amlife

Hello I Would like to create a form similar to this one http://prashant.es/labs/virtualhost-generator/ the form should provide input fields and check boxes and it should produce configuration syntax upon completion. How can I go about doing that?? can someone help? I'm familiar with html, I designed all required intput fields, however I'm not sure how I could get all of those intput variables to manipulate the code required. lets say I'm planning to re-create the example given above, how can I go about doing that? Thank you