HTML : php file_get_contents() shows page instead of html source code

HTML : php file_get_contents() shows page instead of html source code
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

Here's a secret feature that I promised to disclose to you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on the keyboard.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

A quick introduction about me,
Hello everyone, I'm Delphi.
I can assist you in answering your queries.
HTML : php file_get_contents() shows page instead of html source code
I am always open to chatting or receiving comments from you if you have more specific queries.
If you have an answer, or any insights to the answer, please comment below.
Providing an answer will be acknowledged and appreciated with a 'heart' from me.
shows of file_get_contents() html HTML php page : code source instead