PEAR on Windows reports "Invalid configuration directive"

Problem: After running go-pear.bat to configure PEAR on Windows you may encounter the PHP error dialog "Invalid configuration directive."
Cause: This problem happens when running modern versions of PEAR on PHP 5.2 or earlier because the quoting handling of PHP 5.2 is broken.

Solution:   To correct the issue, modify the file C:\Program Files (x86)\PHP\pear.bat. Scroll down to the :RUN section and modify the line with the PHP directive "-d include_path" as follows:

... -d "include_path=\".;%PHP_PEAR_INSTALL_DIR%\""
Save the file and re-run the "pear" command.