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getprotobynumber

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

getprotobynumberGet protocol name associated with protocol number

說(shuō)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(shí)返回 false.

參見(jiàn)

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