"ch" is written as "چ" in Persian (sounds like channel).
"zh" is written as "ژ" in Persian (sounds like bourgeoisie in French).
"zh" is written as "ژ" in Persian (sounds like bourgeoisie in French).
In Arabic[1], there are two close phonemes: `/dʒ/` for `ج` and `/ʃ/` for `ش`
The difference in both phonemes is minimal and are practically affricates[2] of each other (where `d` or `t` can precede a `ʒ` or a `ʃ`), so it seems these sounds are present in both Arabic and Persian.
These variations are also within the dialectal distribution of either languages. For example `ج` is pronounced `/dʒ/` in Algeria and `/ʒ/` in Morocco.
0: https://en.wikipedia.org/wiki/Help:IPA/Persian