gistfile1.txt

Radar - static indexer - basic inference and parses PHPDocs 
Sonar - abstract analyser - deep inference, runs code like an interpreter

Radar does the initial pass, passes the data off to Sonar which interprets the data with information from Radar.

All of this only works in 1 file. After all the indexing is done, a separate process should link the resulting "graphs" together
and report any type errors / non existing functions or class errors?