【www.gdgbn.com--php正则表达式】

string getservbyport ( int $port , string $protocol )

*/
$services=array("80","21","22","23","25","143");      //定义数组
foreach($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
 
 
 
}

本文来源：http://www.gdgbn.com/jiaocheng/28420/