laravel 检测字符串中的表情符号

Detect emoticons in string

提问by TVke

I found that you need PHP 7 and MySQL 5.5 to use emoticons in a string that you want to upload to the database. I don't have these specification on my server so I want to give an error message in laravel or php.

我发现您需要 PHP 7 和 MySQL 5.5 才能在要上传到数据库的字符串中使用表情符号。我的服务器上没有这些规范，所以我想在 laravel 或 php 中给出错误消息。

Is there a way to detect emoticons in php? If so then I can create a custom validation or something like that?

有没有办法检测php中的表情符号？如果是这样，那么我可以创建自定义验证或类似的东西吗？

I've tried alpha_dashvalidation in Laravel but then it isn't possible to do one old-school like this one :-)

我已经alpha_dash在 Laravel 中尝试过验证，但是不可能做一个像这样的老派:-)

回答by Friendly Code

To follow on from Johannes answer I found a solution on a forum somewhere. This regex does the trick :)

继约翰内斯的回答之后，我在某个论坛上找到了一个解决方案。这个正则表达式可以解决问题:)

    $unicodeRegexp = '([*#0-9](?>\xEF\xB8\x8F)?\xE2\x83\xA3|\xC2[\xA9\xAE]|\xE2..(\xF0\x9F\x8F[\xBB-\xBF])?(?>\xEF\xB8\x8F)?|\xE3(?>\x80[\xB0\xBD]|\x8A[\x97\x99])(?>\xEF\xB8\x8F)?|\xF0\x9F(?>[\x80-\x86].(?>\xEF\xB8\x8F)?|\x87.\xF0\x9F\x87.|..(\xF0\x9F\x8F[\xBB-\xBF])?|(((?<zwj>\xE2\x80\x8D)\xE2\x9D\xA4\xEF\xB8\x8F\k<zwj>\xF0\x9F..(\k<zwj>\xF0\x9F\x91.)?|(\xE2\x80\x8D\xF0\x9F\x91.){2,3}))?))';

回答by GDY

This is shamelessly copied and adjusted from this function here. So kudos to Huy Nguyen Quangwho has written the original function.

这是从这里的这个功能中无耻地复制和调整的。非常感谢编写原始函数的Huy Nguyen Quang。

function has_emojis_old( $string ) {

    preg_match( '/[\x{1F600}-\x{1F64F}]/u', $string, $matches_emo );

    return !empty( $matches_emo[0] ) ? true : false;

}

EDIT:

编辑：

As pointed out there are some emojis that the above function do not detect. I've checked that and thats absolutely right.

正如所指出的，上述功能无法检测到一些表情符号。我已经检查过了，那是绝对正确的。

Reason for that is that the function above checks an unicode range (similar to: is this character between 5 and 15). But there are many emojis that aren't in this range. It would be possible to just increase the unicode range but maybe there are some characters in that range that aren't emojis … so that seems not very elegant.

原因是上面的函数检查 unicode 范围（类似于：这个字符在 5 到 15 之间）。但是有很多表情符号不在这个范围内。可以只增加 unicode 范围，但也许该范围内有些字符不是表情符号……所以这看起来不太优雅。

The original function checks multiple ranges and this may be the best solution. Thing is, this function was updated 4 years ago so it certainly do not reflect the current emoji palette.

原始函数检查多个范围，这可能是最好的解决方案。事实是，这个功能是 4 年前更新的，所以它肯定没有反映当前的表情符号调色板。

Because im not very into emojis and their unicode ranges i can't provide a range based solution … instead i just check against all existing emoji unicodes:

因为我不是很喜欢表情符号和它们的 unicode 范围，所以我无法提供基于范围的解决方案……相反，我只是检查所有现有的表情符号 unicodes：

function has_emojis( $string ) {

    // Array of emoji (v12, 2019) unicodes from https://unicode.org/emoji/charts/emoji-list.html

    $unicodes = array( 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);

    return preg_match( '/[\x{' . implode( '}\x{', $unicodes ) . '}]/u', $string ) ? true : false;

}

This function has – of course – to be updated for every new emoji release but that has to happen for ranged solutions as well.

当然，此功能必须针对每个新的表情符号发布进行更新，但对于范围解决方案也必须进行更新。

回答by thisismairaj

Use the following function:

使用以下函数：

function remove_emoji($string) {

    // Match Emoticons
    $regex_emoticons = '/[\x{1F600}-\x{1F64F}]/u';
    $clear_string = preg_replace($regex_emoticons, '', $string);

    // Match Miscellaneous Symbols and Pictographs
    $regex_symbols = '/[\x{1F300}-\x{1F5FF}]/u';
    $clear_string = preg_replace($regex_symbols, '', $clear_string);

    // Match Transport And Map Symbols
    $regex_transport = '/[\x{1F680}-\x{1F6FF}]/u';
    $clear_string = preg_replace($regex_transport, '', $clear_string);

    // Match Miscellaneous Symbols
    $regex_misc = '/[\x{2600}-\x{26FF}]/u';
    $clear_string = preg_replace($regex_misc, '', $clear_string);

    // Match Dingbats
    $regex_dingbats = '/[\x{2700}-\x{27BF}]/u';
    $clear_string = preg_replace($regex_dingbats, '', $clear_string);

    return $clear_string;
}