这篇文章主要介绍了php中获取主机名、协议及IP地址的方法,其中涉及gethostbyaddr、gethostbynamel、getprotobyname、getprotobynumber等函数及$_SERVER变量的应
本文实例讲述了php中获取主机名、协议及IP地址的方法。分享给大家供大家参考。
具体实现代码如下:
复制代码 代码如下:
$hostname=gethostbyaddr($_SERVER['remote_addr']); //获取主机名
echo $hostname; //输出结果
//
$hosts=gethostbynamel('localhost'); //获取ip地址列表
print_r($hosts); //输出数组
//
$protocol='tcp'; //定义协议名称
$get_prot=getprotobyname($protocol); //返回协议号
if($get_prot==-1) //如果找不到
{
echo 'invalid protocol'; //输出错误信息
}
else
{
echo 'protocol #'.$get_prot; //输出相应的协议号
}
//
$protocol_num='6'; //定义协议号
$get_prot=getprotobynumber($protocol_num); //返回协议名称
if($get_prot==-1) //如果找不到
{
echo 'invalid protocol'; //输出错误信息
}
else
{
echo 'protocol #'.$get_prot; //输出相应的协议名称
}
希望本文所述对大家的php程序设计有所帮助。
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