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What is this for the function pack() in php?
I can pack a hex string with high and low nibble what is the difference?
Thanks
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Nibble is half a byte (0-15, or one hex digit). Low nibble are the bits 0-3; high nibble are bits 4-7.
Nibble is to take small bites, or to eat little snacks between meals, or to wear away a little bit at a time. When you take just a few small bites of cheese, this is an example of when you nibble. When you grab a piece of an apple, then a few cookies as a snack between meals, this is an example of a nibble.
Eight bits make up a byte, and four bits are called a nibble. The largest unsigned nibble is 1111 = 15, and the largest unsigned byte is 11111111 = 255.
Common binary number lengths From there, a group of 4 bits is called a nibble, and 8-bits makes a byte. Bytes are a pretty common buzzword when working in binary. Processors are all built to work with a set length of bits, which is usually this length is a multiple of a byte: 8, 16, 32, 64, etc.
Nibble is half a byte (0-15, or one hex digit). Low nibble are the bits 0-3; high nibble are bits 4-7.
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