Creating Drivers
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Driver Directory and File Structure
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Sample driver directory and file structure layout:

* /application/libraries/Driver_name

  * Driver_name.php

  * drivers

    * Driver_name_subclass_1.php

    * Driver_name_subclass_2.php

    * Driver_name_subclass_3.php

Note:

  In order to maintain compatibility on case-sensitive file systems,
  the Driver_name directory must be named in the format returned by
  "ucfirst()".

Note:

  The Driver library’s architecture is such that the subclasses don’t
  extend and therefore don’t inherit properties or methods of the main
  driver.
