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(PHP 4, PHP 5, PHP 7, PHP 8)
getprotobyname — Get protocol number associated with protocol name
getprotobyname() returns the protocol number
associated with the protocol protocol as per
/etc/protocols.
protocolThe protocol name.
Returns the protocol number, або false в разі помилки.
Приклад #1 getprotobyname() example
<?php
$protocol = 'tcp';
$get_prot = getprotobyname($protocol);
if ($get_prot === FALSE) {
echo 'Invalid Protocol';
} else {
echo 'Protocol #' . $get_prot;
}
?>