(PHP 4, PHP 5, PHP 7)
getservbyname — Get port number associated with an Internet service and protocol
getservbyname ( string $service , string $protocol ) : int
getservbyname() returns the Internet port which corresponds to service
for the specified protocol
as per /etc/services.
service
The Internet service name, as a string.
protocol
protocol
is either "tcp"
or "udp"
(in lowercase).
Returns the port number, or false
if service
or protocol
is not found.
Example #1 getservbyname() example
<?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"; } ?>
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https://www.php.net/manual/en/function.getservbyname.php