unhex()

Converts a String with a hexadecimal value to a Number.

unhex() converts a string with its hexadecimal number value to a number. Hexadecimal (hex) numbers are base-16, which means there are 16 unique digits. Hex extends the numbers 0–9 with the letters A–F. For example, the number 11 (eleven) in base-10 is written as the letter B in hex.

The first parameter, n, is the hex string to convert. For example, unhex('FF'), returns the number 255. If an array is passed, as in unhex(['00', '80', 'FF']), an array of numbers is returned.