Well, as the question is very self explanatory, I will only reinforce the question.
I have an APP system of conversation, which through HTML , I command for PHP with Ajax , but if the user tries to insert some emoji in> (emotion) of your device in the database it receives: "????" as a message.
How can I change this so that I receive some type of code for each emotion and the site lists it according to its value?
Live,
Briefly, you will need to convert the data added by the users, taking into account the type of device used. The most usual is having to convert to Unified. I leave here the link with the code ready to work. Say it if you have problems.
See here http://code.iamcal.com/php/emoji/ .
A simpler way is to add the emoji within the message as a span with a specific class in the CSS that matches it. In the database, save the message normally as HTML.
