Update links to HTTPS

[bhubbard]

There are many links within WordPress that should be updated to HTTPS by default. You can see a quick example here:

​https://github.com/WordPress/WordPress/search?utf8=%E2%9C%93&q=http%3A%2F%2F

A few example of domain links that can be updated to https:

• Links to ​http://tools.ietf.org/
• Links to ​http://jquery.org/
• Links to ​http://www.tinymce.com
• Links to ​http://www.w3.org/
• etc

[netweb]

Previously #27115, and to note that *ALL* of the below URLs already redirect to their HTTPS enabled site automatically:

A few example of domain links that can be updated to https:

• Links to ​http://tools.ietf.org/
• Links to ​http://jquery.org/
• Links to ​http://www.tinymce.com
• Links to ​http://www.w3.org/
• etc

Also:

• ​http://httpd.apache.org
• ​http://www.mysql.com/
• ​http://php.net/ & ​http://www.php.net/ -> Both redirect to ​https://secure.php.net/)

[johnpgreen]

If @bhubbard isn't interested, I would like to tackle this issue as my first bug.

[bhubbard]

@johnpgreen Feel free to give it a go.

[johnpgreen]

First attempt at patch attached.

I searched the source code for the string "​http://" and replaced with the resolved "​https://" URL when they both resolved to identical pages. This includes standardizing all PHP.net references to the "secure" subdomain.

I avoided making any modifications to URLs that returned 404 errors on both http and https.

I also avoided touching any files that seemed to be included libraries (i.e. SimplePie, ID3), as I assume that's up to their respective maintainers.

[netweb]

Awesome @johnpgreen, patch looks great, nice work on the URLs you didn't change +1

A couple of issues if you could refresh your patch with these changes please:

• Remove the harvard.edu HTTPS change and leave it as HTTP, there are mixed content warnings and even though the certificate appears valid I'm not confident in the hardvard.edu HTTPS configuration I see, anyone else with opinions? See ​https://cyber.law.harvard.edu

• Changehttp://php.net/date to https://secure.php.net/date, they both redirect to the same location https://secure.php.net/manual/en/function.date.php and the "short url" helps keep comment line lengths shorter.

• I don't think we should use any shortlink services for URLs in WordPress, change https://bit.ly/89QxZA to https://en.wikipedia.org/wiki/Motion_Picture_Association_of_America_film_rating_system

[johnpgreen]

Attached is a refreshed patch, with:

• the Harvard update undone

• the shorter version of the PHP date() URL

• the expanded version of the Wikipedia URL (which I was surprised to find as a shortened URL in the first place).

[netweb]

36993.2.patch​ looks good @johnpgreen, thanks +1

[peterwilsoncc]

In 37674:

DOCS: Replace HTTP links with HTTPS.

Replaces unsecure links in documentation and translator comments with their secure versions.

Props johnpgreen, netweb

Fixes #36993

[SergeyBiryukov]

In 38239:

Docs: Replace some more HTTP links with HTTPS.

Props johnpgreen.
Fixes #37622. See #36993.