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