Untitled

<html>
   <head>
       <title>Registeration!</title>
      <body>
       <?php
       $url = "form2.php";
       $click = "Back To Registeration";
       include("connect.php");
       $username = trim($_POST['username']);
       $password = sha1($_POST['password']);
       $age      = trim($_POST['age']);
       $complexpassword = trim($_POST['password']);
       $country = trim($_POST['country']);
       $address = trim($_POST['address']);
       $number = trim($_POST['number']);
       $sex = trim($_POST['sex']);
       $email = trim($_POST['email']);
       // This code for Register these values in our Database
       $register = "Insert into employees (username, password, age, country, address, number, sex, email) values ('$username', '$password', '$age', '$country', '$address', '$number', '$sex', '$email')";
       $insert = mysql_query($register);
       //create function for insert
       function register() {
        $insert;
      }
      // This makes sure username is unique
      $checkuser = mysql_query("Select username from employees where username = '$username'");
      $checkusernow = mysql_fetch_array($checkuser);
      $checkrow = mysql_num_rows($checkuser);


       ?>
       <?php
       if (!$_POST['username'] | !$_POST['password'] | !$_POST['country'] | !$_POST['address'] | !$_POST['number'] | !$_POST['sex'] | !$_POST['email']) {
               echo "<font size=10>Sorry, you didn't complete all the registeration required</font> <br />";


       ?>
       <a href="<?php echo htmlspecialchars($url); ?>" >
        <?php echo htmlspecialchars($click); ?>
       </a>
        <?php
        } elseif ($checkrow > 0) {
          $ii = 0;
          while ($ii < $checkrow) {
         $checkuser1 = mysql_result($checkuser,$ii,"username");
         if ($checkuser1 == $username ) {
           die("$checkuser1");
         }

        ++$ii; } }
        else if ($checkuser1 != $username ) {
        register();
        echo "<font size=10>Thanks for your Registeration </font>";
          }
        ?>
      </body>
    </html>