/**
 * Created by PhpStorm.
 * function: pingAddress
 * Description:
 * User: Xiaoxie
 * Email 736214763@qq.com
 * @param $address
 * @return bool|int
 * -n/c 次数  -w 超时时间
 */
public function pingAddress($address='www.baidu.com') {
    $status = -1;
    if (strcasecmp(PHP_OS, 'WINNT') === 0) {
        exec("ping -n 1  -w 1 {$address}", $pingresult, $status);
    } elseif (strcasecmp(PHP_OS, 'Linux') === 0) {
        exec("ping -c 1 -w 1 {$address}", $pingresult, $status);
    }
    if (0 == $status) {
        $status = true;
    } else {
        $status = false;
    }
    return $status;
}