❮ PHP Network Reference
Example
Convert a packed address into a readable format:
Try it Yourself »
Definition and Usage
The inet_ntop[] function converts a 32bit IPv4 or 128bit IPv6 address into a readable format.
Syntax
Parameter Values
| address | Required. Specifies a 32bit IPv4 or 128bit IPv6 address |
Technical Details
| A human readable address on success. FALSE on failure |
| 5.1+ |
| PHP 5.3: Now available on Windows platforms |
❮ PHP Network Reference
[PHP 5 >= 5.1.0, PHP 7, PHP 8]
inet_ntop — Converts a packed internet address to a human readable representation
Description
inet_ntop[string $ip]: string|false
This function converts a 32bit IPv4, or 128bit IPv6 address [if PHP was built with IPv6 support enabled] into an address family appropriate string representation.
Parameters
ipA 32bit IPv4, or 128bit IPv6 address.
Return Values
Returns a string representation of the address or false on failure.
Examples
Example #1 inet_ntop[] Example
See Also
- long2ip[] - Converts an long integer address into a string in [IPv4] Internet standard dotted format
- ip2long[] - Converts a string containing an [IPv4] Internet Protocol dotted address into a long integer
- inet_pton[] - Converts a human readable IP address to its packed in_addr representation
ryansun81 at gmail dot com ¶
12 years ago
For people who wondering what the meaning of this function name:
pton: a presentation[printable] format address to network address
ntop: a network address to presentation[printable] format address
marcus at synchromedia dot co dot uk ¶
7 years ago
PHP's inet_ntop function is not compatible with the binary representation used by MySQL's INET6_ATON function, assuming you are using the recommended method of storing both IPv4 and IPv6 addresses in a VARBINARY[16] field. You need to convert it like this:
/**
* Convert a MySQL binary v4 [4-byte] or v6 [16-byte] IP address to a printable string.
* @param string $ip A binary string containing an IP address, as returned from MySQL's INET6_ATON function
* @return string Empty if not valid.
*/
function inet6_ntop[$ip] {
$l = strlen[$ip];
if [$l == 4 or $l == 16] {
return inet_ntop[pack['A' . $l, $ip]];
}
return '';
}
You don't need a function going the other way because MySQL's INET6_NTOA is already compatible with PHP's inet_pton function.
MagicalTux at FF dot st ¶
17 years ago
For people who need this function but don't have it, I could write a function which should give almost the same result.
I followed IPv6 reprenstation rules :
- A series of "0"s in a 16bit block can by represented by "0".
- A series of blocks containing only "0"s can be suppressed and represented by "::" [this can be done only once]
[source : //www.ipv6style.jp/en/faq/latest.shtml#2003022112 ]
Example:
I checked in CVS [2005-04-25] and didn't find the inet_ntop function [I really needed to handle IPv6] so I implemented it myself !
PandoraBox2007 at gmail dot com ¶
10 years ago
Before inet_pton nice work
//2001:0db8:85a3:0000:0000:8a2e:0370:7334
After
//2001:db8:85a3::8a2e:370:7334
no need compare compress data
string inet_ntop [ string $in_addr [, bool $compress = false] ]
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