inet_ntop

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

inet_ntop — Bir IP adresinin in_addr gösterimini insan okuyabilir gösterime dönüştürür

Açıklama

inet_ntop(string $ip): string|false

Bu işlev 32 bitlik IPv4 veya (PHP, IPv6 desteğiyle derenmişse) 128 bitlik IPv6 adresini dizge gösterimli uygun bir adres ailesine dönüştürür.

Bağımsız Değişkenler

ip: 32 bitlik IPv4 veya 128 bitlik IPv6 adresi

Dönen Değerler

Başarısızlık durumunda false, aksi takdirde adresin dizge gösterimiyle döner.

Örnekler

Örnek 1 - inet_ntop() örneği

<?php
$ikil = chr(127) . chr(0) . chr(0) . chr(1);
$dizge = inet_ntop($packed);

/* Çıktısı: 127.0.0.1 */
echo $dizge;

$ikil = str_repeat(chr(0), 15) . chr(1);
$dizge = inet_ntop($packed);

/* Çıktısı: ::1 */
echo $dizge;
?>

Ayrıca Bakınız

long2ip() - Bir (IPv4) uzun tamsayılı ağ adresini noktalı gösterimi içeren bir dizgeye dönüştürür
ip2long() - Noktalı IP adresi gösterimini içeren bir dizgeyi uzun tamsayıya dönüştürür
inet_pton() - İnsan okuyabilir bir IP adresini in_addr gösterimine dönüştürür

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User Contributed Notes 4 notes

down

ryansun81 at gmail dot com ¶

14 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

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marcus at synchromedia dot co dot uk ¶

9 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.

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MagicalTux at FF dot st ¶

19 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.

<?php
function my_inet_ntop($ip) {
    if (strlen($ip)==4) {
        // ipv4
        list(,$ip)=unpack('N',$ip);
        $ip=long2ip($ip);
    } elseif(strlen($ip)==16) {
        // ipv6
        $ip=bin2hex($ip);
        $ip=substr(chunk_split($ip,4,':'),0,-1);
        $ip=explode(':',$ip);
        $res='';
        foreach($ip as $seg) {
            while($seg{0}=='0') $seg=substr($seg,1);
            if ($seg!='') {
                $res.=($res==''?'':':').$seg;
            } else {
                if (strpos($res,'::')===false) {
                    if (substr($res,-1)==':') continue;
                    $res.=':';
                    continue;
                }
                $res.=($res==''?'':':').'0';
            }
        }
        $ip=$res;
    }
    return $ip;
}
?>

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 : http://www.ipv6style.jp/en/faq/latest.shtml#2003022112 )

Example: 
<?php
$packed = str_repeat(chr(0), 15) . chr(1);
$expanded = my_inet_ntop($packed);

/* Outputs: ::1 */
echo $expanded;
?>

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 !

down

-6

PandoraBox2007 at gmail dot com ¶

12 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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