if / elseif / else.

Goal

Label a kiosk busy or quiet.

<?php
$units = 12;
if ($units >= 10) {
  echo "busy", PHP_EOL;
} else {
  echo "quiet", PHP_EOL;
}

<?php
$city = "Mombasa";
if ($city === "Nairobi") {
  echo "capital", PHP_EOL;
} elseif ($city === "Mombasa") {
  echo "coast", PHP_EOL;
} else {
  echo "other", PHP_EOL;
}

<?php
$units = 5;
echo $units >= 10 ? "busy" : "quiet", PHP_EOL;

<?php
$n = 0;
if ($n) {
  echo "truthy", PHP_EOL;
} else {
  echo "falsy", PHP_EOL;
}