How can PHP handle large numbers when concatenating them?

When concatenating large numbers in PHP, it is important to ensure that the numbers are treated as strings to prevent any potential loss of precision or scientific notation. This can be achieved by explicitly casting the numbers to strings before concatenating them.

$largeNumber1 = 12345678901234567890;
$largeNumber2 = 98765432109876543210;

$result = (string)$largeNumber1 . (string)$largeNumber2;

echo $result;