How to get whatsapp id and password:
Now a days the marketting companies are dealing with the whatsapp to send message to customers as well as other peoples.
Whats app is still did not provided and official API’s like facebook, twitter. SO we are using third party API to send and recieve whatsapp messages.

Step 3 : Enter your phonr number along with country code [Ex 9197*********] and press ” ID “button

Step 5 : Press ” Request Code ” Button, You will get the password in popup.

Check at How to send whatsapp message using PHP.