<?php
/**
 * Created by PhpStorm.
 * User: win7
 * Date: 2017-07-03
 * Time: 15:17
 */

class usefull
{
    public static $_instance;

    private function __construct()
    {

    }

    private function __clone()
    {
        // TODO: Implement __clone() method.
    }

    public static function getInstance()
    {
        if(!(self::$_instance instanceof self))
        {
            self::$_instance = new self();
        }

        return self::$_instance;
    }


    public function check_name($name)
    {
        $nickname = str_replace(array("&","'", '"'),"", $name);

        $nickname = $this->removeEmoji($nickname);
        if(empty($nickname))
        {
            $nickname = '表情符号';
        }
        $nickname = trim($nickname);
        if(empty($nickname))
        {
            $nickname='@#$2017';
        }

        return $nickname;
    }

    public function removeEmoji($text) {
        $clean_text = "";
        // Match Emoticons
        $regexEmoticons = '/[\x{1F600}-\x{1F64F}]/u';
        $clean_text = preg_replace($regexEmoticons, '', $text);
        // Match Miscellaneous Symbols and Pictographs
        $regexSymbols = '/[\x{1F300}-\x{1F5FF}]/u';
        $clean_text = preg_replace($regexSymbols, '', $clean_text);
        // Match Transport And Map Symbols
        $regexTransport = '/[\x{1F680}-\x{1F6FF}]/u';
        $clean_text = preg_replace($regexTransport, '', $clean_text);
        // Match Miscellaneous Symbols
        $regexMisc = '/[\x{2600}-\x{26FF}]/u';
        $clean_text = preg_replace($regexMisc, '', $clean_text);
        // Match Dingbats
        $regexDingbats = '/[\x{2700}-\x{27BF}]/u';
        $clean_text = preg_replace($regexDingbats, '', $clean_text);
        return $clean_text;
    }

}