PHP Forms Submit a large number of data loss resolution _php Tips

Recently in the project, there is a strange phenomenon, there is a large form with thousands of input, the time to submit, always find the post data incomplete, at the beginning of the suspect is the HTML form name conflict, ruled out.
Then, on the Internet to find a bunch, php.ini post_max_size and upload_max_filesize are set a great value, no use, nginx client_max_body_size 500m; Added to such a large value, also useless.
Finally, Google to approach: the original PHP from 5.3.9 began to add a variable max_input_vars to limit the number of submitted forms, really no language.

This value is 1000 by default and cannot meet the requirement of more than 1000 entries, so add a larger value to the php.ini:
Max_input_vars = 5000
After the change restart Apache, finally all normal!