XMLHttpRequest Basic 认证

<script>
if(window.XMLHttpRequest){  // code for IE7+, Firefox, Chrome, Opera, Safari
    xmlhttp=new XMLHttpRequest();
}else{  // code for IE6, IE5
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
var async = true
if(async === true){
    xmlhttp.onreadystatechange = function(){
        if(xmlhttp.readyState < 4){
            console.log(‘loading...‘)
        }else if (xmlhttp.readyState == 4 && xmlhttp.status == 200){
            xmlDoc=xmlhttp.responseText;
            console.log(xmlDoc)
        }else{
            console.log(‘fail...‘)
            xmlhttp.abort()
        }
    }
}
xmlhttp.open("POST",‘http://192.168.0.200/index.php‘,async);
xmlhttp.withCredentials = true;
xmlhttp.setRequestHeader("Authorization", "Basic " + btoa("user:pass"));
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send(‘name=lee‘);
if(async === false){
    xmlDoc=xmlhttp.responseText;
    console.log(xmlDoc)
}
</script>

<?php
if(!(isset($_SERVER[‘PHP_AUTH_USER‘],$_SERVER[‘PHP_AUTH_PW‘])&&$_SERVER[‘PHP_AUTH_USER‘]==‘user‘&&$_SERVER[‘PHP_AUTH_PW‘]==‘pass‘)){
header(‘WWW-Authenticate:Basic realm ="Restricted area"‘);
}else{  // 验证成功
echo "Success";
}