Backend

<?php
add_action("wp_ajax_get_json_users", "get_json_users");
add_action("wp_ajax_nopriv_get_json_users", "get_json_users");



function get_json_users(){

            $count = count_users();
            $totalUsers = $count['avail_roles']['pmpro_role_1'] + $count['avail_roles']['pmpro_role_2'] + $count['avail_roles']['pmpro_role_3'];

            $orderVar = $_GET['order'];

            switch ($orderVar[0]['column']) {
                case 0:
                    $orderCol = 'last_name';
                    break;
                case 1:
                    $orderCol = 'last_name';
                    break;
                case 2:
                    $orderCol = 'qb_style';
                    break;
                case 3:
                    $orderCol = 'class_of';
                    break;
                case 4:
                    $orderCol = 'height_feet';
                    break;
                case 5:
                    $orderCol = 'weight';
                    break;
                case 6:
                    $orderCol = 'high_school';
                    break;
                case 7:
                    $orderCol = 'hometown'. ', '.'hometown_state';
                    break;
                case 8:
                    $orderCol = 'star_rating';
                    break;
                case 9:
                    $orderCol = 'player_score';
                    break;
                default:
                    $orderCol = 'last_name';
                    break;
            }



            $args = array (
                //Get Premium Users
                'orderby' => 'meta_value',
                'meta_key' => $orderCol,
                'order' => strtoupper($orderVar[0]['dir']),
                'number' => $_GET['length'],
                'offset' => $_GET['start']
            );

            // The User Query
            $user_query = new WP_User_Query( $args );

            $players = array();
            $i=0;
            foreach ($user_query->results as $player) {
                    $home = home_url().'/user-profile/';
                    $with_query = add_query_arg('userid', $player->ID, $home);
                    $player_name =  $player->first_name . ' ' . $player->last_name;

                    if(!$player->image){
                        update_user_meta($user->ID, 'image', get_template_directory_uri().'/assets/img/generic.png');
                    }

                    if(!$player->star_rating){
                        $player_stars = 'N/A';
                    }
                    else{
                        $player_star_rating = $player->star_rating;
                        if($player_star_rating <= 5 && $player_star_rating > 4){
                            $player_stars = '<i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i>';
                        }
                        elseif($player_star_rating <= 4 && $player_star_rating > 3){
                            $player_stars = '<i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i>';
                        }
                        elseif($player_star_rating <= 3 && $player_star_rating > 2){
                            $player_stars = '<i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i>';
                        }
                        elseif($player_star_rating <= 2 && $player_star_rating > 1){
                            $player_stars = '<i class="fa fa-star text-success"></i><i class="fa fa-star text-success"></i>';
                        }
                        elseif($player_star_rating <= 1 && $player_star_rating > 0){
                            $player_stars = '<i class="fa fa-star text-success"></i>';
                        }
                    }
                    if(!$player->player_score){
                        $player_score = 'N/A';
                    }
                    else{
                        $player_score = $player->player_score;
                    }
            if($player->first_name != '' && $player->first_name != NULL){
                $players[] = array(
                    '<a href="'.$with_query.'">'.$player_name.'</a>',
                    '<a href="'.$player->image.'" rel="lightbox" title="'.$player_name.'"></a><img src="'.$player->image.'" alt="'.$player->last_name.' Quarterback Profile" height="75" width="75" class="img-thumbnail">',
                    $player->qb_style,
                    $player->class_of,
                    $player->height_feet.'&#39; '.$player->height_inches.'"',
                    $player->weight,
                    $player->high_school,
                    $player->hometown.' , '.$player->hometown_state,
                    $player_stars,
                    $player_score
                );
                }
              }


            //print_r($players);
             $output['recordsTotal'] = $totalUsers;
             $output['recordsFiltered'] = $totalUsers;
             $output['data'] = $players;

wp_send_json( $output );
    exit();
//echo json_encode($output);

}
 ?>