New function: `wp_get_protocol`

[sebastian.pisula]

In many locations I can see this condition: ( is_ssl() ? 'https://' : 'http://' ). Code duplication is bad.

[dd32]

We also have set_url_scheme( 'http://example.com/' ) at our disposal too, which is probably preferential to this proposal.

[sebastian.pisula]

ooo, this is better idea :)

[swissspidy]

Closing as wontfix as we all seem to agree set_url_scheme() is to be prefered here.

[SergeyBiryukov]

Feel free to create a new ticket if there are still any is_ssl() checks in core that should be replaced with set_url_scheme().