Welcome!

By registering with us, you'll be able to discuss, share and private message with other members of our community.

SignUp Now!
  • Guest, before posting your code please take these rules into consideration:
    • It is required to use our BBCode feature to display your code. While within the editor click < / > or >_ and place your code within the BB Code prompt. This helps others with finding a solution by making it easier to read and easier to copy.
    • You can also use markdown to share your code. When using markdown your code will be automatically converted to BBCode. For help with markdown check out the markdown guide.
    • Don't share a wall of code. All we want is the problem area, the code related to your issue.


    To learn more about how to use our BBCode feature, please click here.

    Thank you, Code Forum.

notice undefined offset : 0 what am I missing here?

220061

Well-Known Coder
I have this error on if(mysqli_num_rows($query) > 0 )??? and I'm not seeing what the problem is can someone help me?
PHP:
<?php
session_start();
if(isset($_SESSION['unique_id'])){
    include_once "config.php";
    $outgoing_id = mysqli_real_escape_string($conn, $_POST['outgoing_id']);//outgoing = sender
    $incoming_id = mysqli_real_escape_string($conn, $_POST['incoming_id']);
    $output = "";

    $sql = "SELECT * FROM messages
            LEFT JOIN users ON users.unique_id = messages.outgoing_msg_id
            WHERE (outgoing_msg_id = {$outgoing_id} AND incoming_msg_id = {$incoming_id})
            OR (outgoing_msg_id = {$incoming_id} AND incoming_msg_id = {$outgoing_id}) ORDER BY msg_id DESC"; //huh
    $query = mysqli_query($conn, $sql);
    if(mysqli_num_rows($query) > 0 ){
        while($row = mysqli_fetch_assoc($query)){
            if($row['outgoing_msg_id' === $outgoing_id]){// if this is equal to then he is a msg sender
                $output .= '<div class="chat outgoing">
                            <div class="details">
                                <p>'. $row['msg'] .'</p>
                            </div>
                            </div>';
            }else{//he is a message reciever
                $output .= '<div class="chat incoming">
                            <img src="php/images/'.$row['img'].'" alt="">
                            <div class="details">
                                <p>'. $row['msg'] .'</p>
                            </div>
                            </div>';
            }
        }
        echo $output;
    }
    
}else{
    header("../login.php");
}
?>
 
I also see a problem in the db so what it does it that when I send a message to someone it only sends it to himself: so for example I ,user 1, send a message to user 2. it will put in the db that user 1 sends a message to user 1
1637239752697.png
 
this is the insert chat code so maybe this does the wrong thing? but idk what
Code:
<?php
    session_start();
    if(isset($_SESSION['unique_id'])){
        include_once "config.php";
        $outgoing_id = mysqli_real_escape_string($conn, $_POST['outgoing_id']);
        $incoming_id = mysqli_real_escape_string($conn, $_POST['incoming_id']);
        $message = mysqli_real_escape_string($conn, $_POST['message']);
        if(!empty($message)){
            $sql = mysqli_query($conn, "INSERT INTO messages (incoming_msg_id, outgoing_msg_id, msg)
                                        VALUES ({$incoming_id}, {$outgoing_id}, '{$message}')") or die();
        }
    }else{
        header("location: ../login.php");
    }


    
?>
 

New Threads

Latest posts

Buy us a coffee!

Back
Top Bottom