getprotobyname
(PHP 4, PHP 5)
getprotobyname --
Get protocol number associated with protocol name
Description
int
getprotobyname ( string name )
getprotobyname() returns the protocol number
associated with the protocol name as per
/etc/protocols.
例子 1. getprotobyname() example
<?php
$protocol = 'tcp';
$get_prot = getprotobyname($protocol);
if ($get_prot == -1) {
// if nothing found, returns -1
echo 'Invalid Protocol';
} else {
echo 'Protocol #' . $get_prot;
}
?>
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See also: getprotobynumber().