- print_r: documentation ( source)
- preg_match_all: documentation ( source)
<?php
$txt = "Seats: 11;12;
Name: qqqq;wwww;
Start: Прешов, АВ Košická 2725/2
End: Мукачево, АЗ Лавковская, 1б
Date: 2019-06-22
Time: 09:40 PM";
if (preg_match_all('~(?:\G(?!^);|Seats:\s*)\K\d+~',$txt,$matches)) {
print_r($matches[0]);
}