Warning: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given

Question

1.00/5 (1 vote)

See more:

I have an errors it says

Warning: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given

What I have tried:

home.php

 <?php 
include("auth.php");

 ?>



<!DOCTYPE html>
<head>
     
        <title>Tamarga | Forum</title>
  
        <link rel="shortcut icon" href="../favicon.ico"> 
       <link rel="stylesheet" type="text/css" href="css/style.css">
       <style>
			body
				{
					background-image: url('img/indexback.jpg');
					background-attachment: fixed;
					background-size: 100% 100%;
				}
		</style>
    </head>
    <body>



	
<ul class="topnav">
 <li style="float:right"><a href="logout.php" float="right">Logout</a></li>
    <li style="float:right"><a>Hello <?php echo $_SESSION['Username']; ?>!</a></li>
    <li><a class="active" href="#home">Tamarga Forum</a></li>
    <li><a href="#home">Home</a></li>



</ul>

  <br> <br>
<center>
<div class="btn-group">
  <button class="button">Post Your Comments</button>
  </div>

</center>




<center>

<br>
<table>
<tr>
    <th>Category</th>
    <th>Description</th>
    </tr>


<?php

include 'dbconnect.php';
$sql="SELECT cat_name,cat_desc FROM tblcategories";

$query=mysql_query($sql);
while ($users=mysql_fetch_assoc($query)){
    echo "<tr>";
    echo "<td>".$users['cat_name']."</td>";
    echo "<td>".$users['cat_desc']."</td>";
    echo "</tr>";

}
?>
</table>
   </center> 
     </div>
    </body>
</html>

Posted 6-Mar-17 2:32am

Jim Clinton

Updated 3-Jul-20 10:45am

Add a Solution

Comments

[no name] 6-Mar-17 8:41am

Looks to me that your query result is not a boolean value that you while expects to have.

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Peter Leow · Answer 1 · 2017-03-06T02:47:00

Some error must have occurred whele querying the database, you can get it to tell by adding a error handling like this:

$query=mysql_query($sql);

if (!$query){
   die('Invalid query: '.mysql_error());
}

while ($users=mysql_fetch_assoc($query)){
  //omitted
}

However, take note[^] that:

Quote:
This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used.

Jochen Arndt · Answer 2 · 2017-03-06T02:54:00

The return value of mysql_query is a mixed type. It is a boolen value or a resource upon success for specific query types.

When an error occured, the return value is boolean false which probably happened here.

Solution:
Check the return value before fetching results:

PHP

if ($query = mysql_query($sql)) {
    while ($users=mysql_fetch_assoc($query)){
        // ...
    }
} else {
    // Report error
}

Richard MacCutchan · Answer 3 · 2017-03-06T02:47:00

Solution 1

See PHP: mysql_query - Manual[^].

Posted 6-Mar-17 2:47am

Richard MacCutchan

Warning: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given

3 solutions

Solution 2

Solution 3

Solution 1

Add your solution here

Preview 0