Access $post variables in external php

[Lynne]

And the data will remain blank because you cannot access the $post variable at global_start - it doesn't exist there. $post is the information about the user making the post, so you will have several different $post['field5'] on the page - a different one for each $post. global_start (which is deprecated and will disappear in the future and break any products using it) is called once on the page at the beginning. It does not have any $post data available to it.