PHP Networking
Which one of the following function returns the port number of a specified service?

getservername()
getservbyname()
getportname()
getserverbyname()

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PHP Networking
What will the following script do?
echo getservbyname ('ftp', 'tcp');

A list of the FTP servers on the local network
The port associated with the TCP service called “FTP”
The address of the FTP server called “tcp”
A list of the ports associated with all services except FTP

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