Php/docs/function.getprotobynumber
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getprotobynumber
(PHP 4, PHP 5, PHP 7)
getprotobynumber — Get 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
.