WordPress使用对象储存的简述

function hhg_cdn_callback($buffer) {	
	$hhgoole = str_replace('google.com/recaptcha/api.js', 'recaptcha.net/recaptcha/api.js', $buffer); 
    return str_replace('fonts.googleapis.cn', 'fonts.googleapis.cn', $hhgoole); 
    }
function hhg_buffer_start() {
   ob_start("hhg_cdn_callback");
   }