When I input data such as : Œ, œ, Ÿ, … , €, ≤, ≥, ∞, ≈, ≠, – , — , ‐ , ‑ , ‹ ›, “ ”, ‘ ’
And then try to access data from the $_REQUEST[‘some_value’] I get this as my output

¼, ½, ¾,  … , ¤,  ≤, ≥, ∞, ≈, ≠, – , — , ‐ , ‑ , ‹ ›,  “ ”, ‘ ’

What exactly is happening here?