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
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
inet_ntop — Convertit un paquet d'adresses internet en une représentation humainement lisible
Convertit une adresse 32 bit IPv4 ou 128 bit IPv6 (si PHP a été compilé avec le support IPv6) en une chaîne représentant une famille d'adresses.
ipUne adresse 32 bit IPv4, ou 128 bit IPv6.
Retourne une représentation de l'adresse, sous la forme d'une chaîne de caractères ou false si une erreur survient.
Exemple #1 Exemple avec inet_ntop()
<?php
$packed = chr(127) . chr(0) . chr(0) . chr(1);
$expanded = inet_ntop($packed);
/* Affiche : 127.0.0.1 */
echo $expanded;
$packed = str_repeat(chr(0), 15) . chr(1);
$expanded = inet_ntop($packed);
/* Affiche : ::1 */
echo $expanded;
?>
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 addressPHP'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.