Bcmath¶
For arbitrary precision mathematics PHP offers BCMath which supports numbers of any size and precision up to 2147483647 (or 0x7FFFFFFF) decimal digits, if there is sufficient memory, represented as strings.
<?php
echo bcpow(3, 40); // 12157665459056928801
echo 2 ** 40; // 1.2157665459057E+19 (a float)
?>
See also A Comprehensive Guide to the PHP BCMath Library for Arbitrary Precision Arithmetic
Related packages : krowinski/bcmath-extended
