Are there any differences in detecting browser language between Firefox and Internet Explorer in PHP?

When detecting browser language in PHP, there may be differences in how Firefox and Internet Explorer send the language information in the HTTP headers. To ensure accurate language detection, it's recommended to check both the 'HTTP_ACCEPT_LANGUAGE' and 'HTTP_USER_AGENT' server variables for each browser. 

$browser_language = '';

if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])){
    $browser_language = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
} elseif(isset($_SERVER['HTTP_USER_AGENT'])){
    $browser_language = $_SERVER['HTTP_USER_AGENT'];
}

echo "Browser language: " . $browser_language;

Keywords

PHP browser language detection Firefox Internet Explorer

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