How to test for Compatibility View in IE8?

Experts,

I need to alert users to the fact that Compatibility View is on when using IE8.

Is there a way to do this using PHP?

If so, I guess I would do the following:

1) Test to see if browser type equals IE
2) Check to see if Compatibility View is on
3) If Compatibility View is on, alert the user via javascript

I've found some articles on the web that speak to this idea but, none of the examples or proposed solution allow testing via PHP and/or java script.

Can this be done?

Cheers!
evibesmusicAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Kyle AbrahamsSenior .Net DeveloperCommented:
from https://gist.github.com/jasongaylord/5733469

You can do it in javascript:

html:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Testing IE Compatibility Mode</title>
    <script src="ieUserAgent.js" type="text/javascript"></script>
</head>
<body>
<div id="results">Results:</div>
<script type="text/javascript">
    var val = "IE" + ieUserAgent.version;
    if (ieUserAgent.compatibilityMode)
        val += " Compatibility Mode (IE" + ieUserAgent.renderVersion + " emulation)";
    $("#results").html("We have detected the following IE browser: " + val);
</script>
</body>
</html>

Open in new window


Javascript:
// Check to see if jQuery is loaded. If not, load it from the public jQuery CDN.
if (typeof jQuery == 'undefined') {
    // Load the latest jQuery library from jQuery
    document.write("\<script src='http://code.jquery.com/jquery-latest.min.js' type='text/javascript'>\<\/script>");
}
 
// Create new ieUserAgent object
var ieUserAgent = {
    init: function () {
        // Get the user agent string
        var ua = navigator.userAgent;
        this.compatibilityMode = false;
        
        // Detect whether or not the browser is IE
        var ieRegex = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
        if (ieRegex.exec(ua) == null)
            this.exception = "The user agent detected does not contai Internet Explorer.";
 
        // Get the current "emulated" version of IE
        this.renderVersion = parseFloat(RegExp.$1);
        this.version = this.renderVersion;
 
        // Check the browser version with the rest of the agent string to detect compatibility mode
        if (ua.indexOf("Trident/6.0") > -1) {
            if (ua.indexOf("MSIE 7.0") > -1) {
                this.compatibilityMode = true;
                this.version = 10;                  // IE 10
            }
        }
        else if (ua.indexOf("Trident/5.0") > -1) {      
            if (ua.indexOf("MSIE 7.0") > -1) {
                this.compatibilityMode = true;
                this.version = 9;                   // IE 9
            }
        }
        else if (ua.indexOf("Trident/4.0") > -1) {
            if (ua.indexOf("MSIE 7.0") > -1) {
                this.compatibilityMode = true;
                this.version = 8;                   // IE 8
            }
        }
        else if (ua.indexOf("MSIE 7.0") > -1)
            this.version = 7;                       // IE 7
        else
            this.version = 6;                       // IE 6
    }
};
 
// Initialize the ieUserAgent object
ieUserAgent.init();

Open in new window

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Ray PaseurCommented:
I don't know about finding compatibility mode in PHP, but you can examine the clients' browser information, expecting to find something like this:

$_SERVER["HTTP_USER_AGENT"] = Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko

The rv:11.0 means Version 11.  Any browser that is backlevel probably earns a notice that it's time to upgrade.
evibesmusicAuthor Commented:
Perfect. Thank you very much.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Web Browsers

From novice to tech pro — start learning today.