PHP: Simple, Validate if string is hex?
- by oni-kun
I have no clue how to validate this string. I am simply supplying an IV for an encryption, but can find no "is_hex()" or similar function, I can't wrap my head around it! I read on a comment in the php documentation (user contrib. notes) this:
if($iv == dechex(hexdec($iv))) {
//True
} else {
//False
}
But that doesn't seem to work at all.. It only says false.
If it helps my input of my IV would be this:
92bff433cc639a6d
