venomous0x/WhatsAPI — pull request #649 by sbalgas (2014-03-28 23:07:34+00:00)
Title: This function extracts the phone number.

/**
* This function extracts the phone number.
*
* @param string $from
* The remitter delivered by WHATSAPP example 1234567890@s.whatsapp.net
*
* @return string
* Returns the number of phone cleanly.
*
**/