codeignitor user guide

Db ralated function :

http://codeigniter.com/user_guide/database/index.html
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form validation rule function :

http://codeigniter.com/user_guide/libraries/form_validation.html

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jquery form validation rule :

http://docs.jquery.com/Plugins/Validation/validate#toptions

http://docs.jquery.com/Plugins/Validation

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