经测试代码如下：
/**
* 确保url转向
*
* @param
* @arrange (512.笔记) jb51.cc
**/
function safe_redirect($url,$exit=true) {
// Only use the header redirection if headers are not already sent
if (!headers_sent()){
header('HTTP/1.1 301 Moved Permanently');
header('Location: ' . $url);
// Optional workaround for an IE bug (thanks Olav)
header("Connection: close");
}
// HTML/JS Fallback:
// If the header redirection did not work,try to use varIoUs methods other methods
print '<html>';
print '<head><title>Redirecting you...</title>';
print '<Meta http-equiv="Refresh" content="0;url='.$url.'" />';
print '</head>';
print '<body onl oad="location.replace(\''.$url.'\')">';
// If the javascript and Meta redirect did not work,// the user can still click this link
print 'You should be redirected to this URL:<br />';
print "<a href="$url">$url</a><br /><br />";
print 'If you are not,please click on the link above.<br />';
print '</body>';
print '</html>';
// Stop the script here (optional)
if ($exit) exit;
}
/*** 来自编程之家 jb51.cc（jb51.cc） ***/