function getip ()
{
if (getenv('http_client_ip')) {
$ip = getenv('http_client_ip');
} else if (getenv('http_x_forwarded_for')) {
$ip = getenv('http_x_forwarded_for');
} else if (getenv('remote_addr')) {
$ip = getenv('remote_addr');
} else {
$ip = $_server['remote_addr'];
}
return $ip;
}
function getipaddres ($ip = '')
{
if($ip == ''){
$ip = getip();
}
if($ip == '127.0.0.1'){
return $ip_addres = '本地机器';
}
$recordlength = 17+22+13+47+12+1;
$ret = ereg('^([0-9]+).([0-9]+).([0-9]+).([0-9]+)$', $ip, $ips教程ection);
if($ret == false){$ip_addres = 'ip地址有错';}
for($i = 1; $i <= 4; $i ++){
if($ipsection[$i] > 255){
$ip_addres = 'ip地址有错';
} else {
$thisip .= sprintf('%03.0f', $ipsection[$i]). (($i<4) ? '.' : '');
}
}
$fp= fopen($obj['rootdir'].'data/ip.txt', 'rb');
if($fp == null){
$ip_addres = 'ip记录文件打开出错';
}
fseek($fp, 0, seek_end);
$datafieldbegin = 0xc2;
$recordcount = floor((ftell($fp)-$datafieldbegin)/$recordlength);
if($recordcount <= 1){
$ip_addres = 'ip记录文件打开出错';
} else {
$rangb = 0;
$range = $recordcount;
while($rangb<$range-1){
$recno = floor(($rangb+$range)/2);
fseek($fp,$recno*$recordlength+$datafieldbegin, seek_set);
$buf = fread($fp, $recordlength);
if(strlen($buf) == 0){
return false;
}
$startip = (substr($buf, 0, 17));
$endip = trim(substr($buf, 17, 22));
$country = trim(substr($buf, 17+22, 13));
$local = trim(substr($buf, 17+22+13, 47));
if (strcmp($thisip, $startip) >= 0 && strcmp($thisip, $endip)<=0){
break;
}
if(strcmp($thisip, $startip) > 0){
$rangb = $recno;
} else {
$range = $recno;
}
}
if(!($rangb < $range - 1)){
$ip_addres= '未知地址！';
} else {
$ip_addres = $country;
$ip_addres .= $local;
}
}
fclose($fp);
return $ip_addres;
}
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