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      $host="localhost"; // Host name 

      $username=""; // Mysql username 

      $password=""; // Mysql password 

      $db_name="test"; // Database name 

      $tbl_name="members"; // Table name 

      

         // Connect to server and select database.

      mysql_connect("$host", "$username", "$password")or die("cannot connect to server "); 

      mysql_select_db("$db_name")or die("cannot select DB");

      

    

     $sql="SELECT * FROM $tbl_name";

      $result=mysql_query($sql);

     $rows=mysql_fetch_array($result);

      $counter=$rows['counter'];

      

    

     // if have no counter value set counter = 1

      if(empty($counter)){

      $counter=1;

      $sql1="INSERT INTO $tbl_name(counter) VALUES('$counter')";

      $result1=mysql_query($sql1);

      }

     echo "You 're visitors No. ";

      echo $counter;

      

    

     // count  more value

      $addcounter=$counter+1;

      $sql2="update $tbl_name set counter='$addcounter'";

      $result2=mysql_query($sql2);

      

    

     mysql_close();