WordPress不用插件使用七牛云存储加速网站

	//七牛镜像存储
	if ( !is_admin() ) {
		add_action(\'wp_loaded\',\'c7sky_ob_start\');
		function c7sky_ob_start() {
			ob_start(\'c7sky_qiniu_cdn_replace\');
		}
		function c7sky_qiniu_cdn_replace($html){
			$local_host = \'https://www.xxx.com\'; //你的网站域名  http或是https根据你的站点更换
			$qiniu_host = \'https://img.xxx.com\'; //你的七牛域名  http或是https根据你的站点更换
			$cdn_exts   = \'png|jpg|jpeg|gif\'; //扩展名（使用|分隔）
			$cdn_dirs   = \'wp-content|wp-includes\'; //目录（使用|分隔）
			$cdn_dirs   = str_replace(\'-\', \'\\-\', $cdn_dirs);
			if ($cdn_dirs) {
				$regex  =  \'/\' . str_replace(\'/\', \'\\/\', $local_host) . \'\\/((\' . $cdn_dirs . \')\\/[^\\s\\?\\\\\\\'\\\"\\;\\>\\<]{1,}.(\' . $cdn_exts . \'))([\\\"\\\\\\\'\\s\\?]{1})/\';
				$html =  preg_replace($regex, $qiniu_host . \'/$1$4\', $html);
			} else {
				$regex  = \'/\' . str_replace(\'/\', \'\\/\', $local_host) . \'\\/([^\\s\\?\\\\\\\'\\\"\\;\\>\\<]{1,}.(\' . $cdn_exts . \'))([\\\"\\\\\\\'\\s\\?]{1})/\';
				$html =  preg_replace($regex, $qiniu_host . \'/$1$3\', $html);
			}
			return $html;
		}
	}