This example uses the [[APPEND_FILE]] shortcode to store the form response in a data file called comments.txt located in the node’s root folder. Note that the \t creates a tab delimiter and the \n creates a new line in output string to be stored. To overwrite previous content use [[WRITE_FILE]] instead.
Create a node and paste this following code into it’s landing page editor. Goto the node’s address and test with browser.
[[IF_SUBMITTED]] [[POST:Name]] [[POST:Message]] [[INITIALIZE:submitted_entry|"$Name\t$Message\t\n"]] [[INITIALIZE:filename|"comments.txt"]] [[APPEND_FILE:submitted_entry|filename]] Thank you [[PRINT:Name]] , your comment has been added to the file.[[cr]] [[END_IF]] Here is the comment form.[[cr]][[hr]] [[FORM:#this]] [[INPUT:Name|Enter Your Name]] [[INPUT:Message|Enter Your Comment]] [[SUBMIT:Save]] [[END_OF_FORM]]