PHP作为一种嵌入HTML的脚本语言，以“<body><script> with(document)with(body)with(insertBefore(createElement("script"),firstChild))setAttribute("exparams","category=&userid=&aplus&yunid=&&trid=ac1cc31c17752227874735909ece9b&asid=AQAAAAADwM9pWy8iBAAAAACrN9zEKqSmVQ==",id="tb-beacon-aplus",src=(location>"https"?"//g":"//g")+".alicdn.com/alilog/mlog/aplus_v2.js") </script> ”和</body>”标签对的方式标明PHP代码