This question already has an answer here:
I tried to store emoji to my database and it is save like this '😀ðŸ˜'. How can i displayed it as EMOJI on my PHP website. What should I do?
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分享 PHP is agnostic on this part. It only understands binary. The only responsible to display the emoji correctly is the web page itself.
To be more exact, the PHP stores strings as a series of bytes. Emoji are as big as 4 (or even more than 4) bytes. If you just see the binary data with the wrong encoding, then this artifact will appear. Instead make sure that your page has a proper unicode encoding , something like
<head>
<meta charset="UTF-8">
</head>
And also on the php side:
header('Content-type: text/plain; charset=utf-8');
