getprotobynumber
(PHP 4, PHP 5, PHP 7, PHP 8)
getprotobynumber — Get protocol name associated with protocol number
說明
getprotobynumber(int
$protocol): string|false getprotobynumber() returns the protocol name
associated with protocol protocol as per /etc/protocols.
參數
-
protocol The protocol number.
返回值
Returns the protocol name as a string, 或者在失敗時返回 false.
參見
- getprotobyname() - Get protocol number associated with protocol name