CODE EXAMPLE FOR PHP

Failed to connect to github.com port 443: Connection timed out

/* In Depth Answers @StackOverFlow :
https://stackoverflow.com/questions/18356502/github-failed-to-connect-to-github-443-windows-failed-to-connect-to-github  

Option 1 for Windows users : Restart your machine

Option 2 : Try unsetting your proxy. In my case this worked. */
git config --global --unset https.proxy