Sending iOS notification through a php script: 'Unable to set private key file'

Question

I have used the php script from the well known Ray Wanderlich tutorial to send push notifications during development phase. They were triggered properly after I created the

Answer 1

I have encountered the same problem, I am using 1234 as passphrase. Instead of writing $passphrase = '1234'; I have written as $passphrase = 1234; and it is working fine