why this isn't working?

Craptacular · May 17, 2012

I know this is something I am just overlooking, but please help. I can't seem to get the selected item in the dropdownlist that is being populated from a database to be deleted.

Here is the add_delete_users.php

<?php

require('config.php');

$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAMETWO);


if (mysqli_connect_errno()) {
   die("Connection Failed");
}

if (isset($_GET['pageno'])) {
      $pageno = $_GET['pageno'];
      } else {
            $pageno = 1;
   } // if

?>

<!DOCTYPE html>
<html>
<head>
<title>Manage Users</title>
<link type="text/css" rel="stylesheet" href="/css/layout.css" />
<link type="text/css" rel="stylesheet" href="/css/admin.css" />
<!--[if lte IE 7]><link rel="stylesheet" href="/css/adminie7.css" type="text/css" media="screen" /><![endif]-->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="/js/contentArea.js"></script>
<script type="text/javascript">
$(document).ready(function() {

  $('#content .row:odd').addClass('odd');

  $('#content .row:even').addClass('even');
});
</script>

</head>
<body id="index">
<div class="container-12">
<h1>Manage Users</h1>
<div id="content">
<ul id="statuses">
<li <?php if ($status === "") {echo "class=\"current_page\"";}?>><a href="index.php?&status=" id="nav-new">New</a></li>
<li <?php if ($status === "assigned") {echo "class=\"current_page\"";}?>><a href="index.php?&status=assigned" id="nav-assigned">Assigned</a></li>
<li <?php if ($status === "completed") {echo "class=\"current_page\"";}?>><a href="index.php?&status=completed" id="nav-completed">Completed</a></li>
<li><a href="bought.php">Bought</a></li>
<li class="current_page"><a href="add_delete_users.php">Users</a></li>
</ul>
<div class="clear"></div>

<?php
         $sql = "SELECT * FROM users";
         $result = mysqli_query($mysqli, $sql) or trigger_error("SQL", E_USER_ERROR);
         while ($row = mysqli_fetch_array($result)) {                     
               $name = $row['name'];
               $options.="<OPTION VALUE=". $name .">". $name ."</option>";
         }
         echo"<lable><strong>Delete User</strong></lable><form class=\"delete-form\" method=\"post\" action=\"delete_user.php\"><select name=\"user_name\" id=\"user_name\">\n" . $options . "</select>
         <input type=\"submit\" value=\"&#45; Delete User\" /></form><br /><br />";
         
         echo"<lable><strong>Add User</strong></lable><form class=\"add-form\" method=\"post\" action=\"add_user.php\">
         <input type=\"hidden\" name=\"user_id\" value=\"\" /><br />
         <lable for=\"user_name\">User Name: </lable><input type=\"text\" name=\"user_name\" value=\"\" /><br />
         <lable for=\"email\">Email: </lable><input type=\"text\" name=\"email\" value=\"\" /><br />
         <input type=\"hidden\" name=\"password\" value=\"2f0727a8fd0c695e52bfa79a97b6c08ab418c1db\" />
         <lable for=\"name\">Name: </lable><input type=\"text\" name=\"name\" value=\"\" /><br />
         <input type=\"hidden\" name=\"privileges\" value=\"admin\" /><br />
         <input type=\"submit\" value=\"&#43; Add User\" /></form>";
         
         
         
         
mysqli_close($mysqli);            
               
?>

</div>
</div>
</div>
</body>
</html>

and here is the delete_user.php that is being called after the user presses the delete button.

<?php
require('config.php');       
$user_name = ($_POST['options']); 
       
// Connect to Database to store information
       
$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAMETWO);

if (mysqli_connect_errno()) {
   printf("Connect Failed: %s\n", mysqli_connect_error());
} else {
   $sql = "DELETE FROM users WHERE name = $user_name";
   $res = mysqli_query($mysqli, $sql);

   echo "$user_name has been deleted!<br />";
   echo "<a href=\"add_delete_users.php\">Go back to Manage more users</a><br /> 
   <a href=\"index.php?&status=\">Go back to the main page</a><br />";
   
   mysqli_close($mysqli);
}

// End Database interactions



?>

Go easy on me. At this point my brain is a bit fried... I just need someone else's eyes on it at this point.

Thanks in advance!

Barand · May 17, 2012

Your select has name "user_name", not "options", therefor the username will be in $_POST['user_name']

Craptacular · May 17, 2012

Okay. I did that, and it is showing the echo but isn't actually deleting it from my db...

Barand · May 17, 2012

Should be

DELETE FROM users WHERE name = '$user_name'

Note the quotes around $user_name

Craptacular · May 17, 2012

Nope... Still not working. :'(

Barand · May 17, 2012

What does mysql_error($mysqli) return?

Craptacular · May 18, 2012

What does mysql_error($mysqli) return?

It doesn't return anything. BUT because I was fried yesterday, after you told me to do the single quotes around the var, I didn't notice it was actually working!!! I noticed thins morning when I go to work and tested out the mysqli_error($mysqli). SO, thank you VERY much! I knew it was something simple I just wasn't able to see.... As usual!

Thanks again, Barand!

Craptacular · May 18, 2012

I spoke too soon... It worked and then without changing any of the code, it stopped working. Very curious, no?

mrMarcus · May 18, 2012

Please post your updated code.

Craptacular · May 18, 2012

delete_user.php is the only one I updated:

<?php
require('config.php');       

// Connect to Database to store information
       
$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAMETWO);

$names = mysqli_real_escape_string($mysqli, $_POST['user_name']); 

if (mysqli_connect_errno()) {
printf("Connect Failed: %s\n", mysqli_connect_error());
} else {
$sql = "DELETE FROM users WHERE user_name = '$names' ";
$res = mysqli_query($mysqli, $sql);

echo "$names has been deleted!<br />";
echo "<a href=\"add_delete_users.php\">Go back to Manage more users</a><br /> 
<a href=\"index.php?&status=\">Go back to the main page</a><br />";

mysqli_close($mysqli);
}

// End Database interactions



?>

But here is the form page as well...

<?php

require('config.php');

$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAMETWO);


if (mysqli_connect_errno()) {
die("Connection Failed");
}

if (isset($_GET['pageno'])) {
   	$pageno = $_GET['pageno'];
	} else {
   			$pageno = 1;
} // if

?>

<!DOCTYPE html>
<html>
<head>
<title>Manage Users</title>
<link type="text/css" rel="stylesheet" href="/css/layout.css" />
<link type="text/css" rel="stylesheet" href="/css/admin.css" />
<!--[if lte IE 7]><link rel="stylesheet" href="/css/adminie7.css" type="text/css" media="screen" /><![endif]-->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="/js/contentArea.js"></script>
<script type="text/javascript">
$(document).ready(function() {

  $('#content .row:odd').addClass('odd');

  $('#content .row:even').addClass('even');
});
</script>

</head>
<body id="index">
<div class="container-12">
<h1>Manage Users</h1>
<div id="content">
<ul id="statuses">
<li <?php if ($status === "") {echo "class=\"current_page\"";}?>><a href="index.php?&status=" id="nav-new">New</a></li>
<li <?php if ($status === "assigned") {echo "class=\"current_page\"";}?>><a href="index.php?&status=assigned" id="nav-assigned">Assigned</a></li>
<li <?php if ($status === "completed") {echo "class=\"current_page\"";}?>><a href="index.php?&status=completed" id="nav-completed">Completed</a></li>
<li><a href="bought.php">Bought</a></li>
<li class="current_page"><a href="add_delete_users.php">Users</a></li>
</ul>
<div class="clear"></div>

<?php
		$sql = "SELECT * FROM users";
		$result = mysqli_query($mysqli, $sql) or trigger_error("SQL", E_USER_ERROR);
		while ($row = mysqli_fetch_array($result)) {							
				$name = $row['name'];
				$options.="<OPTION VALUE=". $name .">". $name ."</option>";
		}
		echo"<lable><strong>Delete User</strong></lable><form class=\"delete-form\" method=\"post\" action=\"delete_user.php\"><select name=\"user_name\" id=\"user_name\">\n" . $options . "</select>
		<input type=\"submit\" value=\"&#45; Delete User\" /></form><br /><br />";

		echo"<lable><strong>Add User</strong></lable><form class=\"add-form\" method=\"post\" action=\"add_user.php\">
		<input type=\"hidden\" name=\"user_id\" value=\"\" /><br />
		<lable for=\"user_name\">User Name: </lable><input type=\"text\" name=\"user_name\" value=\"\" /><br />
		<lable for=\"email\">Email: </lable><input type=\"text\" name=\"email\" value=\"\" /><br />
		<input type=\"hidden\" name=\"password\" value=\"2f0727a8fd0c695e52bfa79a97b6c08ab418c1db\" />
		<lable for=\"name\">Name: </lable><input type=\"text\" name=\"name\" value=\"\" /><br />
		<input type=\"hidden\" name=\"privileges\" value=\"admin\" /><br />
		<input type=\"submit\" value=\"&#43; Add User\" /></form>";




mysqli_close($mysqli);				

?>

</div>
</div>
</div>
</body>
</html>

Thanks

Barand · May 18, 2012

$sql = "DELETE FROM users WHERE user_name = '$names' ";
$res = mysqli_query($mysqli, $sql);
echo "<pre>$sql</pre>" . mysqli_error();

What does that give?

mrMarcus · May 18, 2012

Edit: misread code.

Tip: only pull from a table what you will be using in your script. For example:

$sql = "SELECT * FROM users";

is overkill when you only need to access `name`. Revise, and subsequently keep in mind for future queries, to the following:

$sql = "SELECT `name` FROM users";

Craptacular · May 18, 2012

$sql = "DELETE FROM users WHERE user_name = '$names' ";
$res = mysqli_query($mysqli, $sql);
echo "<pre>$sql</pre>" . mysqli_error();

What does that give?

It says:

DELETE FROM users WHERE user_name = 'Michelle'

And Michelle isn't a user_name but rather the name! Silly!

mrMarcus · May 18, 2012

This is why error handling is crucial. Use it always on development systems.

Craptacular · May 18, 2012

I have updated my code to:

delete_user.php:

<?php
require('config.php');       

// Connect to Database to store information
       
$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAMETWO);

$names = mysqli_real_escape_string($mysqli, $_POST['name']); 

if (mysqli_connect_errno()) {
printf("Connect Failed: %s\n", mysqli_connect_error());
} else {
$sql = "DELETE FROM users WHERE name = '$names' ";
$res = mysqli_query($mysqli, $sql);

echo "$names has been deleted!<br />";
echo "<a href=\"add_delete_users.php\">Go back to Manage more users</a><br /> 
<a href=\"index.php?&status=\">Go back to the main page</a><br />";

mysqli_close($mysqli);
}

// End Database interactions


?>

and add_delete_users.php to:

<?php

require('config.php');

$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAMETWO);


if (mysqli_connect_errno()) {
die("Connection Failed");
}

if (isset($_GET['pageno'])) {
   	$pageno = $_GET['pageno'];
	} else {
   			$pageno = 1;
} // if

?>

<!DOCTYPE html>
<html>
<head>
<title>Manage Users</title>
<link type="text/css" rel="stylesheet" href="/css/layout.css" />
<link type="text/css" rel="stylesheet" href="/css/admin.css" />
<!--[if lte IE 7]><link rel="stylesheet" href="/css/adminie7.css" type="text/css" media="screen" /><![endif]-->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="/js/contentArea.js"></script>
<script type="text/javascript">
$(document).ready(function() {

  $('#content .row:odd').addClass('odd');

  $('#content .row:even').addClass('even');
});
</script>

</head>
<body id="index">
<div class="container-12">
<h1>Manage Users</h1>
<div id="content">
<ul id="statuses">
<li <?php if ($status === "") {echo "class=\"current_page\"";}?>><a href="index.php?&status=" id="nav-new">New</a></li>
<li <?php if ($status === "assigned") {echo "class=\"current_page\"";}?>><a href="index.php?&status=assigned" id="nav-assigned">Assigned</a></li>
<li <?php if ($status === "completed") {echo "class=\"current_page\"";}?>><a href="index.php?&status=completed" id="nav-completed">Completed</a></li>
<li><a href="bought.php">Bought</a></li>
<li class="current_page"><a href="add_delete_users.php">Users</a></li>
</ul>
<div class="clear"></div>

<?php
		$sql = "SELECT name FROM users
							WHERE (user_id <= '3' OR user_id >= '12')";
		$result = mysqli_query($mysqli, $sql) or trigger_error("SQL", E_USER_ERROR);
		while ($row = mysqli_fetch_array($result)) {							
				$name = $row['name'];
				$options.="<OPTION VALUE=". $name .">". $name ."</option>";
		}
		//This is the delete user form
		echo"<lable><strong>Delete User</strong></lable><form class=\"delete-form\" method=\"post\" action=\"delete_user.php\"><select name=\"name\" id=\"name\">\n" . $options . "</select>
		<input type=\"submit\" value=\"&#45; Delete User\" /></form><br /><br />";

		//This is the add form
		echo"<lable><strong>Add User</strong></lable><form class=\"add-form\" method=\"post\" action=\"add_user.php\">
		<input type=\"hidden\" name=\"user_id\" value=\"\" /><br />
		<lable for=\"user_name\">User Name: </lable><input type=\"text\" name=\"user_name\" value=\"\" /><br />
		<lable for=\"email\">Email: </lable><input type=\"text\" name=\"email\" value=\"\" /><br />
		<input type=\"hidden\" name=\"password\" value=\"2f0727a8fd0c695e52bfa79a97b6c08ab418c1db\" />
		<lable for=\"name\">Name: </lable><input type=\"text\" name=\"name\" value=\"\" /><br />
		<input type=\"hidden\" name=\"privileges\" value=\"admin\" /><br />
		<input type=\"submit\" value=\"&#43; Add User\" /></form>";




mysqli_close($mysqli);				

?>

</div>
</div>
</div>
</body>
</html>

and it's still not working... I changed everything to reflect that I wanted to grab the name and base my SQL actions off of that data, ONLY... Arrrrg!

Illusion · May 19, 2012

Did you try delete statement on users table from CUI or PhpMyAdmin and see what is happening ?

fenway · May 19, 2012

Stop posting all of your code.

Post your queries (raw queries) and mysql_error() output.

Craptacular · May 22, 2012

Got it figured out! Thanks everyone!

Sign In

why this isn't working?

Recommended Posts

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Join the conversation

Important Information