(PHP 5 >= 5.1.0, PHP 7)
inet_ntop — Converts a packed internet address to a human readable representation
$in_addr
) : stringThis function converts a 32bit IPv4, or 128bit IPv6 address (if PHP was built with IPv6 support enabled) into an address family appropriate string representation.
in_addrA 32bit IPv4, or 128bit IPv6 address.
Returns a string representation of the address 或者在失败时返回 FALSE.
Example #1 inet_ntop() 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;
?>