PHP: How to convert bigint from int to string?

Question

I want to be able to convert big ints into their full string derivatives.

For example.

$bigint = 9999999999999999999;
$bigint_string = (string) $bigi         


        

Answer 1

Use strval().

echo strval($bigint); // Will output "99999999999999999"

EDIT: After a slightly better research (> 5000ms), I see that it is impossible to echo numbers to that precision, because PHP cannot save an integer of that size (depends on OS bit system, 32/64). Seems like it's not possible to do it without losing precision.