converting signed integers to unsigned integer methods in php, PHP integer _php tutorial

converting signed integers to unsigned integer methods in php, PHP integer

In a short address item, the ID of a six-bit short address map becomes a signed integer, based on the six-bit character-to-ID mapping algorithm, when the ID exceeds 2147483647.

Copy the Code code as follows:
ID > Six-bit character > Mapping ID

id:2147483644 > Tfffvq > 2147483644
id:2147483645 > Efffvq > 2147483645
id:2147483646 > Nfffvq > 2147483646
id:2147483647 > Ffffvq > 2147483647
id:2147483648 > Nnnnnu >-2147483648
id:2147483649 > Dnnnnu >-2147483647
id:2147483650 > Rnnnnu >-2147483646

You need to convert signed integers to unsigned integers: (float) sprintf ('%u ', $id)

PHP official website about the integer type information: http://php.net/manual/zh/language.types.integer.php

http://www.bkjia.com/PHPjc/1008024.html www.bkjia.com true http://www.bkjia.com/PHPjc/1008024.html techarticle In PHP, the signed integer is converted to an unsigned integer, the php integer in a short address item, according to the six-bit character and ID of the mutual mapping algorithm, when the ID of more than 2147483647, six ...

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