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

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