Login Login Instance Code _php instance in PHP

The example of this article for you to share the login login in PHP specific implementation code, for your reference, the specific content as follows

<?php require ". /include/dbclass.php "; $username =$_post[' username ']; $password =$_post[' password ']; if (Empty ($username) | | empty ($password)) {go_msg ("Please fill in the username, password!") ","..  /default.html ");  Exit } dbconn (); $password =md5 ($password); $SQL = "Select Username,usertype,userpass from SiteUser where Username= '". $username. "' and userpass= '". $password. "' and isopen=1"; echo "$SQL";  $result = $db-Exec_sql ($SQL);  $total =mysql_num_rows ($result);  if ($total ==0) {dbclose (); Go_msg ("The registered user has not passed the administrator audit or user name and password does not match!") Please re-enter! ","..  /default.html ");  Exit  }else{$Rs = $db-Fetch_array ($result);  Attached value, and login Session_register ("username");  Session_register ("usertype");  $_session["Usertype"]= $Rs [' usertype '];  $_session["username"]= $username;  echo $_session["username"]; if ($_session["usertype"]==1) {go_msg ("Login Successful!   "," default.php ");  Header (' location:http://163.com '); } if ($_session["usertype"]==2) {go_msg ("Login succeeded! ","..  /user2/default_1.php "); } if ($_session["usertype"]==3) {go_mSG ("Landing success!") ","..  /user3/default_2.php ");  }//Header (' Location:default.php '); } dbclose (); How to ask Hovertree.com?>

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