在Chrome中，基于$ _SERVER ['HTTP_HOST']的PHP加载CSS失败

Question

I'm trying to load a CSS file from a directory based on a dynamic filename generated with PHP $_SERVER['HTTP_HOST']. The idea being $_SERVER['HTTP_HOST'] is queried and matched to a client id. That id is used in the CSS filename ie "1.css" or "5.css" in the html head depending on the client id.

This method seems to be working in Safari and Firefox but just loads ".css" in google chrome on my mac.

Since PHP is server-side I can only assume it's the $_SERVER['HTTP_HOST'] which is not being picked up via Chrome.

Two questions. Why? And - since this is a serious issue - what are my alternatives for dynamically writing the .css filename?

Thanks!

// Set client ID for session
$id_client_sql = "SELECT id FROM client WHERE url='".$_SERVER['HTTP_HOST']."'";
$id_client_res =  mysqli_query($dbConnect, $id_client_sql) or die(mysqli_error($dbConnect));

$client = mysqli_fetch_array($id_client_res);
$id_client = $client['id_client'];

Then -

$display_block .= '<link  rel="stylesheet" href="'.$id_client.'.css">'; //etc...

Answer 1

Use $_SERVER['SERVER_NAME'] instead in Chrome. I know this one was solved already but I encountered a blank HTTP_HOST in Chrome and trying SERVER_NAME instead fixed it.