Обнаружение смайликов в строке
Я обнаружил, что вам нужны PHP 7 и MySQL 5.5, чтобы использовать смайлики в строке, которую вы хотите загрузить в базу данных.
У меня нет этих спецификаций на моем сервере, поэтому я хочу дать сообщение об ошибке в laravel или php.
Есть ли способ обнаружить смайлики в php? Если так, то я могу создать пользовательскую проверку или что-то в этом роде?
я пробовал alpha_dash проверка в Laravel, но тогда невозможно сделать одну старую школу, подобную этой :-)
Решение
Используйте следующую функцию:
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;
}
Другие решения
Это бесстыдно копируется и корректируется из этой функции Вот. Так что слава Хай Нгуен Куанг кто написал оригинальную функцию.
function has_emojis_old( $string ) {
preg_match( '/[\x{1F600}-\x{1F64F}]/u', $string, $matches_emo );
return !empty( $matches_emo[0] ) ? true : false;
}
РЕДАКТИРОВАТЬ:
Как указывалось, есть некоторые смайлики, которые вышеуказанная функция не обнаруживает. Я проверил это, и это абсолютно верно.
Причина этого заключается в том, что вышеприведенная функция проверяет диапазон Юникода (аналогично: этот символ находится между 5 и 15). Но есть много смайликов, которых нет в этом диапазоне. Можно было бы просто увеличить диапазон Юникода, но, возможно, в этом диапазоне есть некоторые персонажи, которые не являются смайликами … так что это выглядит не очень элегантно.
Оригинальная функция проверяет несколько диапазонов, и это может быть лучшим решением. Дело в том, что эта функция была обновлена 4 года назад, поэтому она, безусловно, не отражает текущую палитру смайликов.
Поскольку я не очень в Emojis и их диапазонах Unicode, я не могу предоставить решение на основе диапазона … вместо этого я просто проверить против все существующие эмодзи юникоды:
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;
}
Эта функция, разумеется, должна обновляться для каждого нового выпуска смайликов, но это должно происходить и для дальних решений.
Чтобы продолжить ответ Йоханнеса, я нашел решение где-то на форуме. Это регулярное выражение делает свое дело 🙂
$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}))?))';