<?php 
    if($_POST['topic']){
        $con = mysqli_connect('localhost','root','','account');
        if(!$con)
            die('ERROR: '. mysqli_error());
        
        $sql = "UPDATE forum SET topic = '".$_POST['topic']."' WHERE id = ".$_POST['topic_id'];
        
        $result = mysqli_query($con, $sql);
        if(mysqli_affected_rows($con))
            $status = 1;
        else
            $status = 0;
        
        echo json_encode(array('status' => $status));
        
        mysqli_close($con);
    }
?>