PHP 점프는 브라우저 주소를 변경하지 않습니다

function createXMLHttpRequest(){
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        try{
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        }catch(e){
            try{
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            }catch(e){
            }
        }
    }
}
function sendRequest(url){
    createXMLHttpRequest();
    XMLHttpR.open("GET",url,true);
    XMLHttpR.setRequestHeader("Content-Type","text/html;charset=utf-8");
    XMLHttpR.onreadystatechange = processResponse;
    XMLHttpR.send(null);
}
function processResponse(){
    if(XMLHttpR.readyState ==4 && XMLHttpR.status == 200){
        document.write(XMLHttpR.responseText);
    }
}

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