I recently came across the PHP `cosh()` function and I'm not quite sure how it works. I would really appreciate it if someone could explain this function to me and possibly provide an example of how to use it.
To provide some context, I'm fairly new to PHP and I'm trying to learn more about the various mathematical functions it offers. I understand that the `cosh()` function is used to calculate the hyperbolic cosine, but I'm not exactly sure how it functions or what kind of inputs it expects.
Any help or insight would be greatly appreciated!