Understanding what is in PHP / JSON and getting rid of it

Hermes -24/24 Size 29 Togo touch

Guess Silver colored/Yellow gold toned steel Ø47 mm,model U0291G4 with TheWatchAgency™. Material & Measurements Model:U0291G4 Manufacturer:Guess

Silver colored/Yellow gold toned steel Ø47 mm ref. U0291G4

Unicode Character 'LATIN CAPITAL LETTER A WITH DIAERESIS' (U+00C4)

I get Encoding scheme `TU' unknown. error when I use the Turkish

Charbase U+0293: LATIN SMALL LETTER EZH WITH CURL

I get Encoding scheme `TU' unknown. error when I use the Turkish