Fixing Textmate's PHP Commands with MacPorts PHP

For anyone else who's having trouble with include path errors when trying to run PHP-based bundle commands in Textmate like this one:

PHP Warning: require(/lib/beautify.php): failed to open stream: No such file or directory in /private/tmp/temp_textmate.4tD2ED on line 19

It looks like the problem has to do with php.ini configuration settings that ship with MacPorts (may be the production sample ini file, in particular). In order to environment variables to populate the $_ENV global that Textmate uses for settings, etc, be sure you've got the letter "E" at the front of the "variables_order" setting value, like this:

variables_order = "EGPCS"

Reluctant hat-tip to an article on Experts Exchange for this one.