|
|
 |
LXVI. H�l�zatkezel�si F�ggv�nyekK�vetelm�nyekAz itt le�rt f�ggv�nyek a standard modulban
tal�lhat�ak, ami mindig rendelkez�sre �ll. Telep�t�sSemmilyen telep�t�s nem sz�ks�ges ezen f�ggv�nyek
haszn�lat�hoz, a PHP alapelemei. Fut�sidej� be�ll�t�sok
The behaviour of these functions is affected by settings in php.ini.
T�bl�zat 1. Network Configuration Options | Name | Default | Changeable |
|---|
| define_syslog_variables | "0" | PHP_INI_ALL |
For further details and definition of the PHP_INI_* constants see
ini_set().
Here is a short explanation of the configuration directives.
- define_syslog_variables
boolean
Whether or not to define the various syslog variables (e.g. $LOG_PID,
$LOG_CRON, etc.). Turning it off is a good idea performance-wise. At
runtime, you can define these variables by calling
define_syslog_variables().
Er�forr�s t�pusokEz a kiterjeszt�s semmilyen er�forr�s
t�pust nem defini�l. El�re defini�lt �lland�k
Az itt felsorolt konstansok minden el�rthet�ek mivel r�szei
a PHP alaptelep�t�s�nek.
T�bl�zat 2. openlog() Options | Constant | Description |
|---|
| LOG_CONS |
if there is an error while sending data to the system logger,
write directly to the system console
| | LOG_NDELAY |
open the connection to the logger immediately
| | LOG_ODELAY |
(default) delay opening the connection until the first
message is logged
| | LOG_PERROR | print log message also to standard error | | LOG_PID | include PID with each message |
T�bl�zat 3. syslog() Priorities (in descending order) | Constant | Description |
|---|
| LOG_EMERG | system is unusable | | LOG_ALERT | action must be taken immediately | | LOG_CRIT | critical conditions | | LOG_ERR | error conditions | | LOG_WARNING | warning conditions | | LOG_NOTICE | normal, but significant, condition | | LOG_INFO | informational message | | LOG_DEBUG | debug-level message |
T�bl�zat 4. dns_get_record() Options | Constant | Description |
|---|
| DNS_A | IPv4 Address Resource | | DNS_MX | Mail Exchanger Resource | | DNS_CNAME | Alias (Canonical Name) Resource | | DNS_NS | Authoritative Name Server Resource | | DNS_PTR | Pointer Resource | | DNS_HINFO | Host Info Resource (See
for the meaning of these values) | | DNS_SOA | Start of Authority Resource | | DNS_TXT | Text Resource | | DNS_ANY | Any Resource Record. On most systems
this returns all resource records, however
it should not be counted upon for critical
uses. Try DNS_ALL instead. | | DNS_AAAA | IPv6 Address Resource | | DNS_ALL | Itteratively query the name server for
each available record type. |
- Tartalom
- checkdnsrr --
Adott Internet domainn�v vagy IP c�mnek megfelel� bejegyz�s l�t�nek
vizsg�lata a DNS rekordokban
- closelog -- Syslog (rendszer napl�) kapcsolat z�r�sa
- debugger_off -- A be�p�tett PHP debugger letilt�sa
- debugger_on -- A be�p�tett PHP debugger enged�lyez�se
- define_syslog_variables -- A rendszer napl�z�val kapcsolatos konstansok inicializ�l�sa
- dns_check_record -- Synonym for checkdnsrr()
- dns_get_mx -- Synonym for getmxrr()
- dns_get_record --
Fetch DNS Resource Records associated with a hostname
- fsockopen --
Internet vagy Unix domain socket megnyit�sa
- gethostbyaddr --
Adott IP c�mnek megfelel� hostn�v kinyer�se
- gethostbyname --
Kinyeri a megadott Internet hostnak megfelel� IP c�met
- gethostbynamel --
Adott hostn�vnek megfelel� �sszes IP c�m list�j�nak kinyer�se
- getmxrr --
Adott Internet hostn�vhez tartoz� MX rekordok kigy�jt�se
- getprotobyname --
N�vvel megadott protokol sz�m�t adja vissza
- getprotobynumber --
Sz�mmal megadott protokol nev�t adja vissza
- getservbyname --
Adott szolg�ltat�st�pus portsz�m�nak megallap�t�sa n�v alapj�n
- getservbyport --
Adott porton lev� szolg�ltat�s nev�nek meg�llap�t�sa
- ip2long --
Pontozott IP c�met tartalmaz� karakterl�ncot val�di IP cimm� alak�t
- long2ip --
N�gy byteon t�rolt (IPv4) h�l�zatc�met alak�t az Internet szabv�nynak
megfelel� pontozott form�ra
- openlog -- A rendszer napl�z�val val� kapcsolat nyit�sa
- pfsockopen --
Tart�s Internet vagy Unix domain socket-kapcsolat megnyit�sa
- socket_get_status --
Egy m�r megl�v� socket adatainak kinyer�se
- socket_set_blocking -- Adott socketen a blokkol�/nem blokkol� m�d kapcsolgat�sa
- socket_set_timeout -- Adott socket id�t�ll�p�si peri�dus�nak �ll�t�sa
- syslog -- Syslog �zenet l�trehoz�sa
User Contributed Notes
H�l�zatkezel�si F�ggv�nyek |
  |
oliviert at videotron dot ca
18-Feb-1999 09:31 |
|
If u wanna do one of these function on windows95, u have to install the
lastest winsock before , if else php will crash with a message of
wsock32.dll
()
|
|
philip at cornado dot c()m
04-Jul-2001 09:18 |
|
View a few Networking PHP PEAR classes here :
|
|
philip at cornado dot c()m
04-Jul-2001 09:20 |
|
More socket functions can be seen here :
|
|
philippe-at-cyberabuse.org
15-Dec-2001 02:46 |
|
PHP miss CIDR functions.
This one will convert a CIDR like
this:
0.0.0.0/16 -> 0.0.0.0 - 0.0.255.255
127.0/16 ->
127.0.0.0 - 127.0.255.255
etc...
function cidrconv($net)
{
$start=strtok($net,"/");
$n=3-substr_count($net,
".");
if ($n>0) { for ($i=$n;$i>0;$i--)
$start.=".0";
}
$bits1=str_pad(decbin(ip2long($start)),32,"0","STR_PAD_LEFT");
$net=pow(2,(32-substr(strstr($net,"/"),1)))-1;
$bits2=str_pad(decbin($net),32,"0","STR_PAD_LEFT");
for
($i=0;$i<32;$i++) {
if ($bits1[$i]==$bits2[$i])
$final.=$bits1[$i];
if ($bits1[$i]==1 and $bits2[$i]==0)
$final.=$bits1[$i];
if ($bits1[$i]==0 and $bits2[$i]==1)
$final.=$bits2[$i];
}
return $start." -
".long2ip(bindec($final));
}
|
|
philippe-at-cyberabuse.org
12-Oct-2002 10:49 |
|
... and this one will do the opposite (o return NULL for invalid netblocks)
:
1.0.0.0 1.0.255.255 -> 1.0.0.0/16
1.0.0.0 1.3.255.255 ->
1.0.0.0/14
192.168.0.0 192.168.0.255 ->
192.168.0.0/24
function ip2cidr($ip_start,$ip_end)
{
if(long2ip(ip2long($ip_start))!=$ip_start or
long2ip(ip2long($ip_end))!=$ip_end) return NULL;
$ipl_start=(int)ip2long($ip_start);
$ipl_end=(int)ip2long($ip_end);
if($ipl_start>0
&& $ipl_end<0) $delta=($ipl_end+4294967296)-$ipl_start;
else
$delta=$ipl_end-$ipl_start;
$netmask=str_pad(decbin($delta),32,"0","STR_PAD_LEFT");
if(ip2long($ip_start)==0
&& substr_count($netmask,"1")==32) return
"0.0.0.0/0";
if($delta<0 or ($delta>0 &&
$delta%2==0)) return NULL;
for($mask=0;$mask<32;$mask++)
if($netmask[$mask]==1)
break;
if(substr_count($netmask,"0")!=$mask) return
NULL;
return "$ip_start/$mask";
}
|
|
trevor-hemsley at nospam dot dial dot pipex dot com
16-Oct-2002 06:53 |
|
Previous example of IP range to CIDR list does not cope with ranges as well
as the perl Net::Netmask range2cidrlist() function. In PHP this looks
like
<?
function imask($this)
{
// use base_convert not
dechex because dechex is broken and returns 0x80000000 instead of
0xffffffff
return base_convert((pow(2,32) - pow(2, (32-$this)))), 10,
16);
}
function imaxblock($ibase, $tbit)
{
while ($tbit
> 0)
{
$im = hexdec(imask($tbit-1));
$imand = $ibase &
$im;
if ($imand !=
$ibase)
{
break;
}
$tbit--;
}
return
$tbit;
}
function range2cidrlist($istart, $iend)
{
// this
function returns an array of cidr lists that map the range given
$s =
explode(".", $istart);
// PHP ip2long does not handle leading
zeros on IP addresses! 172.016 comes back as 172.14, seems to be treated
as octal!
$start = "";
$dot = "";
while
(list($key,$val) = each($s))
{
$start =
sprintf("%s%s%d",$start,$dot,$val);
$dot =
".";
}
$end = "";
$dot = "";
$e
= explode(".",$iend);
while (list($key,$val) =
each($e))
{
$end =
sprintf("%s%s%d",$end,$dot,$val);
$dot =
".";
}
$start = ip2long($start);
$end =
ip2long($end);
$result = array();
while ($end >
$start)
{
$maxsize = imaxblock($start,32);
$x = log($end - $start
+ 1)/log(2);
$maxdiff = floor(32 - floor($x));
$ip =
long2ip($start);
if ($maxsize < $maxdiff)
{
$maxsize =
$maxdiff;
}
array_push($result,"$ip/$maxsize");
$start
+= pow(2, (32-$maxsize));
}
return $result;
}
?>
|
|
|
|
| |
PHP k�zik�nyv
F�ggv�ny referencia
Apache
muscat_setup