title: Wampserver cache clearing
body: <p>I'm using wampserver for my php apps.
  And mPdf is used for generating PDF files. But here's the problem,
  even if I modify the .css file for the generated PDF file style, it won's be applied
  until I delete all the PDF files already generated for certain pages in the DATA cache folder.</p>
  
  <p>So my question is just, how often does wampserver clear its cache folder and drop the temp files?</p>