<form action="post_save.php" method="GET">
        <div class="row">
            <div class="col-md-9">
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Input Title" name="title">
                </div>

                <textarea name="postEditor" id="postEditor"></textarea>
                <script>
                    CKEDITOR.replace( 'postEditor' );
                    CKEDITOR.config.height = 400;
                </script>
            </div>

            <div class="col-sm-3">
                <div id="formAction" data-children=".item">
                    <div class="item form-action">
                        <a class="form-action-menu" data-toggle="collapse" data-parent="#formAction" href="#kategori" aria-expanded="true" aria-controls="kategori">
                            Kategori</a>
                        <div class="dropdown-divider"></div>
                        <div id="kategori" class="collapse show" role="tabpanel">
                            <div class="item">
                                <select class="form-control form-control-sm">
                                    <option value=""> ----- Pilih Kategori ----- </option>
                                    <?php
                                    $qkategori  = mysqli_query($koneksi, "SELECT * FROM kategori");
                                    while($dkat=mysqli_fetch_assoc($qkategori)){
                                    ?>
                                    <option value="<?php echo $dkat['kategori']; ?>"><?php echo $dkat['kategori']; ?></option>
                                    <?php } ?>
                                </select>
                                <a href="addkategori.php">+ Tambah Kategori</a>
                            </div>
                        </div>
                    </div>
                    <br>

                    <div class="form-action">
                        <h6>Action</h5>
                        <div class="dropdown-divider"></div>
                        <button type="submit" class="btn btn-primary" value="Publish">Publish</button>
                        <button type="submit" class="btn btn-secondary" value="Save">Save as Draft</button>
                    </div>
                </div>
            </div>
        </div>
    </form>