PHP getprotobyname() Function
The PHP getprotobyname() function returns the protocol number associated with the specified protocol name. The function returns false on failure.
Syntax
getprotobyname(protocol)
Parameters
protocol |
Required. Specify the protocol name. |
Return Value
Returns the protocol number, or false on failure.
Example:
The example below shows the usage of getprotobyname() function.
<?php
//finding the protocol number associated
//with protocol name "tcp"
$protocol = "tcp";
$get_prot = getprotobyname($protocol);
if ($get_prot === false) {
echo 'Invalid Protocol';
} else {
echo 'Protocol #' . $get_prot;
}
?>
The output of the above code will be:
Protocol #6
❮ PHP Network Reference
