<?php
$str = 'небезнадёжен 😂🤓:https://vk.c';
// Match Emoticons
$regexEmoticons = '/[\x{1F600}-\x{1F64F}]/u';
$str = preg_replace($regexEmoticons, '', $str);
// Match Miscellaneous Symbols and Pictographs
$regexSymbols = '/[\x{1F300}-\x{1F5FF}]/u';
$str = preg_replace($regexSymbols, '', $str);
// Match Transport And Map Symbols
$regexTransport = '/[\x{1F680}-\x{1F6FF}]/u';
$str = preg_replace($regexTransport, '', $str);
// Match Miscellaneous Symbols
$regexMisc = '/[\x{2600}-\x{26FF}]/u';
$str = preg_replace($regexMisc, '', $str);
// Match Dingbats
$regexDingbats = '/[\x{2700}-\x{27BF}]/u';
$str = preg_replace($regexDingbats, '', $str);
var_dump($str);
preferences:
42.9 ms | 402 KiB | 5 Q