Parsing Apache error logs

Parsing Apache error logs

I'm looking for advice on parsing Apache error logs from a Linux server (the ones that have errors and warnings from PHP etc). I have separate error logs for different vhosts and I can import the error logs with SFTP through Settings -> Import Log Data. EventLog Analyzer doesn't seem to recognize error logs the same way it recognizes access logs, so I get a different application type for each error log file. What's the best practice here? Should I configure the error logs differently in Apache or is this the way it's supposed to work? Do I just need to create a custom field extractor for the error logs? Access log import and reports works fine, but I also need detailed information about PHP errors.