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There are some basic components of codeigniter which are important in codeigniter.some basic component of codeigniter
config.php file are a importent file of codeigniter . this file use for basic configretion setting like base_url setting,website language setting,charset,hooks management,session related setting,timezone setting and more
controller are important entity of codeigniter. The controller is used to write business logic in the codeigniter.user can direct communicate with controller in codeigniter . and controller can communicate model and view
model use for write backend query and database logic
View use for display data on user screen
routing are a importent part of any web application