WhatsappByEdna::convertSmiles

static function convertSmiles(string $text = ''): string
{
	static $pattern = [];
	static $smileOut = [];

	if (empty($pattern))
	{
		foreach (static::$smileToUnicode as $smile => $emoji)
		{
			$pattern[] = '/(((?<=\s)|^)(' . preg_quote($smile, '/') . ')(?=\s|$|[!,.?]))/S';
			$smileOut[] = $emoji;
		}
	}
	return preg_replace($pattern, $smileOut, $text);
}