Formated by GeSHi
<?php
include('db_connect.function.php');
function login(){
session_start();
if($_SESSION['prihlaseny'] != 'ano'){
	echo "You are not logged in.<a href='login.php'>Click here to login.</a>";
	die();}
if($_SESSION['prihlaseny'] == 'ano'){
	echo "<a href='logout.php?logout=yes'>Logout</a>";}
	}
 
function write_threads(){
	$nickname = $_SESSION['nickname'];
	$sql = "SELECT * FROM threads";
	$query = mysql_query($sql) or die(mysql_error());
	while($write = mysql_fetch_array($query)){
		echo "<a href=\"write.php?user=". htmlspecialchars($nickname) ."&thread=".htmlspecialchars((int) $write['id'])."\">".htmlspecialchars($write['title'])."</a><br>";}
	}
 
function write_topics(){
	$nickname = $_SESSION['nickname'];
	(int) $thread_id = (int) $_GET['thread'];
	$sql1 = "SELECT * FROM topics WHERE thread='" . $thread_id . "'";
	$query1 = mysql_query($sql1) or die(mysql_error());
	while($write1 = mysql_fetch_array($query1)){
		echo "<a href=\"write.php?user=". htmlspecialchars($nickname) ."&thread=".htmlspecialchars((int) $write1['thread']). "&topic=".htmlspecialchars((int) $write1['id'])."\">". htmlspecialchars($write1['title'])."</a><br>";
		}
 
	(int) $test = (int) $_GET['thread'];
		if(!empty($test)){
			 echo "";}
		else{write_threads();}
	}
function write_back(){
	$nickname = $_SESSION['nickname'];
	if(!empty($_GET['thread']) && empty($_GET['topic'])){
		echo "<a href=\"write.php?user=".htmlspecialchars($nickname)."\">Back on threads</a>";}
	}
write_back();
function write_posts(){
	$nickname = $_SESSION['nickname'];
	(int) $topic = (int) $_GET['topic'];
	if(!empty($topic)){echo "<a href=\"write.php?user=".htmlspecialchars($nickname)."&thread=".htmlspecialchars($topic)."\">Back on topics</a>";}
	$sql2 = "SELECT * FROM posts WHERE topic='". $topic ."'";
	$query2 =mysql_query($sql2) or die(mysql_error());
	while($write2 = mysql_fetch_array($query2)){
		echo htmlspecialchars($write2['author']);
		echo htmlspecialchars($write2['content']);}
 
	(int) $test1 = (int) $_GET['topic'];
		if(!empty($test1)){
			 echo "";}
		else{write_topics();}
	}
 
 
 
 
 
?>
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