getprotobyname

(PHP 4, PHP 5, PHP 7)

getprotobyname — Get protocol number associated with protocol name

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getprotobyname ( string $name ) : int

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

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name

The protocol name.

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Returns the protocol number, 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE.

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Example #1 getprotobyname() example

<?php
$protocol = 'tcp';
$get_prot = getprotobyname($protocol);
if ($get_prot === FALSE) {
    echo 'Invalid Protocol';
} else {
    echo 'Protocol #' . $get_prot;
}
?>

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