getprotobynumber

(PHP 4, PHP 5, PHP 7, PHP 8)

getprotobynumber — Get protocol name associated with protocol number

说明

getprotobynumber(int $protocol): string|false

getprotobynumber() returns the protocol name associated with protocol protocol as per /etc/protocols.

参数

protocol

The protocol number.

返回值

Returns the protocol name as a string, 或者在失败时返回 false.

参见