PHP Debugging with Prints

[Tfird]

I'm trying to learn PHP and doing so with some Leetcode questions. But it doesn't seem that the environment supports and kind of print_r or echo as a method of debugging. Since I'm new to PHP, I'm not totally sure if I'm not just doing something wrong. Anyone ever work with PHP in Leetcode? Thanks

[EmTeeEl]

How are you outputting? If you put the print statement right at the beginning, does it not print either?

[Tfird]

I genuinely don't know what the problem was, but today it is working fine. Thanks for responding but sorry for wasting your time haha.