Some additional repos to consider:
PHP-Config — This PHP class can be used to read configuration options from ini files
niant/Config — Configuration class to store key/value pairs
thinlog.php — an extremely lightweight (18-line) logging class. as you hack, tag your log messages by feature area, then turn tags on/off in the config
Once a week...... I send out a list of most interesting PHP libraries and apps.
Want to get it?