Return random hexadecimal characters in given length
random:hexadecimal(INT $length=10) : STRING
# default length is 10
random:hexadecimal()
#> "ba54ea59d6"
random:hexadecimal(20)
#> "57b5696a94b29fc5a24a"
random:hexadecimal(0)
#=> ""Copyright ©2013-2022 SunSed®. All rights reserved.