Loop dalam loop (Update syntax v1)

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

use Ramsey\Uuid\Uuid;
use Ramsey\Uuid\Exception\UnsatisfiedDependencyException;

class Blog extends CI_Controller
{
    public function __construct()
    {
        parent::__construct();
        $this->load->helper("text");
        $this->load->model("dashboard/F-M_blog/M_blog", "d_blog", TRUE);
        $this->load->model("dashboard/F-M_tagging/M_tagging", "d_tagging", TRUE);
        $this->load->model("dashboard/F-M_kategori/M_kategori", "d_kategori", TRUE);
        $this->load->model("dashboard/F-M_blogtagging/M_blogtagging", "d_blogtagging", TRUE);
    }

    public function index()
    {
        $data["nama_tagging"]    = $this->d_tagging->show_all_tagging();
        $data["daftar_kategori"] = $this->d_kategori->showAll();
        $data["daftar_blog"]     = $this->d_blog->showAllJoin1();

        $header["title"] = "GLOFTECH | Blog";
        $this->load->view("templates/dashboard/header", $header);
        $this->load->view("templates/dashboard/sidebar");
        $this->load->view("templates/dashboard/v_blog", $data);
        $this->load->view("templates/dashboard/footer");
    }

    public function input_data()
    {
        $date = date("Y-m-d");

        // Config Upload File
        $config['max_size']      = 9000;
        $config['remove_spaces'] = TRUE;
        $config['overwrite']     = TRUE;
        $config['allowed_types'] = 'gif|jpg|png';
        $config['upload_path']   = './assets/images/blog/';

        // Initializing the Upload Class
        $this->load->library('upload', $config);

        // Setting preferences or control what is allowed to be upload based on your preferences.
        $this->upload->initialize($config);

        $file_info = $this->upload->data();
        $file_name = $file_info['file_name'];


        if($this->upload->do_upload('featured_images')){
            $file_info = $this->upload->data();
            $file_name = $file_info['file_name'];
            $data_array["featured_images"] = $file_name;
        }

        $id_tagging   = $this->input->post("id_tagging");
        $nama_tagging = $this->input->post("nama_tagging");

        $data_array = array("tanggal_publish" => $date, "featured_images" => $file_name, "isi_blog" => $this->input->post("isi_blog", TRUE), "judul_blog" => $this->input->post('judul_blog', TRUE), "id_kategori" => $this->input->post("id_kategori", TRUE));
        $sql1 = $this->d_blog->insert($data_array);
        if($sql1 === FALSE){
            // Alert warning
        } elseif ($sql1 === TRUE){
            if(is_array($id_tagging) || is_array($nama_tagging))
            {
                $sql3_success = TRUE;
                foreach ((array) $nama_tagging as $key => $value) {
                    $data_array3 = array("nama_tagging" => $value);
                    $sql3 = $this->d_tagging->insert($data_array3);
                    $sql3_success = $sql3_success && $sql3;
                }
                if($sql3_success) {
                    $sql4_success = TRUE;
                    foreach ((array) $nama_tagging as $key => $nama_taggingvalue) {
                        $sql2 = $this->d_blog->get_id_blog();
                        $sql5 = $this->d_tagging->get_id_tagging($nama_taggingvalue, $id_tagging);
                        foreach ($sql5 as $key => $value) {
                            $data_array4 = array("id_tagging" => $value["id_tagging"], "id_blog" => $sql2->id_blog);
                            $sql4 = $this->d_blogtagging->insert($data_array4);
                            $sql4_success = $sql4_success && $sql4;
                        }
                    }
                    if ($sql4_success) {
                        echo "BERHASIL";
                    }
                }
            }
        }
    }

    public function hapus_data($id_blog)
    {
        $sql = $this->d_blog->delete($id_blog);
        if($sql == FALSE){
            $this->session->set_flashdata("warning_DeleteData",  "<div class='alert alert-warning' role='alert'><span class='glyphicon glyphicon-alert'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> <b>Penghapusan data Blog gagal dilakukan.</b> Terima kasih.</div>");
            redirect(site_url("dashboard/blog"));
        }else{
            $this->session->set_flashdata("success_DeleteData",  "<div class='alert alert-success' role='alert'><span class='glyphicon glyphicon-ok'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> <b>Penghapusan data Blog berhasil dilakukan.</b> Terima kasih.</div>");
            redirect(site_url("dashboard/blog"));
        }
    }

    public function ganti_data()
    {
        // Config Upload File
        $config['max_size']      = 9000;
        $config['remove_spaces'] = TRUE;
        $config['overwrite']     = TRUE;
        $config['allowed_types'] = 'gif|jpg|png';
        $config['upload_path']   = './assets/images/blog/';

        // Initializing the Upload Class
        $this->load->library('upload', $config);

        // Setting preferences or control what is allowed to be upload based on your preferences.
        $this->upload->initialize($config);

        $data_array = array(
            "id_blog" => $this->input->post("id_blog"),
            "isi_blog" => $this->input->post("isi_blog", TRUE),
            "judul_blog" => $this->input->post('judul_blog', TRUE),
            "id_kategori" => $this->input->post("id_kategori", TRUE)
        );

        if($this->upload->do_upload('featured_images')){
            $file_info = $this->upload->data();
            $file_name = $file_info['file_name'];
            $data_array["featured_images"] = $file_name;
        }

        $sql = $this->d_blog->update($data_array);
        if ($sql === FALSE) {
            $this->session->set_flashdata("warning_UpdateData", "<div class='alert alert-warning' role='alert'><span class='glyphicon glyphicon-remove'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> Peringatan: <b>Perubahan data Blog tidak bisa dilakukan.</b> Silahkan mencoba kembali!</div>");
            redirect(site_url("dashboard/blog"));
        } elseif ($sql === TRUE) {
            $this->session->set_flashdata("success_UpdateData", "<div class='alert alert-success' role='alert'><span class='glyphicon glyphicon-ok'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> <b>Perubahan data Blog berhasil dilakukan</b>. Terima kasih.</div>");
            redirect(site_url("dashboard/blog"));
        } else {
            $this->session->set_flashdata("danger_UpdateData", "<div class='alert alert-danger' role='alert'><span class='glyphicon glyphicon-remove'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> <b>System ERROR!</b></div>");
            redirect(site_url("dashboard/blog"));
        }
    }
}