[Resolved] might sound stupid

[adi5402]

I am new to programming full stop and this basic if statement is doing my head in can any one see a mistake with the else bit near the end my page keeps throwing a error on one near the bottom.

<?php
session_start();
include "conn.php";
include "common-top.php";

if($_POST['submit'] == "register")
{

	 if($_POST['E-mail'] != "" && $_POST['password'] != "" && 
	$_POST['first_name'] != "" && $_POST['last_name'] != "" )
	{
	$check_user =$_POST['E-mail'];

	$query ='SELECT `Email` '
    . ' FROM `user_info` '
    . ' WHERE `Email` ="'.$ucheck_user.'" ';


	$result = mysql_query($query) or die(mysql_error());

		if(mysql_num_rows($result) != 0)
		{
		include "address-exits.php";
		}
		else 
		{
		$results = mysql_query($query) or die(mysql_error());
		include "thank-u.php";
		}// third if statement closed	
	}// second if statement close 
else 
{
include "form-not-comp.php";
}
else // error is on this line 
{
include "register-form.html";// end of top level if statement
}
include "ending.html";

[planetsim]

if($_POST['E-mail'] != "" && $_POST['password'] != "" && 
        $_POST['first_name'] != "" && $_POST['last_name'] != "" ) 

try using empty so its

if(!empty($_POST['E-mail']) && !empty($_POST['password']) && 
        !empty($_POST['first_name']) && !empty($_POST['last_name'])) 

Also you are missing a }

try this

<?php
session_start();
include "conn.php";
include "common-top.php";

if($_POST['submit'] == "register")
{

   if(!empty($_POST['E-mail']) && !empty($_POST['password']) && !empty($_POST['first_name']) && !empty($_POST['last_name'])) {
      $check_user =$_POST['E-mail'];

   $query ='SELECT `Email` '
    . ' FROM `user_info` '
    . ' WHERE `Email` ="'.$ucheck_user.'" ';


    $result = mysql_query($query) or die(mysql_error());

    if(mysql_num_rows($result) != 0) {
      include "address-exits.php";
    }
    else {
      $results = mysql_query($query) or die(mysql_error());
      include "thank-u.php";
    }// third if statement closed    
} else {
  include "form-not-comp.php";
}
} else {
  include "register-form.html";// end of top level if statement
}

include "ending.html"; 

[adi5402]

tanks man that worked I feel stupid but its just done my head in all morning. thanks