I am facing problem during post form data. I have more than 3000 fields in my form. During post form data I am receiving only 1000 fields. I know I can use max_input_vars to increase size to 3000 or more but I am not sure about max numbers of fields is there any other option like chunk by chunk which can help me to post 100 fields at one time rather than entire block? is it a good idea to convert form fields data in json format and parse it through ajax post ?
Have you considered using jQuery to parse the form in batches and do an individual post to the processing .php file? This would allow you break the total number of fields into manageable chunks.