How can one determine if a user is using Internet Explorer using PHP?

To determine if a user is using Internet Explorer using PHP, you can check the user agent string provided by the browser. Internet Explorer typically includes "MSIE" in its user agent string. You can use PHP to parse the user agent string and check if it contains "MSIE" to identify if the user is using Internet Explorer. 

$user_agent = $_SERVER['HTTP_USER_AGENT'];

if (strpos($user_agent, 'MSIE') !== false) {
    echo 'User is using Internet Explorer';
} else {
    echo 'User is not using Internet Explorer';
}

Keywords

user agent browser detection Internet Explorer PHP conditional statement

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