php中getservbyport与getservbyname函数用法实例

*/
$services=array('80','21','22','23','25','143'); //定义数组
foreach($services as $service) //循环读取内容
{
$protocol=getservbyport($service,'tcp'); //返回端口号对应的协议
echo $service.":".$protocol."
n"; //输出结果
}

/
int getservbyname ( string $service,string $protocol )
/

$services=array('http','ftp','ssh','telnet','imap',
'smtp','nicname','gopher','finger','pop3','www'); //定义一个数组
foreach($services as $service) //循环读取内容
{
$port=getservbyname($service,'tcp'); //获取数组元素对应端口
echo $service.":".$port."
n"; //输出结果
}