Split a kiosk line. Join cities.

Goal

Split Nairobi,12 and echo both.

<?php
$line = "Nairobi,12";
[$city, $units] = explode(",", $line);
echo $city, PHP_EOL;
echo $units, PHP_EOL;

<?php
echo implode(" / ", ["Nairobi", "Mombasa", "Kisumu"]), PHP_EOL;

<?php
$text = "Nairobi,12\nMombasa,8";
foreach (explode("\n", $text) as $line) {
  [$city, $units] = explode(",", $line);
  echo $city, " ", $units, PHP_EOL;
}

<?php
echo str_replace(",", " · ", "Nakuru,4"), PHP_EOL;