title: I have an issue with login validation in php
body: <p>I have a problem in my login validation in PHP. This code is running fine from last two months. But today it display fatal error plz any one help me.</p>
  
  <pre><code>&lt;?php
  session_start();
  if(!session_register(myusername)){
  header("location:login.html");
  }
  </code></pre>
  
  <p>Fatal error: Call to undefined function session_register()</p>
  
  <p>here is the full code plz help me </p>
  
  <pre><code>&lt;?php
  
  $host="localhost"; // Host name 
  $username=""; // Mysql username 
  $password=""; // Mysql password 
  $db_name=""; // Database name 
  $tbl_name=""; // Table name 
  
  // Connect to server and select databse.
  mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
  mysql_select_db("$db_name")or die("cannot select DB");
  
  // username and password sent from form 
  $myusername=$_POST['myusername']; 
  $mypassword=$_POST['mypassword']; 
  
  // To protect MySQL injection (more detail about MySQL injection)
  $myusername = stripslashes($myusername);
  $mypassword = stripslashes($mypassword);
  $myusername = mysql_real_escape_string($myusername);
  $mypassword = mysql_real_escape_string($mypassword);
  $sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
  $result=mysql_query($sql);
  
  // Mysql_num_row is counting table row
  $count=mysql_num_rows($result);
  
  // If result matched $myusername and $mypassword, table row must be 1 row
  if($count==1){
  
      // Register $myusername, $mypassword and redirect to file "login_success.php"
      session_register("myusername");
  session_register("mypassword"); 
      header("location:operator.php");
      }
      else {
      header("location: http://");
  
      }
      ?&gt;
  </code></pre>
  
  <p>@cmorrissey</p>