復制代碼 代碼如下:

<?php
$realm="MyRealm";
//如果沒有驗證信息，則發送報頭要求瀏覽器使用摘要式身份驗證
if(!isset($_SERVER['PHP_AUTH_DIGEST'])){
header("WWW-Authenticate:Digest Realm=/"$realm/",nonce=/"".uniqid()."/",algorithm=MD5,qop=/"auth/"");
header("HTTP/1.0 401 Unauthorization Required");
echo "賬號/密碼錯誤！";
exit;
}else{
//使用函數http_digest_parse解析驗證信息
$data=http_digest_parse($_SERVER["PHP_AUTH_DIGEST"]);
if(!$data){
header("HTTP/1.0 401 Unauthorization Required");
echo "賬號/密碼錯誤！";
exit;
}else{
//根據HTTP協議，自己構建一個response值
$A1=md5('admin:'.$realm.':password');
$A2=md5($_SERVER['REQUEST_METHOD'].':'.$data['uri']);
$valid_response=
md5($A1.':'.$data['nonce'].':'.$data['nc'].':'.$data['cnonce'].':'.$data['qop'].':'.$A2);}
//將自己構建的response值與瀏覽器構建并發送過來的response值對比，如果相同那么就證明用戶名和密碼輸入是正確的
if($data['response']==$valid_response){
echo "驗證通過！";
}else{
header("HTTP/1.0 401 Unauthorization Required");
echo("賬號/密碼錯誤！");
exit;
}
}
function http_digest_parse($digest_str){
$needed_parts=array('nonce'=>1,'nc'=>1,'cnonce'=>1,'qop'=>1,'username'=>1,'uri'=>1,'response'=>1);
//使用正則表達式解析Authorization報頭的內容
preg_match_all('@(/w+)=([/'"]?)([a-zA-Z0-9=.//_-]+)/2@',$digest_str,$result,PREG_SET_ORDER);
//將結果填充$data數組，并返回
$data=array();
foreach($result as $m){
$data[$m[1]]=$m[3];
unset($needed_parts[$m[1]]);
}
return $needed_parts?false:$data;
}
?>