Select2 With Pagination Using CodeIgniter Updated

<?php
    $pglm = $this->input->post("page_limit", TRUE);
    $page_lim = (empty($pglm) ? 10 : $pglm);
    $pg = $this->input->post("page", TRUE);
    $page = (empty($pg) ? 0 : $pg);
    $sira = $page * $page_lim;
    $search_text = (empty($this->input->post("q", TRUE)) ? '' : $this->input->post("q", TRUE));

    $this->db->select('id');
    $this->db->where('status', 'active');
    $this->db->like('state_name', $search_text);
    $this->db->from('tbl_state');
    $cnt = $this->db->count_all_results();

    $this->db->select('state_id as id, state_code, state_name as text');
    $this->db->where('status', 'active');
    $this->db->like('state_name', $search_text);
    $this->db->order_by('state_name', 'asc');
    $query = $this->db->get('tbl_state', $page_lim, $sira);
    $filteredValues = $query->result_array();

    header('Content-Type: application/json; charset=utf-8');
    $array = array(
        'items' => $filteredValues,
        'total' => $cnt // Total rows without LIMIT on SQL query
    );
    echo json_encode($array, JSON_PRETTY_PRINT);
?>

<script type="text/javascript">
    window.onload = (event) => {
        headerParams = {'Authorization':'bearer t-7614f875-8423-4f20-a674-d7cf3096290e'};
        $('#select2_state').select2({
            placeholder:'Select State',
            // minimumResultsForSearch: Infinity,
             // minimumInputLength: 3,
            //  maximumInputLength: 20,
            //  minimumResultsForSearch: 20,
            width:'100%',
            ajax: {
                url: '<?php echo base_url('select2/get_state_list'); ?>',
                dataType: 'json',
                delay: 300,
                type:'POST',
                // headers: headerParams,
                beforeSend: function (xhr) {
                    xhr.setRequestHeader('Authorization', 'TOKEN');
                },
                data: function (params) {
                    return {
                        q: params.term, // search term
                        page_limit: 10,
                        page: params.page
                    };
                },
                processResults: function (data, params) {
                    // console.log('===  Select2.php [51] ===', data.items);
                    params.page = params.page || 1;
                    return {
                        results: data.items,
                        pagination: {
                            more: (params.page * 10) < data.total
                        }
                    };
                },
                cache: true
            }
        });
    };
</script>