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The getservbyport() function retrieves the Internet service corresponding to the port and protocol.
string getservbyport ( int $port , string $protocol )
Used to obtain the Internet service corresponding to the port number
Returns the Internet service name in string format. Returns false on failure.
| Serial number | Parameters and descriptions |
|---|---|
| 1 | port Port number |
| 2 | protocol The protocol is 'tcp' or 'udp' (lowercase). |