$_POST empty if there is accent in text

Here is the error that I get from your sample Json and its not on CoupÈ

Error: Parse error on line 4:
...": 0, "modello": “popoloso” }, {
----------------------^
Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '[', got 'undefined'

There are those who tell lies with meaning behind them and those meaning less lies!