移除微信昵称中的emoji字符

移除微信昵称中的emoji字符：

/**

 * 移除微信昵称中的emoji字符

 * @param type $nickname

 * @return type

 */

function removeEmoji($nickname) {

    $clean_text = "";

    // Match Emoticons

    $regexEmoticons = '/[\x{1F600}-\x{1F64F}]/u';

    $clean_text = preg_replace($regexEmoticons, '', $nickname);

    // 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);

    //截取指定长度的昵称

    $clean_text = ds_substing($clean_text,0,20);

    return trim($clean_text);

}