gzip_accepted() │ WPSCache 1.0

No Hooks.

Returns

null. Nothing (null).

Usage

gzip_accepted();

gzip_accepted() code WPSCache 3.1.0

wp-super-cache/wp-cache-phase2.php 
function gzip_accepted() {
	if ( 1 == ini_get( 'zlib.output_compression' ) || 'on' == strtolower( ini_get( 'zlib.output_compression' ) ) ) { // don't compress WP-Cache data files when PHP is already doing it
		return false;
	}

	if ( ! isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) || ( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) && strpos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip' ) === false ) ) {
		return false;
	}
	return 'gzip';
}