How can the browser's headers be used to determine if gzip compression is supported?

To determine if gzip compression is supported by the browser, you can check the Accept-Encoding header in the HTTP request. If the header includes "gzip" or "deflate", then the browser supports gzip compression. You can use this information to serve compressed content to compatible browsers for faster loading times. 

if (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false) {
    // Gzip compression is supported, serve compressed content
    ob_start('ob_gzhandler');
} else {
    // Gzip compression is not supported, serve uncompressed content
    ob_start();
}

Keywords

PHP browser headers gzip compression content encoding Accept-Encoding

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