Thinking about rebranding

Hi, I'm full stack developer and 3rd CS student, started working at 1st year. I like to develop with PHP and Symfony but feel good also in front-end frameworks. Now I see on justjoin.it that php is daying, i mean there no so much offers for seniors like in java/c# also they are less paid so I feel like it's good time to change something but I guess none gonna pay me as much as I'm getting now as 2 year full stack dev.

Do someone had same experience?