浏览器用户返回上一步，自动刷新

方式一、

<input type="hidden" id="refreshed" value="no">

<script type="text/javascript">

onload=function(){

var e=document.getElementById("refreshed");

if(e.value=="no")e.value="yes";

else{e.value="no";location.reload();}

}

</script >

方式二、

header("Cache-Control: no-store, must-revalidate, max-age=0");

header("Pragma: no-cache");

header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");

方式三、

window.onpageshow = function(event) {

if (event.0) {

    window.location.reload()

}

};