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(PHP 4, PHP 5, PHP 7, PHP 8)
getservbyname — 获取互联网服务协议对应的端口
getservbyname()
返回互联网服务 service
指定的协议 protocol
中对应的端口,
依据 /etc/services。
service
互联网服务名称的字符串。
protocol
protocol
既可以是 "tcp"
也可以是 "udp"
(小写)。
返回端口号,如果 service
或 protocol
未找到返回 false
。
示例 #1 getservbyname() 例子
<?php
$services = array('http', 'ftp', 'ssh', 'telnet', 'imap',
'smtp', 'nicname', 'gopher', 'finger', 'pop3', 'www');
foreach ($services as $service) {
$port = getservbyname($service, 'tcp');
echo $service . ": " . $port . "<br />\n";
}
?>