getservbyname
PHP function
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(PHP 4, PHP 5, PHP 7, PHP 8)
Get port number associated with an Internet service and protocol
Description
getservbyname(string $service, string $protocol): int|false
getservbyname() returns the Internet port which corresponds to service for the specified protocol as per /etc/services.
Parameters
serviceThe Internet service name, as a string.
protocolprotocolis either"tcp"or"udp"(in lowercase).
Return Values
Returns the port number, or false if service or protocol is not found.
Examples
getservbyname() example
php
<?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";
}
?>See Also
getservbyport()- Port-numbers for a complete list of port numbers.