Convert signed integer to unsigned integer in PHP

This article describes how to convert signed integers into unsigned integers in PHP. the conversion method is very simple. This article describes the conversion method directly, for more information, see the ing algorithm between the six-character and the ID in a short address project. when the ID exceeds 2147483647, the ing ID of a six-character short address is converted into a signed integer.

The code is as follows:

ID> six-character> ing ID

ID: 2147483644> TfffVQ> 2147483644
ID: 2147483645 & gt; efffVQ & gt; 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 integer to unsigned integer: (float) sprintf ('% u', $ id)

PHP official website information on integer: http://php.net/manual/zh/language.types.integer.php