && count($_SESSION['errors']) > 0) {
    foreach($_SESSION['errors'] as $k => $v)
        echo($v . "<br/>");
    unset($_SESSION['errors']);
}

在SESSION中发出通知是安全又好的方法吗？如果没有,在标题重定向后显示通知的最佳方法是什么？！