Send Json Post usinig PHP

I want to send Json post using Php :

with postman :

Post 
https://11.70.20.3:2200/api/v1/messages

Content-Type: application/vnd.api+json
Accept: application/vnd.api+json

body

{"data":{"type":"messages","attributes":{"request-id":"123","brand":"OPT","sms-sender":"djezzy","originator":"OPT Sender","category":"notification","sms-recipient":"77777701","message-body":"Test message","scheduling-policy":"asap","language":"en-en"}}}

any idea how to make it with PHP ?