getprotobynumber

(PHP 4, PHP 5, PHP 7)

getprotobynumber — Get protocol name associated with protocol number

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getprotobynumber ( int $number ) : string

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

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number

The protocol number.

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Returns the protocol name as a string, ������ʧ��ʱ���� FALSE.

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