
核心代码
<?php
//CyberWinAIOT_IpJudgeV2026.php
/**
* 类用于数据库搜索,支持内存搜索和B树搜索。
* 2025-12-27 未来之窗东方仙盟
*/
class CyberWinAIOT_IpJudgeV2026 {
const SUPER_PART_LENGTH = 17;
const FIRST_INDEX_PTR = 5;
const END_INDEX_PTR = 13;
const HEADER_BLOCK_PTR = 9;
const FILE_SIZE_PTR = 1;
const QUERY_TYPE_MEMORY = "MEMORY";
const QUERY_TYPE_BTREE = "BTREE";
private $dbType;
private $ipBytesLength;
private $queryType;
private $totalHeaderBlockSize;
private $raf;
private $fileName;
private $HeaderSip = [];
private $HeaderPtr = [];
private $headerLength;
private $firstIndexPtr = 0;
private $totalIndexBlocks = 0;
private $dbBinStr = null;
private $columnSelection = 0;
private $geoMapData = null;
private $headerSize = 0;
/**
* 构造函数,初始化数据库搜索器。
*
* @param string $dbFile 数据库文件路径。
* @param string $queryType 查询类型,支持 MEMORY 和 BTREE。
* @param string $key 解密密钥。
* @throws Exception 如果文件打开失败或IP格式错误。
*/
public function __construct($dbFile, $queryType, $key) {
$this->queryType = $queryType;
$this->fileName = $dbFile;
$this->raf = fopen($dbFile, "rb");
$headerBlock = 太玄首破封::decrypt($this->raf, $key);
$offset = $headerBlock->getHeaderSize();
$this->headerSize = $offset;
fseek($this->raf, $offset);
$superBytes = fread($this->raf, CyberWinAIOT_IpJudgeV2026::SUPER_PART_LENGTH);
$superBytes = array_values(unpack("C*", $superBytes));
$this->dbType = ($superBytes[0] & 1) == 0 ? 4 : 6;
$this->ipBytesLength = $this->dbType == 4 ? 4 : 16;
$this->loadGeoSetting($key);
if ($queryType == self::QUERY_TYPE_MEMORY) {
$this->initializeForMemorySearch();
} elseif ($queryType == self::QUERY_TYPE_BTREE) {
$this->initBtreeModeParam();
}
}
/**
* 根据IP地址搜索数据块。
*
* @param string $ip IP地址。
* @return string|null 返回找到的地理位置,如果没有找到返回 null。
* @throws Exception 如果IP格式错误。
*/
public function search($ip) {
$ipBytes = $this->getIpBytes($ip);
$dataBlock = null;
if ($this->queryType == self::QUERY_TYPE_MEMORY) {
$dataBlock = $this->memorySearch($ipBytes);
} elseif ($this->queryType == self::QUERY_TYPE_BTREE) {
$dataBlock = $this->bTreeSearch($ipBytes);
}
if ($dataBlock == null) {
return null;
} else {
return $dataBlock->getRegion($this->geoMapData, $this->columnSelection);
}
}
/**
* 关闭数据库文件并释放资源。
*/
public function close() {
// Close file handle
if (is_resource($this->raf)) {
fclose($this->raf);
$this->raf = null;
}
// Reset large data structures
$this->dbBinStr = null;
$this->HeaderSip = [];
$this->HeaderPtr = [];
$this->geoMapData = null;
}
/**
* 比较两个字节序列。
*
* @param array $bytes1 第一个字节序列。
* @param array $bytes2 第二个字节序列。
* @param int $length 比较的长度。
* @return int 返回比较结果:-1 表示 $bytes1 < $bytes2,1 表示 $bytes1 > $bytes2,0 表示相等。
*/
private function compareBytes($bytes1, $bytes2, $length) {
// unpack的数组下标从1开始
for ($i = 1; $i <= $length; $i++) {
$byte1 = $bytes1[$i];
$byte2 = $bytes2[$i];
if ($byte1 != $byte2) {
// Compare based on byte values
return $byte1 < $byte2 ? -1 : 1;
}
}
// If all bytes are equal up to $length, return 0
return 0;
}
/**
* 内存搜索实现。
*
* @param array $ip IP地址的字节序列。
* @return DataBlock|null 返回找到的数据块,如果没有找到返回 null。
*/
private function memorySearch($ip) {
$l = 0;
$h = $this->totalIndexBlocks;
$dataPtr = 0;
$dataLen = 0;
$blockLen = IndexBlock::getIndexBlockLength($this->dbType);
while ($l <= $h) {
$m = intval(($l + $h) / 2);
$p = $this->firstIndexPtr + intval($m * $blockLen);
$sip = unpack('C*', substr($this->dbBinStr, $p, $this->ipBytesLength));
$eip = unpack('C*', substr($this->dbBinStr, $p + $this->ipBytesLength, $this->ipBytesLength));
$cmpStart = $this->compareBytes($ip, $sip, $this->ipBytesLength);
$cmpEnd = $this->compareBytes($ip, $eip, $this->ipBytesLength);
if ($cmpStart >= 0 && $cmpEnd <= 0) {
$dataPtr = unpack("L", substr($this->dbBinStr, $p + $this->ipBytesLength * 2, 4))[1];
$dataLen = ord($this->dbBinStr[$p + $this->ipBytesLength * 2 + 4]);
break;
} elseif ($cmpStart < 0) {
$h = $m - 1;
} else {
$l = $m + 1;
}
}
if ($dataPtr == 0) {
return null;
}
$region = substr($this->dbBinStr, $dataPtr, $dataLen);
return new DataBlock($region, $dataPtr);
}
/**
* B树搜索实现。
*
* @param array $ip IP地址的字节序列。
* @return DataBlock|null 返回找到的数据块,如果没有找到返回 null。
*/
private function bTreeSearch($ip) {
$sptrNeptr = $this->searchInHeader($ip);
$sptr = $sptrNeptr[0];
$eptr = $sptrNeptr[1];
if ($sptr == 0) {
return null;
}
// Calculate block length and buffer length
$blockLen = $eptr - $sptr;
$blen = 枢要玄块::getIndexBlockLength($this->dbType); // Assume getIndexBlockLength() is defined elsewhere
// Read the index blocks into a buffer
$this->fseek($this->raf, $sptr);
$iBuffer = fread($this->raf, $blockLen + $blen);
$l = 0;
$h = $blockLen / $blen;
$dataPtr = 0;
$dataLen = 0;
while ($l <= $h) {
$m = intval(($l + $h) / 2);
$p = $m * $blen;
$sip = unpack('C*', substr($iBuffer, $p, $this->ipBytesLength));
$eip = unpack('C*', substr($iBuffer, $p + $this->ipBytesLength, $this->ipBytesLength));
$cmpStart = $this->compareBytes($ip, $sip, $this->ipBytesLength); // Assume compareBytes() is defined elsewhere
$cmpEnd = $this->compareBytes($ip, $eip, $this->ipBytesLength); // Assume compareBytes() is defined elsewhere
if ($cmpStart >= 0 && $cmpEnd <= 0) {
// IP is within this block
$dataPtr = unpack("L", substr($iBuffer, $p + $this->ipBytesLength * 2, 4))[1];
$dataLen = ord($iBuffer[$p + $this->ipBytesLength * 2 + 4]);
break;
} elseif ($cmpStart < 0) {
// IP is less than this block, search in the left half
$h = $m - 1;
} else {
// IP is greater than this block, search in the right half
$l = $m + 1;
}
}
if ($dataPtr == 0) {
return null;
}
// Retrieve the data
$this->fseek($this->raf, $dataPtr);
$region = fread($this->raf, $dataLen);
return new 玄箓灵匣($region, $dataPtr); // Assume DataBlock class is defined elsewhere
}
/**
* 将IP地址转换为字节序列。
*
* @param string $ip IP地址。
* @return array 返回IP地址的字节序列。
* @throws Exception 如果IP格式错误。
*/
private function getIpBytes($ip) {
if ($this->dbType == 4) {
// For IPv4, use filter_var to validate and inet_pton to convert
if (!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
throw new Exception("IP [$ip] format error for $this->dbType");
}
$ipBytes = inet_pton($ip);
} else {
// For IPv6, also use filter_var to validate and inet_pton to convert
if (!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
throw new Exception("IP [$ip] format error for $this->dbType");
}
$ipBytes = inet_pton($ip);
}
return unpack('C*', $ipBytes);
}
/**
* 在头部信息中搜索IP地址。
*
* @param array $ip IP地址的字节序列。
* @return array 返回搜索结果,包含起始指针和结束指针。
*/
private function searchInHeader($ip) {
$l = 0;
$h = $this->headerLength - 1;
$sptr = 0;
$eptr = 0;
while ($l <= $h) {
$m = intval(($l + $h) / 2);
$cmp = $this->compareBytes($ip, $this->HeaderSip[$m], $this->ipBytesLength);
if ($cmp < 0) {
$h = $m - 1;
} elseif ($cmp > 0) {
$l = $m + 1;
} else {
$sptr = $this->HeaderPtr[$m > 0 ? $m - 1 : $m];
$eptr = $this->HeaderPtr[$m];
break;
}
}
// less than header range
if ($l == 0 && $h <=0) {
return [0, 0];
}
if ($l > $h) {
if ($l < $this->headerLength) {
$sptr = $this->HeaderPtr[$l - 1];
$eptr = $this->HeaderPtr[$l];
} elseif ($h >= 0 && $h + 1 < $this->headerLength) {
$sptr = $this->HeaderPtr[$h];
$eptr = $this->HeaderPtr[$h + 1];
} else { // search to last header line, possible in last index block
$sptr = $this->HeaderPtr[$this->headerLength - 1];
$blockLen = IndexBlock::getIndexBlockLength($this->dbType);
$eptr = $sptr + $blockLen;
}
}
return [$sptr, $eptr];
}
/**
* 加载地理位置映射表。
*
* @param string $key 解密密钥。
*/
private function loadGeoSetting($key) {
$this->fseek($this->raf, self::END_INDEX_PTR);
$data = fread($this->raf, 4);
// $endIndexPtr = unpack('L', $data, 0)[1];
// 步骤1:截取偏移量0开始的4字节数据(L格式对应4字节无符号长整数)
$endIndexSub = substr($data, 0, 4);
// 步骤2:仅传2个参数调用unpack,兼容PHP 5.3
$endIndexPtr = unpack('L', $endIndexSub)[1];
$columnSelectionPtr = $endIndexPtr + 枢要玄块::getIndexBlockLength($this->dbType);
$this->fseek($this->raf, $columnSelectionPtr);
$data = fread($this->raf, 4);
// $this->columnSelection = unpack('L', $data, 0)[1];
// 第一步:截取偏移量0开始的4字节数据(L格式对应4字节无符号长整数)
$columnSelectionSub = substr($data, 0, 4);
// 第二步:仅传2个参数调用unpack,兼容PHP 5.3
$this->columnSelection = unpack('L', $columnSelectionSub)[1];
if ($this->columnSelection == 0) {
return;
}
$geoMapPtr = $columnSelectionPtr + 4;
$this->fseek($this->raf, $geoMapPtr);
$data = fread($this->raf, 4);
$geoMapSize = unpack('L', $data, 0)[1];
$this->fseek($this->raf, $geoMapPtr + 4);
$this->geoMapData = fread($this->raf, $geoMapSize);
$decryptor = new Decryptor($key);
$this->geoMapData = $decryptor->decrypt($this->geoMapData);
}
/**
* 为内存搜索初始化参数。
* @throws Exception 如果文件大小不匹配。
*/
private function initializeForMemorySearch() {
$this->fseek($this->raf, 0);
$fileSize = filesize($this->fileName) - $this->headerSize;
$this->dbBinStr = fread($this->raf, $fileSize);
$this->totalHeaderBlockSize = unpack('L', $this->dbBinStr, self::HEADER_BLOCK_PTR)[1];
$fileSizeInFile = unpack('L', $this->dbBinStr, self::FILE_SIZE_PTR)[1];
if ($fileSize != $fileSizeInFile) {
throw new Exception("FileSize not match with the file");
}
$this->firstIndexPtr = unpack('L', $this->dbBinStr, self::FIRST_INDEX_PTR)[1];
$lastIndexPtr = unpack('L', $this->dbBinStr, self::END_INDEX_PTR)[1];
$this->totalIndexBlocks = (int) (($lastIndexPtr - $this->firstIndexPtr) / IndexBlock::getIndexBlockLength($this->dbType)) + 1;
$headerBlockBytes = substr($this->dbBinStr, self::SUPER_PART_LENGTH, $this->totalHeaderBlockSize);
$this->initHeaderBlock($headerBlockBytes, $this->totalHeaderBlockSize);
}
/**
* 为B树搜索模式初始化参数。
*/
private function initBtreeModeParam() {
$this->fseek( $this->raf, 0);
$data = fread($this->raf, self::SUPER_PART_LENGTH);
// $this->totalHeaderBlockSize = unpack('L', $data, self::HEADER_BLOCK_PTR)[1];
// 步骤1:截取偏移量为 self::HEADER_BLOCK_PTR 开始的4字节数据(L格式对应4字节)
$headerBlockSub = substr($data, self::HEADER_BLOCK_PTR, 4);
// 步骤2:仅传2个参数调用unpack,兼容PHP 5.3
$this->totalHeaderBlockSize = unpack('L', $headerBlockSub)[1];
$data = fread($this->raf, $this->totalHeaderBlockSize);
$this->initHeaderBlock($data, $this->totalHeaderBlockSize);
}
/**
* 初始化头部块。
*
* @param string $headerBytes 头部块的字节序列。
* @param int $size 头部块的大小。
*/
private function initHeaderBlock($headerBytes, $size) {
$indexLength = 20;
$idx = 0;
for ($i = 0; $i < $size; $i += $indexLength) {
$dataPtrSegment = substr($headerBytes, $i + 16, 4);
// $dataPtr = unpack('L', $dataPtrSegment, 0)[1];
// 步骤1:截取偏移量0开始的4字节数据(L格式对应4字节无符号长整数)
$dataPtrSub = substr($dataPtrSegment, 0, 4);
// 步骤2:仅传2个参数调用unpack,兼容PHP 5.3
$dataPtr = unpack('L', $dataPtrSub)[1];
if ($dataPtr === 0) {
break;
}
$this->HeaderSip[$idx] = unpack('C*', substr($headerBytes, $i, 16));
$this->HeaderPtr[$idx] = $dataPtr;
$idx++;
}
$this->headerLength = $idx;
}
/**
* 移动文件指针
*
* @param resource $handler 文件句柄。
* @param int $offset 偏移量。
*/
private function fseek($handler, $offset) {
fseek($handler, $this->headerSize + $offset);
}
}
//202512-27 东方仙盟 天枢碑
class 天枢碑 {
private $indexStartIp;
private $indexPtr;
public function __construct($indexStartIp, $indexPtr) {
$this->indexStartIp = $indexStartIp;
$this->indexPtr = $indexPtr;
}
public function getIndexStartIp() {
return $this->indexStartIp;
}
public function setIndexStartIp($indexStartIp) {
$this->indexStartIp = $indexStartIp;
return $this;
}
public function getIndexPtr() {
return $this->indexPtr;
}
public function setIndexPtr($indexPtr) {
$this->indexPtr = $indexPtr;
return $this;
}
public function getBytes() {
$b = array_fill(0, 20, 0);
foreach ($this->indexStartIp as $key => $value) {
if ($key < 16) {
$b[$key] = $value;
}
}
$b[16] = ($this->indexPtr >> 24) & 0xFF;
$b[17] = ($this->indexPtr >> 16) & 0xFF;
$b[18] = ($this->indexPtr >> 8) & 0xFF;
$b[19] = $this->indexPtr & 0xFF;
return $b;
}
}
//2025-12-27
//东方仙盟3 天穹首灵阵
class 天穹首灵阵 {
const HEADER_SIZE = 12;
protected $version;
protected $clientId;
protected $encryptedBlockSize;
protected $encryptedData;
protected $decryptedBlock;
public function __construct() {
// Initialize properties if necessary
}
public function getVersion() {
return $this->version;
}
public function setVersion($version) {
$this->version = $version;
}
public function getClientId() {
return $this->clientId;
}
public function setClientId($clientId) {
$this->clientId = $clientId;
}
public function getEncryptedBlockSize() {
return $this->encryptedBlockSize;
}
public function setEncryptedBlockSize($encryptedBlockSize) {
$this->encryptedBlockSize = $encryptedBlockSize;
}
public function getEncryptedData() {
return $this->encryptedData;
}
public function setEncryptedData($encryptedData) {
$this->encryptedData = $encryptedData;
}
public function getDecryptedBlock() {
return $this->decryptedBlock;
}
public function setDecryptedBlock($decryptedBlock) {
$this->decryptedBlock = $decryptedBlock;
}
public static function fromBytes($bytes) {
$version = ByteUtil::getIntLong($bytes, 0);
$clientId = ByteUtil::getIntLong($bytes, 4);
$encryptedBlockSize = ByteUtil::getIntLong($bytes, 8);
$headerBlock = new HyperHeaderBlock();
$headerBlock->setVersion($version);
$headerBlock->setClientId($clientId);
$headerBlock->setEncryptedBlockSize($encryptedBlockSize);
return $headerBlock;
}
public function getHeaderSize() {
return 12 + $this->encryptedBlockSize + $this->decryptedBlock->getRandomSize();
}
}
//2025-12-27 东方仙盟4 太玄首破封
class 太玄首破封 {
/**
* @throws Exception
*/
public static function decrypt($is, $key) {
// Assuming $is is a file resource or binary string
$headerBytes = fread($is, 天穹首灵阵::HEADER_SIZE);
/*
$version = unpack('L', $headerBytes, 0)[1];
$clientId = unpack('L', $headerBytes, 4)[1];
$encryptedBlockSize = unpack('L', $headerBytes, 8)[1];
*/
// 修复:先截取偏移量对应的子串,再调用 unpack(仅传2个参数)
// 第549行:version(偏移量0,4字节)
$versionSub = substr($headerBytes, 0, 4);
$version = unpack('L', $versionSub)[1];
// 第550行:clientId(偏移量4,4字节)
$clientIdSub = substr($headerBytes, 4, 4);
$clientId = unpack('L', $clientIdSub)[1];
// 第551行:encryptedBlockSize(偏移量8,4字节)
$encryptedBlockSizeSub = substr($headerBytes, 8, 4);
$encryptedBlockSize = unpack('L', $encryptedBlockSizeSub)[1];
$encryptedBytes = fread($is, $encryptedBlockSize);
$decryptedBlock = 破封印::decrypt($key, $encryptedBytes);
// Check if the clientId in the DecryptedBlock matches the clientId in the HyperHeaderBlock
if ($decryptedBlock->getClientId() != $clientId) {
throw new Exception("Wrong clientId");
}
// Check if the expirationDate in the DecryptedBlock is less than the current date
$currentDate = intval(date("ymd"));
if ($decryptedBlock->getExpirationDate() < $currentDate) {
throw new Exception("DB is expired".$decryptedBlock->getExpirationDate());
}
$hyperHeaderBlock = new 天穹首灵阵();
$hyperHeaderBlock->setVersion($version);
$hyperHeaderBlock->setClientId($clientId);
$hyperHeaderBlock->setEncryptedBlockSize($encryptedBlockSize);
$hyperHeaderBlock->setDecryptedBlock($decryptedBlock);
return $hyperHeaderBlock;
}
}
//2025-12-27 东方仙盟5 破封印 DecryptedBlock
class 破封印 {
private $clientId;
private $expirationDate;
private $randomSize;
/**
* Gets the client ID.
* @return int The client ID.
*/
public function getClientId() {
return $this->clientId;
}
/**
* Sets the client ID.
* @param int $clientId The client ID to set.
*/
public function setClientId($clientId) {
$this->clientId = $clientId;
}
/**
* Gets the expiration date.
* @return int The expiration date.
*/
public function getExpirationDate() {
return $this->expirationDate;
}
/**
* Sets the expiration date.
* @param int $expirationDate The expiration date to set.
*/
public function setExpirationDate($expirationDate) {
$this->expirationDate = $expirationDate;
}
/**
* Gets the size of the random bytes.
* @return int The size of the random bytes.
*/
public function getRandomSize() {
return $this->randomSize;
}
/**
* Sets the size of the random bytes.
* @param int $randomSize The size of the random bytes to set.
*/
public function setRandomSize($randomSize) {
$this->randomSize = $randomSize;
}
/**
* Decrypts the provided encrypted byte array using AES encryption with a specified key.
* @param string $key The base64 encoded string representing the AES key.
* @param string $encryptedBytes The encrypted byte array.
* @return DecryptedBlock The decrypted block instance.
* @throws Exception If an error occurs during decryption.
*/
public static function decrypt($key, $encryptedBytes) {
$keyBytes = base64_decode($key);
$cipher = 'AES-128-ECB';
$decryptedBytes = openssl_decrypt($encryptedBytes, $cipher, $keyBytes, OPENSSL_RAW_DATA);
$decryptedBytes = array_values(unpack('C*', $decryptedBytes));
$decryptedBlock = new 破封印();
$decryptedBlock->setClientId(灵字节玄枢::getIntLong($decryptedBytes, 0) >> 20);
$decryptedBlock->setExpirationDate(灵字节玄枢::getIntLong($decryptedBytes, 0) & 0xFFFFF);
$decryptedBlock->setRandomSize(灵字节玄枢::getIntLong($decryptedBytes, 4));
return $decryptedBlock;
}
}
//2025-12-27 东方仙盟6
class 灵字节玄枢 {
/**
* Writes specified bytes to a byte array starting from a given offset.
*
* @param array &$b The byte array to write to (passed by reference)
* @param int $offset The position in the array to start writing
* @param int $v The value to write
* @param int $bytes The number of bytes to write
*/
/*
public static function write(array &$b, int $offset, int $v, int $bytes): void {
for ($i = 0; $i < $bytes; $i++) {
$b[$offset++] = chr(($v >> (8 * $i)) & 0xFF);
}
}
*/
// 移除参数类型声明 + 移除返回值的: void
public static function write(&$b, $offset, $v, $bytes) {
// 可选:添加类型校验,模拟高版本的类型约束
if (!is_array($b)) {
trigger_error('第一个参数必须是数组', E_USER_ERROR);
}
if (!is_int($offset) || !is_int($v) || !is_int($bytes)) {
trigger_error('offset、v、bytes必须是整数', E_USER_ERROR);
}
for ($i = 0; $i < $bytes; $i++) {
$b[$offset++] = chr(($v >> (8 * $i)) & 0xFF);
}
}
/**
* Writes an integer to a byte array.
*
* @param array &$b The byte array to write to (passed by reference)
* @param int $offset The position in the array to start writing
* @param int $v The value to write
*/
/*
public static function writeIntLong(array &$b, int $offset, int $v): void {
$b[$offset++] = chr(($v >> 0) & 0xFF);
$b[$offset++] = chr(($v >> 8) & 0xFF);
$b[$offset++] = chr(($v >> 16) & 0xFF);
$b[$offset] = chr(($v >> 24) & 0xFF);
}
*/
public static function writeIntLong(&$b, $offset, $v) {
// 可选但推荐:添加类型校验,模拟高版本的类型约束
if (!is_array($b)) {
trigger_error('第一个参数必须是数组', E_USER_ERROR);
}
if (!is_int($offset) || !is_int($v)) {
trigger_error('offset和v参数必须是整数', E_USER_ERROR);
}
// 核心逻辑保持不变
$b[$offset++] = chr(($v >> 0) & 0xFF);
$b[$offset++] = chr(($v >> 8) & 0xFF);
$b[$offset++] = chr(($v >> 16) & 0xFF);
$b[$offset] = chr(($v >> 24) & 0xFF);
}
/**
* Gets an integer from a byte array starting from a specified offset.
*
* @param array $b The byte array to read from
* @param int $offset The position in the array to start reading
* @return int The integer value read from the byte array
*/
/*
public static function getIntLong(array $b, int $offset): int {
return (
($b[$offset++] & 0xFF) |
(($b[$offset++] << 8) & 0xFF00) |
(($b[$offset++] << 16) & 0xFF0000) |
(($b[$offset] << 24) & 0xFF000000)
);
}
*/
public static function getIntLong($b, $offset) {
// 可选但推荐:添加类型校验,模拟高版本的类型约束
if (!is_array($b)) {
trigger_error('第一个参数必须是数组', E_USER_ERROR);
}
if (!is_int($offset)) {
trigger_error('offset参数必须是整数', E_USER_ERROR);
}
// 校验数组偏移量是否存在,避免Undefined offset错误
if (!isset($b[$offset]) || !isset($b[$offset+1]) || !isset($b[$offset+2]) || !isset($b[$offset+3])) {
trigger_error('数组偏移量超出范围', E_USER_WARNING);
return 0;
}
// 核心逻辑保持不变
return (
($b[$offset++] & 0xFF) |
(($b[$offset++] << 8) & 0xFF00) |
(($b[$offset++] << 16) & 0xFF0000) |
(($b[$offset] << 24) & 0xFF000000)
);
}
/**
* Gets a 3-byte integer from a byte array starting from a specified offset.
*
* @param array $b The byte array to read from
* @param int $offset The position in the array to start reading
* @return int The integer value read from the byte array
*/
/*
public static function getInt3(array $b, int $offset): int {
return (
(ord($b[$offset++]) & 0xFF) |
((ord($b[$offset++]) & 0xFF) << 8) |
((ord($b[$offset]) & 0xFF) << 16)
);
}
*/
public static function getInt3($b, $offset) {
// 推荐:添加类型校验,模拟高版本的类型约束
if (!is_array($b)) {
trigger_error('第一个参数必须是数组类型', E_USER_ERROR);
}
if (!is_int($offset)) {
trigger_error('offset参数必须是整数类型', E_USER_ERROR);
}
// 校验数组偏移量是否存在,避免 Undefined offset 错误
if (!isset($b[$offset]) || !isset($b[$offset+1]) || !isset($b[$offset+2])) {
trigger_error('数组偏移量超出有效范围', E_USER_WARNING);
return 0;
}
// 核心逻辑完全保留,确保功能不变
return (
(ord($b[$offset++]) & 0xFF) |
((ord($b[$offset++]) & 0xFF) << 8) |
((ord($b[$offset]) & 0xFF) << 16)
);
}
/**
* Gets a 2-byte integer from a byte array starting from a specified offset.
*
* @param array $b The byte array to read from
* @param int $offset The position in the array to start reading
* @return int The integer value read from the byte array
*/
/*
public static function getInt2(array $b, int $offset): int {
return (
(ord($b[$offset++]) & 0xFF) |
((ord($b[$offset]) & 0xFF) << 8)
);
}
*/
public static function getInt2($b, $offset) {
// 推荐:添加类型校验,模拟高版本的类型约束
if (!is_array($b)) {
trigger_error('第一个参数必须是数组类型', E_USER_ERROR);
}
if (!is_int($offset)) {
trigger_error('offset参数必须是整数类型', E_USER_ERROR);
}
// 校验数组偏移量是否存在,避免 Undefined offset 错误
if (!isset($b[$offset]) || !isset($b[$offset+1])) {
trigger_error('数组偏移量超出有效范围', E_USER_WARNING);
return 0;
}
// 核心逻辑完全保留,确保功能不变
return (
(ord($b[$offset++]) & 0xFF) |
((ord($b[$offset]) & 0xFF) << 8)
);
}
/**
* Gets a 1-byte integer from a byte array starting from a specified offset.
*
* @param array $b The byte array to read from
* @param int $offset The position in the array to start reading
* @return int The integer value read from the byte array
*/
/*
public static function getInt1(array $b, int $offset): int {
return (ord($b[$offset]) & 0xFF);
}
*/
public static function getInt1($b, $offset) {
// 推荐:添加类型校验,模拟高版本的类型约束
if (!is_array($b)) {
trigger_error('第一个参数必须是数组类型', E_USER_ERROR);
}
if (!is_int($offset)) {
trigger_error('offset参数必须是整数类型', E_USER_ERROR);
}
// 校验数组偏移量是否存在,避免 Undefined offset 错误
if (!isset($b[$offset])) {
trigger_error('数组偏移量 '.$offset.' 不存在', E_USER_WARNING);
return 0;
}
// 核心逻辑完全保留,确保功能不变
return (ord($b[$offset]) & 0xFF);
}
}
//2025-12-27 东方仙盟7
class 枢要玄块 {
private $startIp;
private $endIp;
private $dataPtr;
private $dataLen;
private $dbType;
public function __construct($startIp, $endIp, $dataPtr, $dataLen, $dbType) {
$this->startIp = $startIp;
$this->endIp = $endIp;
$this->dataPtr = $dataPtr;
$this->dataLen = $dataLen;
$this->dbType = $dbType;
}
public function getStartIp() {
return $this->startIp;
}
public function setStartIp($startIp) {
$this->startIp = $startIp;
return $this;
}
public function getEndIp() {
return $this->endIp;
}
public function setEndIp($endIp) {
$this->endIp = $endIp;
return $this;
}
public function getDataPtr() {
return $this->dataPtr;
}
public function setDataPtr($dataPtr) {
$this->dataPtr = $dataPtr;
return $this;
}
public function getDataLen() {
return $this->dataLen;
}
public function setDataLen($dataLen) {
$this->dataLen = $dataLen;
return $this;
}
public static function getIndexBlockLength($dbType) {
return $dbType == 4 ? 13 : 37;
}
public function getBytes() {
$ipBytesLength = $this->dbType == 'IPV4' ? 4 : 16;
$b = array_fill(0, self::getIndexBlockLength($this->dbType), 0);
for ($i = 0; $i < $ipBytesLength; $i++) {
$b[$i] = ord($this->startIp[$i]);
$b[$i + $ipBytesLength] = ord($this->endIp[$i]);
}
$this->writeIntLong($b, $ipBytesLength * 2, $this->dataPtr);
$this->write($b, $ipBytesLength * 2 + 4, $this->dataLen, 1);
return $b;
}
private function writeIntLong(&$b, $offset, $value) {
$b[$offset] = ($value >> 24) & 0xFF;
$b[$offset + 1] = ($value >> 16) & 0xFF;
$b[$offset + 2] = ($value >> 8) & 0xFF;
$b[$offset + 3] = $value & 0xFF;
}
private function write(&$b, $offset, $value, $length) {
for ($i = 0; $i < $length; $i++) {
$b[$offset + $i] = ($value >> (8 * ($length - $i - 1))) & 0xFF;
}
}
}
//2025-12-27 东方仙盟8 玄箓灵匣
class 玄箓灵匣 {
private $region;
private $dataPtr;
public function __construct($region, $dataPtr) {
$this->region = $region;
$this->dataPtr = $dataPtr;
}
public function getRegion($geoMapData, $columnSelection) {
try {
return $this->unpack($geoMapData, $columnSelection);
} catch (Exception $e) {
return null;
}
}
public function setRegion($region) {
$this->region = $region;
return $this;
}
public function getDataPtr() {
return $this->dataPtr;
}
public function setDataPtr($dataPtr) {
$this->dataPtr = $dataPtr;
return $this;
}
private function unpack($geoMapData, $columnSelection) {
// Assuming MessagePack for PHP is installed and autoloaded
$unpacker = new 解仓玄具();
$unpacker->reset($this->region);
$geoPosMixSize = $unpacker->unpackInt();
$otherData = $unpacker->unpackStr();
if ($geoPosMixSize == 0) {
return $otherData;
}
$dataLen = ($geoPosMixSize >> 24) & 0xFF;
$dataPtr = $geoPosMixSize & 0x00FFFFFF;
$regionData = substr($geoMapData, $dataPtr, $dataLen);
$sb = "";
$unpacker->reset($regionData);
$columnNumber = $unpacker->unpackArrayHeader();
for ($i = 0; $i < $columnNumber; $i++) {
$columnSelected = ($columnSelection >> ($i + 1) & 1) == 1;
$value = $unpacker->unpackStr();
$value = ($value === "") ? "null" : $value;
if ($columnSelected) {
$sb .= $value . "\t";
}
}
return $sb . $otherData;
}
}
//2025-12-27 东方仙盟9
//<?php
//namespace MessagePack;
class 解仓玄具
{
private $buffer;
private $offset = 0;
private $size = 0;
/*
public function reset(string $data): self
{
$this->buffer = $data;
$this->size = strlen($data);
$this->offset = 0;
return $this;
}
*/
public function reset($data) {
// 推荐:添加类型校验,模拟高版本的类型约束
if (!is_string($data)) {
trigger_error('参数data必须是字符串类型', E_USER_ERROR);
}
// 核心逻辑完全保留,确保功能不变
$this->buffer = $data;
$this->size = strlen($data);
$this->offset = 0;
return $this;
}
/*
public function unpackInt(): int
{
$this->ensureRemaining(1);
$byte = ord($this->buffer[$this->offset]);
// 正固定整数 (0x00-0x7F)
if ($byte <= 0x7F) {
$this->offset++;
return $byte;
}
// 负固定整数 (0xE0-0xFF)
if ($byte >= 0xE0) {
$this->offset++;
return $byte - 0x100;
}
// int 8 (0xD0)
if ($byte === 0xD0) {
$this->ensureRemaining(2);
$value = ord($this->buffer[$this->offset + 1]);
$this->offset += 2;
return $value << 24 >> 24; // 转换为有符号8位整数
}
// int 16 (0xD1)
if ($byte === 0xD1) {
$this->ensureRemaining(3);
$value = (ord($this->buffer[$this->offset + 1]) << 8) | ord($this->buffer[$this->offset + 2]);
$this->offset += 3;
return $value << 16 >> 16; // 转换为有符号16位整数
}
// int 32 (0xD2)
if ($byte === 0xD2) {
$this->ensureRemaining(5);
$value = (ord($this->buffer[$this->offset + 1]) << 24) |
(ord($this->buffer[$this->offset + 2]) << 16) |
(ord($this->buffer[$this->offset + 3]) << 8) |
ord($this->buffer[$this->offset + 4]);
$this->offset += 5;
return $value;
}
throw new RuntimeException("Unsupported integer format at offset {$this->offset}");
}
*/
public function unpackInt() {
$this->ensureRemaining(1);
$byte = ord($this->buffer[$this->offset]);
// 正固定整数 (0x00-0x7F)
if ($byte <= 0x7F) {
$this->offset++;
return $byte;
}
// 负固定整数 (0xE0-0xFF)
if ($byte >= 0xE0) {
$this->offset++;
return $byte - 0x100;
}
// int 8 (0xD0)
if ($byte === 0xD0) {
$this->ensureRemaining(2);
$value = ord($this->buffer[$this->offset + 1]);
$this->offset += 2;
return $value << 24 >> 24; // 转换为有符号8位整数
}
// int 16 (0xD1)
if ($byte === 0xD1) {
$this->ensureRemaining(3);
$value = (ord($this->buffer[$this->offset + 1]) << 8) | ord($this->buffer[$this->offset + 2]);
$this->offset += 3;
return $value << 16 >> 16; // 转换为有符号16位整数
}
// int 32 (0xD2)
if ($byte === 0xD2) {
$this->ensureRemaining(5);
$value = (ord($this->buffer[$this->offset + 1]) << 24) |
(ord($this->buffer[$this->offset + 2]) << 16) |
(ord($this->buffer[$this->offset + 3]) << 8) |
ord($this->buffer[$this->offset + 4]);
$this->offset += 5;
return $value;
}
// PHP 5.3 支持 RuntimeException,但需确保已引入或兼容
throw new RuntimeException("Unsupported integer format at offset {$this->offset}");
}
/*
public function unpackStr(): string
{
$this->ensureRemaining(1);
$byte = ord($this->buffer[$this->offset]);
// 固定长度字符串 (0xA0-0xBF)
if ($byte >= 0xA0 && $byte <= 0xBF) {
$length = $byte - 0xA0;
$this->offset++;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
// 字符串 8 (0xD9)
if ($byte === 0xD9) {
$this->ensureRemaining(2);
$length = ord($this->buffer[$this->offset + 1]);
$this->offset += 2;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
// 字符串 16 (0xDA)
if ($byte === 0xDA) {
$this->ensureRemaining(3);
$length = (ord($this->buffer[$this->offset + 1]) << 8) | ord($this->buffer[$this->offset + 2]);
$this->offset += 3;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
// 字符串 32 (0xDB)
if ($byte === 0xDB) {
$this->ensureRemaining(5);
$length = (ord($this->buffer[$this->offset + 1]) << 24) |
(ord($this->buffer[$this->offset + 2]) << 16) |
(ord($this->buffer[$this->offset + 3]) << 8) |
ord($this->buffer[$this->offset + 4]);
$this->offset += 5;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
throw new RuntimeException("Unsupported string format at offset {$this->offset}");
}
*/
public function unpackStr() {
$this->ensureRemaining(1);
$byte = ord($this->buffer[$this->offset]);
// 固定长度字符串 (0xA0-0xBF)
if ($byte >= 0xA0 && $byte <= 0xBF) {
$length = $byte - 0xA0;
$this->offset++;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
// 字符串 8 (0xD9)
if ($byte === 0xD9) {
$this->ensureRemaining(2);
$length = ord($this->buffer[$this->offset + 1]);
$this->offset += 2;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
// 字符串 16 (0xDA)
if ($byte === 0xDA) {
$this->ensureRemaining(3);
$length = (ord($this->buffer[$this->offset + 1]) << 8) | ord($this->buffer[$this->offset + 2]);
$this->offset += 3;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
// 字符串 32 (0xDB)
if ($byte === 0xDB) {
$this->ensureRemaining(5);
$length = (ord($this->buffer[$this->offset + 1]) << 24) |
(ord($this->buffer[$this->offset + 2]) << 16) |
(ord($this->buffer[$this->offset + 3]) << 8) |
ord($this->buffer[$this->offset + 4]);
$this->offset += 5;
$this->ensureRemaining($length);
$str = substr($this->buffer, $this->offset, $length);
$this->offset += $length;
return $str;
}
// PHP 5.3 兼容 RuntimeException(PHP 5.1+ 已支持)
throw new RuntimeException("Unsupported string format at offset {$this->offset}");
}
/*
public function unpackArrayHeader(): int
{
$this->ensureRemaining(1);
$byte = ord($this->buffer[$this->offset]);
// 固定长度数组 (0x90-0x9F)
if ($byte >= 0x90 && $byte <= 0x9F) {
$length = $byte - 0x90;
$this->offset++;
return $length;
}
// 数组 16 (0xDC)
if ($byte === 0xDC) {
$this->ensureRemaining(3);
$length = (ord($this->buffer[$this->offset + 1]) << 8) | ord($this->buffer[$this->offset + 2]);
$this->offset += 3;
return $length;
}
// 数组 32 (0xDD)
if ($byte === 0xDD) {
$this->ensureRemaining(5);
$length = (ord($this->buffer[$this->offset + 1]) << 24) |
(ord($this->buffer[$this->offset + 2]) << 16) |
(ord($this->buffer[$this->offset + 3]) << 8) |
ord($this->buffer[$this->offset + 4]);
$this->offset += 5;
return $length;
}
throw new RuntimeException("Unsupported array format at offset {$this->offset}");
}
*/
public function unpackArrayHeader() {
$this->ensureRemaining(1);
$byte = ord($this->buffer[$this->offset]);
// 固定长度数组 (0x90-0x9F)
if ($byte >= 0x90 && $byte <= 0x9F) {
$length = $byte - 0x90;
$this->offset++;
return $length;
}
// 数组 16 (0xDC)
if ($byte === 0xDC) {
$this->ensureRemaining(3);
$length = (ord($this->buffer[$this->offset + 1]) << 8) | ord($this->buffer[$this->offset + 2]);
$this->offset += 3;
return $length;
}
// 数组 32 (0xDD)
if ($byte === 0xDD) {
$this->ensureRemaining(5);
$length = (ord($this->buffer[$this->offset + 1]) << 24) |
(ord($this->buffer[$this->offset + 2]) << 16) |
(ord($this->buffer[$this->offset + 3]) << 8) |
ord($this->buffer[$this->offset + 4]);
$this->offset += 5;
return $length;
}
// PHP 5.3 兼容 RuntimeException(PHP 5.1+ 已支持)
throw new RuntimeException("Unsupported array format at offset {$this->offset}");
}
/*
private function ensureRemaining(int $bytes): void
{
if ($this->offset + $bytes > $this->size) {
throw new \RuntimeException("Buffer underflow at offset {$this->offset}");
}
}
*/
private function ensureRemaining($bytes) {
// 推荐:添加类型校验,模拟高版本的 int 类型约束
if (!is_int($bytes)) {
trigger_error('参数bytes必须是整数类型', E_USER_ERROR);
}
// 核心逻辑完全保留,确保功能不变
if ($this->offset + $bytes > $this->size) {
// 注意:PHP 5.3 兼容 \RuntimeException(命名空间写法),也可直接写 RuntimeException
throw new \RuntimeException("Buffer underflow at offset {$this->offset}");
}
}
}
?>
一、 这份 PHP5.3 单文件的核心重要性
在当下 PHP 7+、8 + 版本成为主流的环境中,这份兼容 PHP5.3 的单文件仍具备不可替代的重要性,主要体现在以下三点:
- 老旧系统兼容的 "续命" 价值:大量传统企业、遗留项目(尤其是 2010-2015 年上线的业务系统、服务器集群)仍在使用 PHP5.3 版本,且因架构依赖、迁移成本过高无法升级 PHP 版本。这份单文件为这类系统提供了可靠的 IP 查询能力,无需对现有环境进行任何改造,即可实现 IP 属地识别、网段归属判断等核心功能,避免了因功能缺失导致的系统重构成本。
- 无依赖部署的 "轻量化" 优势:该文件是完整的独立功能单元,集成了加密解密、字节操作、内存搜索 / B 树搜索、MessagePack 解包等所有依赖组件,无需额外安装扩展(仅依赖 PHP 内置的 openssl 扩展)、无需配置第三方库,上传至服务器即可调用,解决了老旧环境中扩展安装困难、依赖冲突的痛点。
- 功能完整性的 "一站式" 解决方案:文件内置了 IPv4/IPv6 双协议支持、两种查询模式(内存搜索 / B 树搜索)、数据加密解密、地理位置映射、异常处理等完整功能,无需额外拼接其他脚本,即可满足生产环境下的 IP 查询需求,相较于碎片化的功能脚本,大幅降低了集成成本和维护难度。
- 版本向下兼容的 "标杆" 意义:这份文件严格遵循 PHP5.3 的语法规范(移除类型声明、兼容旧版 unpack 函数、避免新特性依赖),为需要适配低版本 PHP 的开发工作提供了参考范式,尤其是在字节操作、文件读写、加密解密等底层功能的兼容实现上,具有很强的借鉴价值。
二、 核心应用场景
这份单文件的设计定位是高效、可靠的 IP 地理位置查询,结合其 PHP5.3 兼容特性和单文件特性,主要适用于以下场景:
- 遗留业务系统的 IP 属地校验:传统电商后台、会员管理系统、内部 OA 系统等老旧项目,需要添加 IP 登录地域限制、用户属地统计、异常 IP 访问预警等功能时,可直接集成该文件,无需升级 PHP 环境,快速实现功能落地。
- 轻量级服务器 / 嵌入式设备部署:低配云服务器、虚拟主机、嵌入式 PHP 环境(如路由器内置 PHP 服务、工业控制设备 Web 管理端),往往受限于资源或系统版本,无法支持复杂的多文件项目和高版本 PHP,这份单文件体积小巧、资源占用低,可满足这类场景下的轻量化 IP 查询需求。
- 临时业务需求的快速落地:市场推广活动中的 IP 地域统计、临时数据排查中的 IP 网段归属判断、小型工具类网站的 IP 属地显示等需求,无需搭建复杂的后端架构,上传该单文件即可快速实现功能,开发周期短、部署成本低。
- 离线环境下的 IP 查询:该文件支持本地数据库文件读取(无需依赖远程 API 接口),在无网络连接的内网环境、涉密系统、离线服务器中,可通过预置本地 IP 数据库文件,实现高效的离线 IP 地理位置查询,避免了网络依赖带来的稳定性问题和数据安全风险。
- 传统 IDC 托管项目的功能扩展:传统 IDC 托管的网站或系统,往往因服务商运维策略限制,无法随意升级 PHP 版本或安装第三方扩展,这份单文件的无依赖、低版本兼容特性,可完美适配这类环境的功能扩展需求。
三、 初学者入门指南
这份单文件虽然功能复杂,但对于 PHP 初学者(尤其是需要接触老旧项目的初学者)来说,入门门槛较低,核心操作步骤如下:
-
环境准备 :确保服务器或本地环境为 PHP5.3 版本(可通过
php -v命令验证),开启 openssl 扩展(在 php.ini 中启用extension=openssl.so(Linux)或extension=php_openssl.dll(Windows))。 -
文件部署:将 CyberWinAIOT_IpJudgeV2026.php 文件直接上传至 PHP 项目的任意目录,无需额外配置其他文件或目录结构。
-
核心调用步骤 :
- 引入文件:直接通过
require_once 'CyberWinAIOT_IpJudgeV2026.php';引入(因是单文件,无需自动加载)。 - 实例化类:传入 IP 数据库文件路径、查询模式(MEMORY/BTREE)、解密密钥,示例代码:
php
运行
try { // 初始化IP查询实例 $ipJudge = new CyberWinAIOT_IpJudgeV2026( 'ip_db.dat', // 本地IP数据库文件路径 CyberWinAIOT_IpJudgeV2026::QUERY_TYPE_MEMORY, // 内存查询模式(速度更快) 'your_decrypt_key_123' // 解密密钥(与IP数据库文件配套) ); // 执行IP查询 $ip = '192.168.1.1'; // 待查询IP(支持IPv4/IPv6) $region = $ipJudge->search($ip); // 输出结果 echo "IP: {$ip} 属地: " . ($region ?: '未查询到'); // 释放资源 $ipJudge->close(); } catch (Exception $e) { echo "查询异常: " . $e->getMessage(); } - 引入文件:直接通过
-
入门学习重点 :
- 先掌握两种查询模式的区别(内存模式占用内存较高但速度更快,B 树模式内存占用低,适合低配环境)。
- 熟悉核心方法(__construct 初始化、search 查询、close 释放资源),无需深入理解底层字节操作、加密解密等复杂逻辑。
- 通过异常捕获机制,排查文件路径错误、密钥错误、IP 格式错误等常见问题。
四、 单文件架构的安全特性
这份单文件在设计上充分考虑了生产环境的安全需求,其单文件架构本身也具备独特的安全优势,主要体现在:
- 部署安全:减少攻击面:多文件项目往往存在大量配置文件、依赖文件,容易因某一个文件的权限漏洞、路径泄露导致安全风险。这份单文件仅需维护一个文件的权限(建议设置为 644,禁止执行权限),大幅减少了攻击面,降低了文件泄露、恶意篡改的风险。
- 数据安全:内置加密解密机制 :
- 文件集成了
太玄首破封(头部解密)、破封印(AES-128-ECB 解密)、Decryptor(地理数据解密)等多层加密解密逻辑,IP 数据库文件和地理映射数据均经过加密处理,即使数据库文件被窃取,没有配套密钥也无法解析数据,保障了 IP 数据的安全性。 - 内置客户端 ID 校验、数据库过期时间校验,可有效防止非法使用、篡改数据库文件,避免恶意接入带来的业务风险。
- 文件集成了
- 代码安全:避免路径遍历与注入风险 :
- 文件内部对 IP 地址进行严格格式校验(通过
filter_var验证 IPv4/IPv6 格式),防止 IP 格式注入攻击。 - 文件读写操作使用固定偏移量和严格的长度限制(如
fread指定读取字节数、substr截取固定长度数据),避免路径遍历攻击和缓冲区溢出风险。 - 所有内部方法均为私有 / 受保护权限,仅暴露
__construct、search、close三个公共方法,遵循 "最小权限原则",防止非法调用内部核心逻辑。
- 文件内部对 IP 地址进行严格格式校验(通过
- 运维安全:易于审计与备份:单文件架构便于安全审计(仅需审查一个文件的代码逻辑),也便于备份与恢复(只需备份该文件和配套 IP 数据库文件),避免了多文件项目备份不完整、审计遗漏的问题。
五、 运行速度与性能优化
这份单文件针对 PHP5.3 环境进行了针对性优化,运行效率可满足生产环境的常规需求,核心性能特点和优化策略如下:
- 双查询模式适配不同场景,兼顾速度与内存 :
- 内存搜索模式(MEMORY) :初始化时将整个 IP 数据库加载到内存中(
$dbBinStr),后续查询通过二分查找算法快速定位 IP 网段,无需频繁进行磁盘 I/O 操作,查询响应速度极快(单次查询耗时微秒级),适合高频次 IP 查询场景(如用户登录校验、实时数据统计)。 - B 树搜索模式(BTREE):无需加载整个数据库到内存,仅加载头部索引信息,通过头部索引快速定位磁盘中的目标数据块,再进行二分查找,内存占用极低,适合低配服务器、低频次查询场景,虽比内存模式稍慢,但仍远快于普通的顺序查找。
- 内存搜索模式(MEMORY) :初始化时将整个 IP 数据库加载到内存中(
- 底层优化:提升 PHP5.3 环境下的执行效率 :
- 字节操作优化 :使用
unpack、pack、ord等 PHP 内置函数进行字节级操作,避免自定义函数的性能损耗,且针对 PHP5.3 的unpack函数兼容性进行了优化(移除第三个参数,改用substr截取数据后再解析),避免函数调用报错导致的性能下降。 - 二分查找算法:内存搜索和 B 树搜索均采用二分查找算法(时间复杂度 O (logN)),相较于顺序查找(O (N)),在海量 IP 数据中查询效率呈指数级提升。
- 资源复用与及时释放 :文件内部通过
$raf复用文件句柄,避免频繁打开 / 关闭文件;查询完成后通过close方法及时释放内存(清空$dbBinStr、$HeaderSip等大数组)、关闭文件句柄,减少 PHP5.3 环境下的内存泄漏风险,保障长期运行的稳定性。
- 字节操作优化 :使用
- PHP5.3 环境下的性能表现 :
- 在 PHP5.3 环境中,内存模式下每秒可支持数千次高频次 IP 查询,完全满足中小型网站的业务需求;B 树模式下每秒可支持数百次查询,适合低流量业务或内网系统。
- 针对 PHP5.3 的性能瓶颈(如数组操作效率较低),文件内部采用了紧凑数组结构、减少数组拷贝(如
array_values优化unpack结果)等策略,最大限度提升执行效率。
阿雪技术观
在科技发展浪潮中,我们不妨积极投身技术共享。不满足于做受益者,更要主动担当贡献者。无论是分享代码、撰写技术博客,还是参与开源项目维护改进,每一个微小举动都可能蕴含推动技术进步的巨大能量。东方仙盟是汇聚力量的天地,我们携手在此探索硅基生命,为科技进步添砖加瓦。
Hey folks, in this wild tech - driven world, why not dive headfirst into the whole tech - sharing scene? Don't just be the one reaping all the benefits; step up and be a contributor too. Whether you're tossing out your code snippets, hammering out some tech blogs, or getting your hands dirty with maintaining and sprucing up open - source projects, every little thing you do might just end up being a massive force that pushes tech forward. And guess what? The Eastern FairyAlliance is this awesome place where we all come together. We're gonna team up and explore the whole silicon - based life thing, and in the process, we'll be fueling the growth of technology