PHP fails socket connection with Apple notification gateway

Question

Disclaimer: on SO I found many similar questions and some answers but none solved my issue.

I have this easy PHP code:

Answer 1

Some random finding from the internet which could help:

1. It may be a certificate problem. Try the stream options allow_self_signed and verify_peer to check that.

2. Try to use explicitely sslv2:// or sslv3:// ?

3. Permission problem on "/dev/urandom"