INET_NTOP(3) 1 INET_NTOP(3)inet_ntop - Converts a packed internet address to a human readable representationSYNOPSIS
string inet_ntop (string $in_addr)
DESCRIPTION
This function converts a 32bit IPv4, or 128bit IPv6 address (if PHP was built with IPv6 support enabled) into an address family appropri-
ate string representation.
PARAMETERS
o $in_addr
- A 32bit IPv4, or 128bit IPv6 address.
RETURN VALUES
Returns a string representation of the address or FALSE on failure.
EXAMPLES
Example #1
inet_ntop(3) Example
<?php
$packed = chr(127) . chr(0) . chr(0) . chr(1);
$expanded = inet_ntop($packed);
/* Outputs: 127.0.0.1 */
echo $expanded;
$packed = str_repeat(chr(0), 15) . chr(1);
$expanded = inet_ntop($packed);
/* Outputs: ::1 */
echo $expanded;
?>
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | This function is now available on Windows plat- |
| | forms. |
| | |
+--------+---------------------------------------------------+
SEE ALSO long2ip(3), ip2long(3), inet_pton(3).
PHP Documentation Group INET_NTOP(3)
Check Out this Related Man Page
INET_NTOP(3) Linux Programmer's Manual INET_NTOP(3)NAME
inet_ntop - convert IPv4 and IPv6 addresses from binary to text form
SYNOPSIS
#include <arpa/inet.h>
const char *inet_ntop(int af, const void *src,
char *dst, socklen_t size);
DESCRIPTION
This function converts the network address structure src in the af address family into a character string. The resulting string is copied
to the buffer pointed to by dst, which must be a non-NULL pointer. The caller specifies the number of bytes available in this buffer in
the argument size.
inet_ntop() extends the inet_ntoa(3) function to support multiple address families, inet_ntoa(3) is now considered to be deprecated in
favor of inet_ntop(). The following address families are currently supported:
AF_INET
src points to a struct in_addr (in network byte order) which is converted to an IPv4 network address in the dotted-decimal format,
"ddd.ddd.ddd.ddd". The buffer dst must be at least INET_ADDRSTRLEN bytes long.
AF_INET6
src points to a struct in6_addr (in network byte order) which is converted to a representation of this address in the most appropri-
ate IPv6 network address format for this address. The buffer dst must be at least INET6_ADDRSTRLEN bytes long.
RETURN VALUE
On success, inet_ntop() returns a non-NULL pointer to dst. NULL is returned if there was an error, with errno set to indicate the error.
ERRORS
EAFNOSUPPORT
af was not a valid address family.
ENOSPC The converted address string would exceed the size given by size.
CONFORMING TO
POSIX.1-2001. Note that RFC 2553 defines a prototype where the last argument size is of type size_t. Many systems follow RFC 2553. Glibc
2.0 and 2.1 have size_t, but 2.2 and later have socklen_t.
BUGS
AF_INET6 converts IPv4-mapped IPv6 addresses into an IPv6 format.
EXAMPLE
See inet_pton(3).
SEE ALSO getnameinfo(3), inet(3), inet_pton(3)COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2008-11-11 INET_NTOP(3)
Hi there,
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