This is a basic PHP 7 package that basically enforces the standard number format of 2547 prrefix of Kenyan based mobile numbers. The clean method also checks for the validity of an MSISDN number if given as 07XX, 7XX or 2547XX formats. Prefixes are updated courtesy of https://en.wikipedia.org/wiki/Telephone_numbers_in_Kenya
Download the package zip, extract and run
composer install
composer require allan/msisdn
use Msisdn\Utility;
include 'vendor/autoload.php';
var_dump(Utility::channel(254720000000)); // string(9) "SAFARICOM"use Msisdn\Utility;
include 'vendor/autoload.php';
var_dump(Utility::channel("0720000000")); // int(254720000000)