Apache PHP 5 header() Problem SSL domains

I wondered if any one has seen this problem before and开发者_运维百科 if you have an answer on how to fix it. Basically I have a pages that are SSL encrypted, and ones that don't/can't be encrypted (due to a plugin dependancy) So on the pages that are none SSL I detect a header and try and redirect to the HTTP version of the page:

if($_SERVER["HTTPS"] == "on")
{
  header("HTTP/1.1 301 Moved Permanently");
  header("Location: http://www.example.com");
  exit();
}

However PHP seems to block me redirecting from the secure domain to the non secure site of the same domain!

If i go from https://www.example.com -> http://www.secondsite.com it works but, https://www.example.com -> http://www.example.com forces me to stay on the encrypted site and results in an endless redirect.

Any pointers??

Ric

---

You could maybe make sure your headers have not been sent already which might be the case as keeping on the same page. See this from php manual :

function redirect($url, $debug=FALSE){

// If headers not sent yet... then do php redirect
if (!headers_sent()) {
    header('Location: '.$url);
    exit;
// if headers are already sent... do javascript redirect... if javascript is disabled, do html redirect.
} else {

    // Js redirect
    echo '<script type="text/javascript">';
    echo "<!--";
    echo 'window.location.href="'. $url .'";';
    echo "//-->";
    echo '</script>';

    // HTML redirect if js disabled
    echo '<noscript>';
    echo '<meta http-equiv="refresh" content="0;url='.$url.'" />';
    echo '</noscript>';
}
}//==== End -- Redirect