getprotobyname
PHP function
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(PHP 4, PHP 5, PHP 7, PHP 8)
Get protocol number associated with protocol name
Description
getprotobyname(string $protocol): int|false
getprotobyname() returns the protocol number associated with the protocol protocol as per /etc/protocols.
Parameters
protocolThe protocol name.
Return Values
Returns the protocol number, Falseforfailure.
Examples
getprotobyname() example
php
<?php
$protocol = 'tcp';
$get_prot = getprotobyname($protocol);
if ($get_prot === FALSE) {
echo 'Invalid Protocol';
} else {
echo 'Protocol #' . $get_prot;
}
?>