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Watersys/delete_category.php

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<?php
//This page let delete a category
include('config.php');
if(isset($_GET['id']))
{
$id = intval($_GET['id']);
$dn1 = mysqli_fetch_array(mysqli_query($var,'select count(id) as nb1, name, position from categories where id="'.$id.'" group by id'));
if($dn1['nb1']>0)
{
if(isset($_SESSION['username']) and $_SESSION['username']==$admin)
{
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<link href="<?php echo $design; ?>/style.css" rel="stylesheet" title="Style" />
<title>Delete a category - <?php echo htmlentities($dn1['name'], ENT_QUOTES, 'UTF-8'); ?> - Forum</title>
</head>
<body>
<div align="center">
<div class="header">
<a href="<?php echo $url_home; ?>"><img width="80%" src="<?php echo $design; ?>/images/logo.png" alt="Forum" /></a>
</div></div>
<div class="contentdeletecategory">
<?php
$nb_new_pm = mysqli_fetch_array(mysqli_query($var,'select count(*) as nb_new_pm from pm where ((user1="'.$_SESSION['userid'].'" and user1read="no") or (user2="'.$_SESSION['userid'].'" and user2read="no")) and id2="1"'));
$nb_new_pm = $nb_new_pm['nb_new_pm'];
?>
<div class="box">
<div class="box_left">
<a href="<?php echo $url_home; ?>">WCSF Index</a> &gt; <?php echo htmlentities($dn1['name'], ENT_QUOTES, 'UTF-8'); ?> &gt; Delete the category
</div>
<div class="box_right">
<a href="list_pm.php">Your messages(<?php echo $nb_new_pm; ?>)</a> - <a href="profile.php?id=<?php echo $_SESSION['userid']; ?>"><?php echo htmlentities($_SESSION['username'], ENT_QUOTES, 'UTF-8'); ?></a> (<a href="login.php">Logout</a>)
</div>
<div class="clean"></div>
</div>
<?php
if(isset($_POST['confirm']))
{
if(mysqli_query($var,'delete from categories where id="'.$id.'"') and mysqli_query($var,'delete from topics where parent="'.$id.'"') and mysqli_query($var,'update categories set position=position-1 where position>"'.$dn1['position'].'"'))
{
?>
<div class="message">The category and it topics have successfully been deleted.<br />
<a href="<?php echo $url_home; ?>">Go to the WCSF index</a></div>
<?php
}
else
{
echo 'An error occured while deleting the category and it topics.';
}
}
else
{
?>
<form action="delete_category.php?id=<?php echo $id; ?>" method="post">
Are you sure you want to delete this category and all it topics?
<input type="hidden" name="confirm" value="true" />
<input type="submit" value="Yes" /> <input type="button" value="No" onclick="javascript:history.go(-1);" />
</form>
<?php
}
?>
</div>
<!-- <div class="foot">
<p><b>Water Control System and Discussion Portal for Farmers</b></p>
</div> -->
</body>
</html>
<?php
}
else
{
echo '<h2>You must be logged as an administrator to access this page: <a href="login.php">Login</a> - <a href="signup.php">Sign Up</a></h2>';
}
}
else
{
echo '<h2>The category you want to delete doesn\'t exist.</h2>';
}
}
else
{
echo '<h2>The ID of the category you want to delete is not defined.</h2>';
}
?>