Need help how do i know the Low Byte

PHP
1

Hi, Can anyone help me on this I am not familiar on this in Php on getting the Low Byte.

056A

how do I know that 6A is the low byte ?can you help me on this please.

Thank you in advance.

2

Because the pair is the rightmost digits?

3

does the low byte always in the rightmost?

4

Does this help?
https://www.inkling.com/read/arduino-cookbook-michael-margolis-2nd/chapter-3/recipe-3-14

5

XXYY

XX is the high byte
YY is the low byte

You can have more than two bytes as a value of a variable, so the low byte is always the rightmost byte.

6

Is this a big / little endian question? I found this "PHP’s string type is an 8-bit binary string, a char sequence. It has no endianness. Thus for the most part endianness is a non-issue in PHP." here http://stackoverflow.com/questions/9744904/how-to-get-the-endianness-type-in-php if that’s any use.

Where is 056A coming from?