PHP网页安全认证的实例详解

不基于数据库：

<?php //unset($_SERVER['PHP_AUTH_USER']); $strAuthUser= $_SERVER['PHP_AUTH_USER']; $strAuthPass= $_SERVER['PHP_AUTH_PW']; if (! ($strAuthUser == "a" && $strAuthPass == "a")) { header('"); //unset($_SERVER['PHP_AUTH_USER']); }?>

基于数据库：

<?php function authenticate_user() { header('WWW-Authenticate: Basic realm="Secret Stash"'); header("HTTP/1.0 401 Unauthorized"); exit; } if (! isset($_SERVER['PHP_AUTH_USER'])) { authenticate_user(); } else { mysql_pconnect("localhost","authenticator","secret") or die("Can't connect to database server!"); mysql_select_db("java2s") or die("Can't select authentication database!"); $query = "SELECT username, pswd FROM user WHERE username='$_SERVER[PHP_AUTH_USER]' AND pswd=MD5('$_SERVER[PHP_AUTH_PW]')"; $result = mysql_query($query); // If nothing was found, reprompt the user for the login information. if (mysql_num_rows($result) == 0) { authenticate_user(); } } ?>

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