PHP: whats the total length of a post global variable?

Question

I was wondering if anybody knows the total length that a post global could be. e.g:

$_POST[\'formInput\'] = \"hello world, how long can i be?\";

Answer 1

$_POST is populated from the body of a HTTP-request. Since there are no restrictions on the size of a HTTP-request, there are no restrictions in the protocol layer. However PHP has some limitations on how much input it will read. You can control this with the ini-setting post_max_size