How to organize applications ?

Give the directory organization such as..
wwwroot/
index.php
backend.php
assets/
images/
js/
protected/
config/
main.php
components/
controllers/
models/
views/
runtime/
backend/
config/
main.php
components/
controllers/
models/
views/
runtime/
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Isoftzone- e-Commerce App Development Company

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