Emojis在UAX#51中指定。属性\p{Emoji}应该起作用，但没有。
用强硬的方式来做。解析emoji-*.txt：

perl -C -lne'
    if (my ($c) = $_ =~ /^((?:(?:[[:xdigit:]]+ )|[[:xdigit:]]+\.\.)[[:xdigit:]]+)/) {
        if ($c =~ /\.\./) { # ranges
             my ($f, $t) = map { hex } split /\.\./, $c;
             print for map { chr } $f..$t;
        } else { # sequences
             print join "", map { chr hex } split /\s+/, $c;
        }
    }
' emoji-*.txt

这给了我们一个以换行符分隔的所有表情符号列表。

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1F2}\x{1F1F3}\x{1F1F8}\x{1F1FE}\x{1F1FF}]?|\x{1F1FB}[\x{1F1E6}\x{1F1E8}\x{1F1EA}\x{1F1EC}\x{1F1EE}\x{1F1F3}\x{1F1FA}]?|\x{1F3C2}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F442}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F446}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F447}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F448}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F449}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F44D}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F44E}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F574}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F590}[\x{FE0E}\x{FE0F}\x{1F3FB}-\x{1F3FF}]?|\x{1F1EB}[\x{1F1EE}-\x{1F1F0}\x{1F1F2}\x{1F1F4}\x{1F1F7}]?|\x{1F1ED}[\x{1F1F0}\x{1F1F2}\x{1F1F3}\x{1F1F7}\x{1F1F9}\x{1F1FA}]?|\x{1F3C3}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F468}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F469}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F46E}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F471}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F473}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F477}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F481}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F482}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F486}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F487}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F645}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F646}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F647}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F64B}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F64D}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F64E}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F6A3}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F6B4}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F6B5}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F6B6}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F926}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F937}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F938}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F939}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F93D}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F93E}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9B8}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9B9}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9CD}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9CE}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9CF}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9D1}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9D6}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9D7}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9D8}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9D9}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9DA}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9DB}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9DC}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{1F9DD}[\x{200D}\x{1F3FB}-\x{1F3FF}]?|\x{270A}[\x{1F3FB}-\x{1F3FF}]?|\x{270B}[\x{1F3FB}-\x{1F3FF}]?|\x{1F1F7}[\x{1F1EA}\x{1F1F4}\x{1F1F8}\x{1F1FA}\x{1F1FC}]?|\x{1F385}[\x{1F3FB}-\x{1F3FF}]?|\x{1F3C7}[\x{1F3FB}-\x{1F3FF}]?|\x{1F443}[\x{1F3FB}-\x{1F3FF}]?|\x{1F44A}[\x{1F3FB}-\x{1F3FF}]?|\x{1F44B}[\x{1F3FB}-\x{1F3FF}]?|\x{1F44C}[\x{1F3FB}-\x{1F3FF}]?|\x{1F44F}[\x{1F3FB}-\x{1F3FF}]?|\x{1F450}[\x{1F3FB}-\x{1F3FF}]?|\x{1F466}[\x{1F3FB}-\x{1F3FF}]?|\x{1F467}[\x{1F3FB}-\x{1F3FF}]?|\x{1F46B}[\x{1F3FB}-\x{1F3FF}]?|\x{1F46C}[\x{1F3FB}-\x{1F3FF}]?|\x{1F46D}[\x{1F3FB}-\x{1F3FF}]?|\x{1F470}[\x{1F3FB}-\x{1F3FF}]?|\x{1F472}[\x{1F3FB}-\x{1F3FF}]?|\x{1F474}[\x{1F3FB}-\x{1F3FF}]?|\x{1F475}[\x{1F3FB}-\x{1F3FF}]?|\x{1F476}[\x{1F3FB}-\x{1F3FF}]?|\x{1F478}[\x{1F3FB}-\x{1F3FF}]?|\x{1F47C}[\x{1F3FB}-\x{1F3FF}]?|\x{1F483}[\x{1F3FB}-\x{1F3FF}]?|\x{1F485}[\x{1F3FB}-\x{1F3FF}]?|\x{1F4AA}[\x{1F3FB}-\x{1F3FF}]?|\x{1F595}[\x{1F3FB}-\x{1F3FF}]?|\x{1F596}[\x{1F3FB}-\x{1F3FF}]?|\x{1F64C}[\x{1F3FB}-\x{1F3FF}]?|\x{1F64F}[\x{1F3FB}-\x{1F3FF}]?|\x{1F6C0}[\x{1F3FB}-\x{1F3FF}]?|\x{1F6CC}[\x{1F3FB}-\x{1F3FF}]?|\x{1F90F}[\x{1F3FB}-\x{1F3FF}]?|\x{1F918}[\x{1F3FB}-\x{1F3FF}]?|\x{1F919}[\x{1F3FB}-\x{1F3FF}]?|\x{1F91A}[\x{1F3FB}-\x{1F3FF}]?|\x{1F91B}[\x{1F3FB}-\x{1F3FF}]?|\x{1F91C}[\x{1F3FB}-\x{1F3FF}]?|\x{1F91E}[\x{1F3FB}-\x{1F3FF}]?|\x{1F931}[\x{1F3FB}-\x{1F3FF}]?|\x{1F932}[\x{1F3FB}-\x{1F3FF}]?|\x{1F933}[\x{1F3FB}-\x{1F3FF}]?|\x{1F934}[\x{1F3FB}-\x{1F3FF}]?|\x{1F935}[\x{1F3FB}-\x{1F3FF}]?|\x{1F936}[\x{1F3FB}-\x{1F3FF}]?|\x{1F9B5}[\x{1F3FB}-\x{1F3FF}]?|\x{1F9B6}[\x{1F3FB}-\x{1F3FF}]?|\x{1F9BB}[\x{1F3FB}-\x{1F3FF}]?|\x{1F9D2}[\x{1F3FB}-\x{1F3FF}]?|\x{1F9D3}[\x{1F3FB}-\x{1F3FF}]?|\x{1F9D4}[\x{1F3FB}-\x{1F3FF}]?|\x{1F9D5}[\x{1F3FB}-\x{1F3FF}]?|\x{1F1EF}[\x{1F1EA}\x{1F1F2}\x{1F1F4}\x{1F1F5}]?|\x{1F57A}[\x{1F3FB}-\x{1F3FF}]|\x{1F91F}[\x{1F3FB}-\x{1F3FF}]|\x{1F930}[\x{1F3FB}-\x{1F3FF}]|0[\x{20E3}\x{FE0E}\x{FE0F}]?|1[\x{20E3}\x{FE0E}\x{FE0F}]?|2[\x{20E3}\x{FE0E}\x{FE0F}]?|3[\x{20E3}\x{FE0E}\x{FE0F}]?|4[\x{20E3}\x{FE0E}\x{FE0F}]?|5[\x{20E3}\x{FE0E}\x{FE0F}]?|6[\x{20E3}\x{FE0E}\x{FE0F}]?|7[\x{20E3}\x{FE0E}\x{FE0F}]?|8[\x{20E3}\x{FE0E}\x{FE0F}]?|9[\x{20E3}\x{FE0E}\x{FE0F}]?|\\*[\x{20E3}\x{FE0E}\x{FE0F}]|\x{1F1FF}[\x{1F1E6}\x{1F1F2}\x{1F1FC}]?|\x{1F3F3}[\x{200D}\x{FE0E}\x{FE0F}]?|\x{1F415}[\x{200D}\x{FE0E}\x{FE0F}]?|#[\x{20E3}\x{FE0E}\x{FE0F}]|\x{2194}[\x{FE0E}\x{FE0F}]?|\x{2195}[\x{FE0E}\x{FE0F}]?|\x{2196}[\x{FE0E}\x{FE0F}]?|\x{2197}[\x{FE0E}\x{FE0F}]?|\x{2198}[\x{FE0E}\x{FE0F}]?|\x{2199}[\x{FE0E}\x{FE0F}]?|\x{21A9}[\x{FE0E}\x{FE0F}]?|\x{21AA}[\x{FE0E}\x{FE0F}]?|\x{231A}[\x{FE0E}\x{FE0F}]?|\x{231B}[\x{FE0E}\x{FE0F}]?|\x{23E9}[\x{FE0E}\x{FE0F}]?|\x{23EA}[\x{FE0E}\x{FE0F}]?|\x{23ED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下面是PHP中的等效版本：

preg_replace("/\u{00a9}|\u{00ae}|[\u{2000}-\u{3300}]|[\u{1e400}-\u{1f3ff}]|[\u{1e800}-\u{1f7ff}]|[\u{1ec00}-\u{1fbff}]/u",'', $value);

为了创建它，我已经将代理范围转换为int，这要归功于：How to convert between a Unicode/UCS codepoint and a UTF16 surrogate pair?

// PHP equivalent
function combine($surrogateHigh, $surrogateLow){
    return (($surrogateHigh - 0xd800) * 0x400) + ($surrogateLow - 0xdc00) + 0x10000;
}

然后我把范围

echo dechex(combine(0xd83c, 0xd000)). "\n";
echo dechex(combine(0xd83c, 0xdfff)). "\n";

echo dechex(combine(0xd83d, 0xd000)). "\n";
echo dechex(combine(0xd83d, 0xdfff)). "\n";

echo dechex(combine(0xd83e, 0xd000)). "\n";
echo dechex(combine(0xd83e, 0xdfff)). "\n";

就PHP而言，您可以对尝试应用“非法”REGEX模式的字符串进行json_encode（），这将把字符串转换为UTF-8友好字符。
在这里，您可以检查文字Unicode字符串：

$value = "Sup 🚫";
$res = json_decode(preg_replace('/\\\ud83d\\\udeab/i', 'REPLACED', json_encode($value)));
// $res is now "Sup REPLACED", yes some emojis are made up of 2 unicodes :\

注意：我把它 Package 在一个json_decode（）中，以取回原始字符串。
另外，>= 0xd800 && <= 0xdfff只是说任何十六进制范围内的unicode都会抛出这个错误。我在上面的例子中使用的emoji确实在非法范围内。

**缺点：**您无法使用此解决方案应用十六进制范围，您必须准确了解哪些表情符号有问题，并精确处理它们（例如'/' . implode('|', EmojiClass::BAD_EMOJI_HEXES_ARRAY) . '/i'）