Php/docs/function.getprotobynumber

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getprotobynumber

(PHP 4, PHP 5, PHP 7)

getprotobynumberGet protocol name associated with protocol number


说明

getprotobynumber ( int $number ) : string|false

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


参数

number
The protocol number.


返回值

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


参见