Detecting UTF8 browser support?

[random1]

How can you detect if a browser supports UTF8 using PHP?  ???

 

I have my site set up properly for utf8 but want to be able to pick up browsers that don't support utf8.

[DarkWater]

<?php
if (strpos($_SERVER['HTTP_ACCEPT_CHARSET'], 'utf-8') !== FALSE) {
//utf-8 good
}

[random1]

I now have:

 

	// Detecting if the browser supports UTF character set (required)
	if (strpos($_SERVER['HTTP_ACCEPT_CHARSET'], 'utf-8') !== FALSE)
	{
		echo 'true';
	}
	else
	{
		echo 'false';
	}

 

and it is working in Firefox and Opera but not in Internet Explorer or Safari. Any suggestions.

 

Internet Explorer and Safari show the notice:

 

Notice: Undefined index: HTTP_ACCEPT_CHARSET in ........ 

[DarkWater]

Well that's quite a problem.  Access this page in IE:

 

<?php
echo "<pre>" . print_r($_SERVER, true) . "</pre>";
?>

 

And show me the output.

[random1]

Hmm.. $_SERVER does not contain anything about utf at all in Safari or IE.

 

Maybe I'd need to check another way? I'll probably use a mix of this code and my browser detection to determine it.

 

Thanks, help much appreciated

[DarkWater]

You could always supply multiple charsets in the meta tags (at least, I'm 99% sure that you can).

 

<meta http-equiv="content-type" content="text/html; charset=utf-8,iso-8859-1" />