php int val with decimals code example

Example 1: php number format

$num = 12345.6789;
echo number_format($num, 2, '.', '') //12345.67
echo number_format($num, 3, ',', '.') //12.345,678

Example 2: php "?int"

// ? means $count can be NULL or integer, maybe PHP >=7.4
private ?int $count