php中getservbyport与getservbyname函数用法实例

本文实例讲述了php中getservbyport与getservbyname函数用法。分享给大家供大家参考。具体如下：

复制代码 代码如下:
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."<br/>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."<br/>n";         //输出结果
}

希望本文所述对大家的php程序设计有所帮助。