/*
PHP integers are 64‑bit on modern 64‑bit builds.
Maximum signed 64‑bit value:
9,223,372,036,854,775,807 (~9.22 × 10^18)
Exabyte sizes:
1 EiB = 2^60 = 1,152,921,504,606,846,976 bytes
1 EB = 10^18 = 1,000,000,000,000,000,000 bytes
Both values fit safely inside a 64‑bit integer.
*/
// Binary exabyte (exbibyte), using a bit shift.
// 1 << 60 = 2^60 bytes.
const EXABYTE_EIB = 1 << 60;
// Decimal exabyte (SI), using a readable numeric literal.
const EXABYTE_EB = 1_000_000_000_000_000_000;
echo "1 EiB = " . EXABYTE_EIB . " bytes\n";
echo "1 EB = " . EXABYTE_EB . " bytes\n";
/*
run:
1 EiB = 1152921504606846976 bytes
1 EB = 1000000000000000000 bytes
*/
