Public parser in php, how to deal with authorization?

Question

PHP

Hello, I received an order to write a parser, the point is that he should go to the xenfero forum to rob the topic name and all the links that are in the topic (This is not difficult to do + there is a lot of information on the Internet).
The problem is that those forums require authorization.
And then I remembered that php is a server language, that is, authorization will occur from the ip of the server where the public parser will be stored.
And if they go to the parser and want to rob two or more people, then they will all receive a ban for multiac.
How to solve this and so that authorization occurs for everyone with their ip.

Answer 1

Run the parser from your computer. Install php and run the script.

Answer 2

Write a parser as an extension for chrome, as soon as the user launches the browser, your extension freely climbs wherever it wants and uses the user's authorization on this site and just as calmly sends you information to your server