<?php

    function unique_multidim_array($array, $key) {
        $temp_array = array();
        $i = 0;
        $key_array = array();

        foreach($array as $val) {
            if (!in_array($val[$key], $key_array)) {
                $key_array[$i] = $val[$key];
                $temp_array[$i] = $val;
            }
            $i++;
        }
        return $temp_array;
    }

    $finals = array();
    $car = '';
    $race_name = '';
    $divisions = '';
    $races = '';
    $pilots = array();

    if( have_rows('champ_division') ):
        while( have_rows('champ_division') ): the_row();

		// vars
        $divisions = get_sub_field('division_name');
        $races = get_sub_field('division_races');
        $pilots = array();
        $finals = array();

        echo '<h4 class="text-uppercase">'.$divisions.'</h4>'; ?>
        <table class="table champ_table" id="">

            <?php
                foreach( $races as $post): // variable must be called $post (IMPORTANT)
                setup_postdata($post);
                while ( have_rows ('race_grid')) : the_row();
                    while (have_rows('race_pilot')) : the_row();
                        $pilots[] = get_sub_field('pilot_name');
                        $finals[] = get_sub_field('final_position');
                        $penalty = get_sub_field('pilot_penaly');
                        $bestlap = get_sub_field('pilot_bestlap');
                        $warn = get_sub_field('pilot_warning'); ?>
                    <?php endwhile;
                endwhile;
            endforeach;
            wp_reset_postdata();
            $drivers = unique_multidim_array($pilots,'display_name');
            $race_id = unique_multidim_array($races,'ID');

            if (!empty($drivers)) { ?>
                <thead>
                    <tr>
                        <th>Nome do piloto</th>
                        <th>Carro</th>
                        <th>Número</th>
                        <th>Equipe</th>
            <?php } foreach( $races as $post): // variable must be called $post (IMPORTANT)
                setup_postdata($post);
                echo '<th>';
                the_title();
                echo '</th>';
            endforeach;
             echo '</tr></thead>';
            wp_reset_postdata(); ?>
            <?php
            foreach ($drivers as $driver) :
                $pid = 'user_'.$driver['ID'];
                $car = '';
                $pnumber = '';
                $team = get_field('user_team', $pid);
                while ( have_rows ('user_car', $pid) ) : the_row();
                    $car = get_sub_field('car_model');
                    $pnumber = get_sub_field('car_number');
                endwhile;
                ?>
                <tbody>
                <tr>
                    <td><?php echo $driver['display_name']; ?></td>
                    <td><?php if(!empty($car)) { echo $car->post_title;}  ?></td>
                    <td><?php echo $pnumber; ?></td>
                    <td><?php echo $team; ?></td>
                    <?php foreach( $races as $post): // variable must be called $post (IMPORTANT)
                        setup_postdata($post);
                        echo '<td>';

                            if (in_array($driver, $pilots)){
                                print_r($finals);
                                //$warn = get_sub_field('pilot_warning');
                                //print_r ($penalty);
                            }
                        echo '</td>';
                        //print_r ($group_pilots);
                    endforeach;
                    echo '</tr></tbody>';
                    wp_reset_postdata(); ?>
            <?php endforeach; //Piloto Linha ?>
            </tr>
        </tbody>

        </table>
     <?php   // IMPORTANT - reset the $post object so the rest of the page works correctly
        endwhile;// IMPORTANT - reset the $post object so the rest of the page works correctly
     endif;
?>