<div id="container">          <?if( isset($_POST['send']) && (!validateName($_POST['name']) || !validateEmail($_POST['email']) || !validatePasswords($_POST['pass1'], $_POST['pass2']) || !validateMessage($_POST['message']) ) ):?>                  <div id="error">                      <ul>                          <?if(!validateName($_POST['name'])):?>                              <li><strong>Invalid Name:</strong> We want names with more than 3 letters!</li>                          <?endif?>                          <?if(!validateEmail($_POST['email'])):?>                              <li><strong>Invalid E-mail:</strong> Stop cowboy! Type a valid e-mail please :P</li>                          <?endif?>                          <?if(!validatePasswords($_POST['pass1'], $_POST['pass2'])):?>                              <li><strong>Passwords are invalid:</strong> Passwords doesn't match or are invalid!</li>                          <?endif?>                          <?if(!validateMessage($_POST['message'])):?>                              <li><strong>Ivalid message:</strong> Type a message with at least with 10 letters</li>                          <?endif?>                      </ul>                  </div>              <?elseif(isset($_POST['send'])):?>                  <div id="error" class="valid">                      <ul>                          <li><strong>Congratulations!</strong> All fields are OK ;)</li>                      </ul>                  </div>          <?endif?>          <form method="post" id="customForm" action="">              <div>                  <label for="name">Name</label>                  <input id="name" name="name" type="text" />                  <span id="nameInfo">What's your name?</span>              </div>              <div>                  <label for="email">E-mail</label>                  <input id="email" name="email" type="text" />                  <span id="emailInfo">Valid E-mail please, you will need it to log in!</span>              </div>              <div>                  <label for="pass1">Password</label>                  <input id="pass1" name="pass1" type="password" />                  <span id="pass1Info">At least 5 characters: letters, numbers and '_'</span>              </div>              <div>                  <label for="pass2">Confirm Password</label>                  <input id="pass2" name="pass2" type="password" />                  <span id="pass2Info">Confirm password</span>              </div>              <div>                  <label for="message">Message</label>                  <textarea id="message" name="message" cols="" rows=""></textarea>              </div>              <div>                  <input id="send" name="send" type="submit" value="Send" />              </div>          </form>      </div> 

<?php      function validateName($name){          //if it's NOT valid          if(strlen($name) < 4)              return false;          //if it's valid          else              return true;      }      function validateEmail($email){          return ereg("^[a-zA-Z0-9]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$", $email);      }      function validatePasswords($pass1, $pass2) {          //if DOESN'T MATCH          if(strpos($pass1, ' ') !== false)             return false;         //if are valid         return $pass1 == $pass2 && strlen($pass1) > 5;     }     function validateMessage($message){         //if it's NOT valid          if(strlen($message) < 10)              return false;          //if it's valid          else              return true;      }  ?>