Cacher is the code snippet organizer for pro developers

<?php
/**
 * gzip压缩输出
 * @param unknown $content
 * @return string
 */
function ob_gzip($content) {
	if (!headers_sent() && extension_loaded("zlib") && strstr($_SERVER["HTTP_ACCEPT_ENCODING"], "gzip")) {
		// $content = gzencode($content." \n//此页已压缩",9);
		$content = gzencode($content, 9);
		header("Content-Encoding: gzip");
		header("Vary: Accept-Encoding");
		header("Content-Length: " . strlen($content));
	}
	return $content;
}