GETPROTOBYNAME(3) 1 GETPROTOBYNAME(3)getprotobyname - Get protocol number associated with protocol nameSYNOPSIS
int getprotobyname (string $name)
DESCRIPTION getprotobyname(3) returns the protocol number associated with the protocol $name as per /etc/protocols.
PARAMETERS
o $name
- The protocol name.
RETURN VALUES
Returns the protocol number, or FALSE on failure.
EXAMPLES
Example #1
getprotobyname(3) example
<?php
$protocol = 'tcp';
$get_prot = getprotobyname($protocol);
if ($get_prot === FALSE) {
echo 'Invalid Protocol';
} else {
echo 'Protocol #' . $get_prot;
}
?>
SEE ALSO getprotobynumber(3).
PHP Documentation Group GETPROTOBYNAME(3)
Check Out this Related Man Page
GETPROTOENT(3) Linux Programmer's Manual GETPROTOENT(3)NAME
getprotoent, getprotobyname, getprotobynumber, setprotoent, endprotoent - get protocol entry
SYNOPSIS
#include <netdb.h>
struct protoent *getprotoent(void);
struct protoent *getprotobyname(const char *name);
struct protoent *getprotobynumber(int proto);
void setprotoent(int stayopen);
void endprotoent(void);
DESCRIPTION
The getprotoent() function reads the next line from the file /etc/protocols and returns a structure protoent containing the broken out
fields from the line. The /etc/protocols file is opened if necessary.
The getprotobyname() function returns a protoent structure for the line from /etc/protocols that matches the protocol name name.
The getprotobynumber() function returns a protoent structure for the line that matches the protocol number number.
The setprotoent() function opens and rewinds the /etc/protocols file. If stayopen is true (1), then the file will not be closed between
calls to getprotobyname() or getprotobynumber().
The endprotoent() function closes /etc/protocols.
The protoent structure is defined in <netdb.h> as follows:
struct protoent {
char *p_name; /* official protocol name */
char **p_aliases; /* alias list */
int p_proto; /* protocol number */
}
The members of the protoent structure are:
p_name The official name of the protocol.
p_aliases
A zero terminated list of alternative names for the protocol.
p_proto
The protocol number.
RETURN VALUE
The getprotoent(), getprotobyname() and getprotobynumber() functions return the protoent structure, or a NULL pointer if an error occurs or
the end of the file is reached.
FILES
/etc/protocols
protocol database file
CONFORMING TO
BSD 4.3
SEE ALSO getservent(3), getnetent(3), protocols(5)BSD 1993-04-24 GETPROTOENT(3)