Self-hosted tool, mainly for Notepad++/npp_exec plugin combo to HTTP redirect user to proper language manual(s) by giving extension and function name in URL.

1. Install Notepad++
2. Upload dispatch.php and manuals.php to webserver or...
3. You can also use PHP's built-in server (run php -S 127.0.0.1:5666 -t C:\PATH_TO_SCRIPT) and then URL will be http://127.0.0.1:5666/dispatch.php
4. Check if everything is working properly, e.g. by checking in browser http://HOSTNAME/dispatch.php?term=strpos&lang=php
5. Go to Plugins menu>Plugin admin... and search for NppExec, or download it from author's repo
6. After restarting N++, go to Plugins>NppExec and press F6 or choose Execute Nppexec Script...
7. In the text box paste contents of nppExecScript.txt (remember to set script URL!)
8. Click on Save and give it name (we will use it in the next point)
9. Go to Setting>Shortcut Mapper... and click on the top tab Plugin Commands. Find your script (by name you used in previous point) and set shortcut. I used NPP's standard ALT+F1.

Just save the file (for language recognition/extension), click or select the command you need to get manual for, press ALT+F1 (see installation, last point)

Figure it out :) Just set your editor to open dispatch.php?term={SELECTED_WORD}&lang={EXTENSION OR TYPE}

Four basic ways, all need editing of manual.php

1. Automatic redirect: add array element in format EXTENSION => URL{TERM} where {TERM} will be replaced with current word (e.g. 'php' => 'http://www.php.net/{TERM}')
2. Multiple manuals: add array element with nested array to make dispatch.php in format NAME => URL show multiple choices (e.g. py => ['Python3' => 'https://docs.python.org/3/search.html?q={TERM}', '3rd party' => 'https://example.com/lrn2write/{TERM}'] - this way for .py files, it will show Python3, linking to .../3/... and 3rd party linking to ...example.com/lrn2write/)
3. Aliases: just set key name to name and value to alias, (e.g. ['php3' => 'php'] will use php entry for files with extension php3. Also, if you remember this extenstion, how's your back today? ;))
4. Undefined/catch-all: set keyname for * and value to page (or pages, see 2.) which will be shown if no extension is given. This can be also used to ask semiquestions/questions, e.g. selecting 'parsing dom python' with default manuals.php you'll get links to search engine of StackOverflow and Google.

Just one, as this script just redirects you to proper manuals.

Either write an issue or create pull request.