Install a web server and enable PHP support. I used a Raspberry Pi and Lighttpd for my web server.  If one plans to go the same route, here's the commands to enter on the terminal:

apt-get install lighttpd php-cgi
lighty-enable-mod fastcgi
lighty-enable-mod fastcgi-php
service lighttpd force-reload

 The directory structure that I created was:

/var/www/html(web server document root)/sensorlogging

under the sensorlogging directory

php directory

logfiles directory

The ownership of the logfiles directory needs to be changed so that lighttpd can read-write contents:

chown www-data logfiles

Under the php directory and drop in the rsensor_dht22.php file.  This file can be edited to match the directory structure used if it's different from the example.  in the logfiles directory create a file named "rsensor_dht22.txt" and in the file put "enable" to enable logging.

Instructions can be found here:https://docs.micropython.org/en/latest/esp8266/tutorial/intro.html

Also be sure to enable WebREPL and set a password

Connect the DHT22 sensor.  The + should go the the 3.3V pin and the - to the ground pin.  The middle pin should connect to the pin labeled  D11/MOSI/D7 on the WeMos D1 board.

Find out the IP address of the ESP8266 board. This can be discovered by either viewing the dhcp leases list on the router or by querying the ESP8266 board itself with the serial REPL.

After you get the IP address go to http://micropython.org/webrepl/ enter the IP address of your board and click connect. Enter the password that you created in step 1.  Edit  the esp8266_dht22.py file with the IP address of the web server to be used and if necessary, the rest of the URL if the directory structure differs.  After doing that, send the file to the device and on the WebREPL terminal enter this:

import esp8266_dht22
esp8266_dht22.go()

If all goes well in the logfiles directory, the file "rsensor_dht22.csv" should show up after some time with readings. If not check the webserver error log file and the WebREPL browser window for any errors.  If all is going well the WEBREPL window can be closed.