Historically, phpcheckstyle supported level names in upper case. We just upgraded to the latest version and "INFO", "WARNING", "ERROR" are no longer supported and must be specified with rules in custom configs in lower case. Rather than change many files across many projects, I made a small tweak which may also benefit others that don't wish to edit old configs. For your perusal: https://github.com/PHPCheckstyle/phpcheckstyle/pull/49
Historically, phpcheckstyle supported level names in upper case. We just upgraded to the latest version and "INFO", "WARNING", "ERROR" are no longer supported and must be specified with rules in custom configs in lower case. Rather than change many files across many projects, I made a small tweak which may also benefit others that don't wish to edit old configs. For your perusal: https://github.com/PHPCheckstyle/phpcheckstyle/pull/49