I want the attached open source python code converted to php. What this code does is analyze and strip out html to retrieve only article text. The code starts by creating a tree (similar to dom structure) and then parsing the text. I only want the parsing part to be converted to php. i.e., functions article_text_sections() and article_text() to be converted to php. I will work with you to understand your converted code and take it if I am satisfied with your explanation.
This is a very simple project with less than 100 lines of code and I don't need you to compile, execute or test the code. You only convert the code from python to php and write inline comments to help me understand the translated code. I am a php programmer and will be able to understand your code and determine if it will work just by reading the code.