Why doesn't it output text?

Question

PHP

Good day. It should have output "test message" in the end, but it outputs "why". Why? Sorry if this is a dumb question. Thanks in advance.

$gg = [
  'тестовое сообщение'
];

$what = 'тестовое сообщение';
$test = $what;
echo $test;
if ($test == $gg) {
  echo "1";
} else {
  echo "why";
}

Answer 1

In the first case a string, in the second an array
$test == $gg[0]