重定向仅适用于特定浏览器

The following code rederict correctly in Chrome, but not in IE... why?

(...)
$x = mysql_real_escape_string($_POST['x']);
$x = mysql_real_escape_string($_POST['x']);
$x = mysql_real_escape_string($_POST['x']);
$x = mysql_real_escape_string($_POST['x']);
$MomentEvent = mysql_real_escape_string($_POST['MomentEvent']);

     {
    $registerquery = mysql_query("INSERT INTO users_event (x, x, x, x, x, MomentEvent) VALUES('".$x."', '".$_SESSION ['x']."', '".$x."', '".$x."', '".$x."', '".$confirm_code=md5(uniqid (rand())). "'); ");
    if($registerquery)
    {
        echo "<h1>XXXX</h1>";
        echo "<p>XXXXX</p>";          
        echo "<meta http-equiv='refresh' content='0;show2.php?MomentEvent=<?php echo $MomentEvent ?>' />";
}
    else
    {
        echo "<h1>Error</h1>";
        echo "<p>Sorry, your registration failed. Please go back and try again.</p>";    
    }

(...)

I think you'd be better off using the header() function to send the appropriate HTTP header for a redirect, like this:

header( "show2.php?MomentEvent=" . $MomentEvent );

If you want to stick with the method you're currently using, you'll want to include the URL= attribute, so it would look like this:

<meta http-equiv='refresh' content='0;URL=show2.php?MomentEvent=<?php echo $MomentEvent; ?>' />