Павел Новиков

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
      <script src="assets/js/jquery.steps.min.js"></script>
      <script src="assets/js/main.js"></script>

- Сохранения записей между сеансами (в local storage). Соответственно, здесь сохраняем данные и о самих пользователях, и об их контактах.

<?php
$a = '
0
1
2
3
4
5
6
7
8
9';

$b = '
5
4
3
2
1';

$arrayA = str_split(preg_replace('/\s+/', '', $a));
$arrayB = str_split(preg_replace('/\s+/', '', $b));
$diff = array_diff($arrayA, $arrayB);
print_r($diff);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'www.someapi.com?param1=A&param2=B');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-type: application/json')); // Assuming you're requesting JSON
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$response = curl_exec($ch);

// If using JSON...
$data = json_decode($response);

$('#link').on('click', function (e) {
                        e.preventDefault();
                        var targetLink = $(this).attr('href');

                        setTimeout(function () {
                                    window.location.replace(targetLink)
                                }, 2000
                        );
                    })

$builder
            ->add('citySelector', ChoiceType::class, [
                'choices' => array_flip($this->getCitiesArray()),
                'expanded' => false,
                'multiple' => false,
                'attr' => [
                    'class' => 'form-control'
                ],
                'label' => 'warehouse_filter_form.city',
                'placeholder' => 'warehouse_filter_form.any',
                'required' => false,
            ])

private function getCitiesArray()
    {
        $cities = [];

        $results = $this->em->createQueryBuilder()
            ->select('l.addressCity')
            ->from(Location::class, 'l')
            ->groupBy('l.addressCity')
            ->orderBy('l.addressCity', 'ASC')
            ->getQuery()
            ->getArrayResult();

        foreach ($results as $result) {
            if (!in_array($result['addressCity'], $cities)) {
                $cities[$result['addressCity']] = $result['addressCity'];
            }
        }

        return $cities;
    }