PHP max_input_vars

PHPs configuration value max_input_vars

When you are posting array to php with lots of elements in it, This config will determin how many of variables from array will be extracted. By default it is 1000. So if you have 1001 item in array, then only 1000 will be extracted

It is also used by function parse_str https://www.php.net/manual/en/function.parse-str.php