It seems like there are 40 different ways to sanitize data, input and output, on the data validation site:
http://codex.wordpress.org/Data_Validation
This is confusing, because it seems many of them are repetitive, but it's not clear which.
Could somebody give a definite answer on this: if I want to input and output data that is not supposed to have html which of these functions should I use?
Please specify on both the input validation and output validation stages separately.
Thanks in advance.