unexpected error message in php form (SQL syntax error)

Question

I have made a simple php cms form with database but it does not work properly when I want to submit the form with some dummy data! I don\'t know why it happens & also I adde

Answer 1

Changes

1. Use empty for check empty variable
2. Use || instead of or
3. Check validation for what you are doing. (move_uploaded_file)
4. Be careful with quotes ($post_image') - This is the bug in your code
5. Enhance mysqli_error (if (!$insert_post){)

Code

alert("Some fields are missing")';
        }
        else
        {
            if (!move_uploaded_file($image_tmp,"post_images/$post_image")) {
                echo "Move Failed";
            }
            else
            {
                $insert_query = "INSERT INTO posts (post_title,post_date,post_author,post_image,post_keywords,post_content) VALUES ('$post_title','$post_date','$post_author','$post_image','$post_keywords','$post_content')";
                $insert_post = mysqli_query($con,$insert_query);

                if (!$insert_post){
                    echo mysqli_error($con);
                }
                else
                {
                    echo '
Post has been added successfully.
';
                }
            }

        }
    }
?>