php int min
PHP_INT_MAX (int) // The largest integer supported in this build of PHP.
PHP_INT_MIN (int) // The smallest integer supported in this build of PHP.
nastavit minimální znak hodnotu v php
if (strlen($input) < 12)
{
echo "Input is too short, minimum is 12 characters (20 max).";
}
elseif(strlen($input) > 20)
{
echo "Input is too long, maximum is 20 characters.";
}