http://www.yakyak.org/viewtopic.php?f=2&t=84384
The particular emoji is Unicode 1f534, "LARGE RED CIRCLE" but I suspect it's a more general problem.
I can't include it as if I do I see the error whatever other text is included. The error is
SQL ERROR [ mysqli ]
Incorrect string value: '\xF0\x9F\x94\xB4' for column 'post_text' at row 1 [1366]
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