How to convert Emoji from Unicode in PHP?

Question

I use this table of Emoji and try this code:

Answer 1

PHP 5

JSON's \u can only handle one UTF-16 code unit at a time, so you need to write the surrogate pair instead. For U+1F600 this is \uD83D\uDE00, which works:

echo json_decode('"\uD83D\uDE00"');