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[增加]Composer增加zoujingli/ip2region组件

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邹景立 2017-03-24 18:03:36 +08:00
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vendor/zoujingli/ip2region/Ip2Region.php vendored Normal file
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<?php
/**
* ip2region php seacher client class
*
* @author chenxin<chenxin619315@gmail.com>
* @date 2015-10-29
*/
defined('INDEX_BLOCK_LENGTH') or define('INDEX_BLOCK_LENGTH', 12);
defined('TOTAL_HEADER_LENGTH') or define('TOTAL_HEADER_LENGTH', 4096);
class Ip2Region {
/**
* db file handler
*/
private $dbFileHandler = NULL;
/**
* header block info
*/
private $HeaderSip = NULL;
private $HeaderPtr = NULL;
private $headerLen = 0;
/**
* super block index info
*/
private $firstIndexPtr = 0;
private $lastIndexPtr = 0;
private $totalBlocks = 0;
/**
* for memory mode only
* the original db binary string
*/
private $dbBinStr = NULL;
private $dbFile = NULL;
/**
* construct method
*
* @param ip2regionFile
*/
public function __construct($ip2regionFile = null) {
$this->dbFile = is_null($ip2regionFile) ? __DIR__ . '/ip2region.db' : $ip2regionFile;
}
/**
* all the db binary string will be loaded into memory
* then search the memory only and this will a lot faster than disk base search
* @Note:
* invoke it once before put it to public invoke could make it thread safe
*
* @param $ip
*/
public function memorySearch($ip) {
//check and load the binary string for the first time
if ($this->dbBinStr == NULL) {
$this->dbBinStr = file_get_contents($this->dbFile);
if ($this->dbBinStr == false) {
throw new Exception("Fail to open the db file {$this->dbFile}");
}
$this->firstIndexPtr = self::getLong($this->dbBinStr, 0);
$this->lastIndexPtr = self::getLong($this->dbBinStr, 4);
$this->totalBlocks = ($this->lastIndexPtr - $this->firstIndexPtr) / INDEX_BLOCK_LENGTH + 1;
}
if (is_string($ip)) $ip = self::safeIp2long($ip);
//binary search to define the data
$l = 0;
$h = $this->totalBlocks;
$dataPtr = 0;
while ($l <= $h) {
$m = (($l + $h) >> 1);
$p = $this->firstIndexPtr + $m * INDEX_BLOCK_LENGTH;
$sip = self::getLong($this->dbBinStr, $p);
if ($ip < $sip) {
$h = $m - 1;
} else {
$eip = self::getLong($this->dbBinStr, $p + 4);
if ($ip > $eip) {
$l = $m + 1;
} else {
$dataPtr = self::getLong($this->dbBinStr, $p + 8);
break;
}
}
}
//not matched just stop it here
if ($dataPtr == 0) return NULL;
//get the data
$dataLen = (($dataPtr >> 24) & 0xFF);
$dataPtr = ($dataPtr & 0x00FFFFFF);
return array(
'city_id' => self::getLong($this->dbBinStr, $dataPtr),
'region' => substr($this->dbBinStr, $dataPtr + 4, $dataLen - 4)
);
}
/**
* get the data block throught the specifield ip address or long ip numeric with binary search algorithm
*
* @param ip
* @return mixed Array or NULL for any error
*/
public function binarySearch($ip) {
//check and conver the ip address
if (is_string($ip)) $ip = self::safeIp2long($ip);
if ($this->totalBlocks == 0) {
//check and open the original db file
if ($this->dbFileHandler == NULL) {
$this->dbFileHandler = fopen($this->dbFile, 'r');
if ($this->dbFileHandler == false) {
throw new Exception("Fail to open the db file {$this->dbFile}");
}
}
fseek($this->dbFileHandler, 0);
$superBlock = fread($this->dbFileHandler, 8);
$this->firstIndexPtr = self::getLong($superBlock, 0);
$this->lastIndexPtr = self::getLong($superBlock, 4);
$this->totalBlocks = ($this->lastIndexPtr - $this->firstIndexPtr) / INDEX_BLOCK_LENGTH + 1;
}
//binary search to define the data
$l = 0;
$h = $this->totalBlocks;
$dataPtr = 0;
while ($l <= $h) {
$m = (($l + $h) >> 1);
$p = $m * INDEX_BLOCK_LENGTH;
fseek($this->dbFileHandler, $this->firstIndexPtr + $p);
$buffer = fread($this->dbFileHandler, INDEX_BLOCK_LENGTH);
$sip = self::getLong($buffer, 0);
if ($ip < $sip) {
$h = $m - 1;
} else {
$eip = self::getLong($buffer, 4);
if ($ip > $eip) {
$l = $m + 1;
} else {
$dataPtr = self::getLong($buffer, 8);
break;
}
}
}
//not matched just stop it here
if ($dataPtr == 0) return NULL;
//get the data
$dataLen = (($dataPtr >> 24) & 0xFF);
$dataPtr = ($dataPtr & 0x00FFFFFF);
fseek($this->dbFileHandler, $dataPtr);
$data = fread($this->dbFileHandler, $dataLen);
return array(
'city_id' => self::getLong($data, 0),
'region' => substr($data, 4)
);
}
/**
* get the data block associated with the specifield ip with b-tree search algorithm
* @Note: not thread safe
*
* @param ip
* @return Mixed Array for NULL for any error
*/
public function btreeSearch($ip) {
if (is_string($ip)) $ip = self::safeIp2long($ip);
//check and load the header
if ($this->HeaderSip == NULL) {
//check and open the original db file
if ($this->dbFileHandler == NULL) {
$this->dbFileHandler = fopen($this->dbFile, 'r');
if ($this->dbFileHandler == false) {
throw new Exception("Fail to open the db file {$this->dbFile}");
}
}
fseek($this->dbFileHandler, 8);
$buffer = fread($this->dbFileHandler, TOTAL_HEADER_LENGTH);
//fill the header
$idx = 0;
$this->HeaderSip = array();
$this->HeaderPtr = array();
for ($i = 0; $i < TOTAL_HEADER_LENGTH; $i += 8) {
$startIp = self::getLong($buffer, $i);
$dataPtr = self::getLong($buffer, $i + 4);
if ($dataPtr == 0) break;
$this->HeaderSip[] = $startIp;
$this->HeaderPtr[] = $dataPtr;
$idx++;
}
$this->headerLen = $idx;
}
//1. define the index block with the binary search
$l = 0;
$h = $this->headerLen;
$sptr = 0;
$eptr = 0;
while ($l <= $h) {
$m = (($l + $h) >> 1);
//perfetc matched, just return it
if ($ip == $this->HeaderSip[$m]) {
if ($m > 0) {
$sptr = $this->HeaderPtr[$m - 1];
$eptr = $this->HeaderPtr[$m];
} else {
$sptr = $this->HeaderPtr[$m];
$eptr = $this->HeaderPtr[$m + 1];
}
break;
}
//less then the middle value
if ($ip < $this->HeaderSip[$m]) {
if ($m == 0) {
$sptr = $this->HeaderPtr[$m];
$eptr = $this->HeaderPtr[$m + 1];
break;
} else if ($ip > $this->HeaderSip[$m - 1]) {
$sptr = $this->HeaderPtr[$m - 1];
$eptr = $this->HeaderPtr[$m];
break;
}
$h = $m - 1;
} else {
if ($m == $this->headerLen - 1) {
$sptr = $this->HeaderPtr[$m - 1];
$eptr = $this->HeaderPtr[$m];
break;
} else if ($ip <= $this->HeaderSip[$m + 1]) {
$sptr = $this->HeaderPtr[$m];
$eptr = $this->HeaderPtr[$m + 1];
break;
}
$l = $m + 1;
}
}
//match nothing just stop it
if ($sptr == 0) return NULL;
//2. search the index blocks to define the data
$blockLen = $eptr - $sptr;
fseek($this->dbFileHandler, $sptr);
$index = fread($this->dbFileHandler, $blockLen + INDEX_BLOCK_LENGTH);
$dataptr = 0;
$l = 0;
$h = $blockLen / INDEX_BLOCK_LENGTH;
while ($l <= $h) {
$m = (($l + $h) >> 1);
$p = (int)($m * INDEX_BLOCK_LENGTH);
$sip = self::getLong($index, $p);
if ($ip < $sip) {
$h = $m - 1;
} else {
$eip = self::getLong($index, $p + 4);
if ($ip > $eip) {
$l = $m + 1;
} else {
$dataptr = self::getLong($index, $p + 8);
break;
}
}
}
//not matched
if ($dataptr == 0) return NULL;
//3. get the data
$dataLen = (($dataptr >> 24) & 0xFF);
$dataPtr = ($dataptr & 0x00FFFFFF);
fseek($this->dbFileHandler, $dataPtr);
$data = fread($this->dbFileHandler, $dataLen);
return array(
'city_id' => self::getLong($data, 0),
'region' => substr($data, 4)
);
}
/**
* safe self::safeIp2long function
*
* @param ip
* */
public static function safeIp2long($ip) {
$ip = ip2long($ip);
// convert signed int to unsigned int if on 32 bit operating system
if ($ip < 0 && PHP_INT_SIZE == 4) {
$ip = sprintf("%u", $ip);
}
return $ip;
}
/**
* read a long from a byte buffer
*
* @param b
* @param offset
*/
public static function getLong($b, $offset) {
$val = (
(ord($b[$offset++])) |
(ord($b[$offset++]) << 8) |
(ord($b[$offset++]) << 16) |
(ord($b[$offset]) << 24)
);
// convert signed int to unsigned int if on 32 bit operating system
if ($val < 0 && PHP_INT_SIZE == 4) {
$val = sprintf("%u", $val);
}
return $val;
}
/**
* destruct method, resource destroy
*/
public function __destruct() {
if ($this->dbFileHandler != NULL) {
fclose($this->dbFileHandler);
}
$this->dbBinStr = NULL;
$this->HeaderSip = NULL;
$this->HeaderPtr = NULL;
}
}
?>

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==========================================================================
The following license applies to the ip2region library
--------------------------------------------------------------------------
Copyright (c) 2015 Lionsoul<chenxin619315@gmail.com>
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[![Latest Stable Version](https://poser.pugx.org/zoujingli/ip2region/v/stable)](https://packagist.org/packages/zoujingli/ip2region)
[![Total Downloads](https://poser.pugx.org/zoujingli/ip2region/downloads)](https://packagist.org/packages/zoujingli/ip2region)
[![Latest Unstable Version](https://poser.pugx.org/zoujingli/ip2region/v/unstable)](https://packagist.org/packages/zoujingli/ip2region)
[![License](https://poser.pugx.org/zoujingli/ip2region/license)](https://packagist.org/packages/zoujingli/ip2region)
本库基于 [ip2region](https://github.com/lionsoul2014/ip2region) ，简单整合方便使用`composer`来管理。
--
[ip2region](https://github.com/lionsoul2014/ip2region) - 最自由的ip地址查询库，ip到地区的映射库，提供Binary,B树和纯内存三种查询算法，妈妈再也不用担心我的ip地址定位。
### 1. 99.9%准确率，定时更新：
数据聚合了一些知名ip到地名查询提供商的数据，这些是他们官方的的准确率，经测试着实比纯真啥的准确多了。<br />
每次聚合一下数据需要1-2天，会不定时更新。
### 2. 标准化的数据格式：
每条ip数据段都固定了格式：_城市Id|国家|区域|省份|城市|ISP_
只有中国的数据精确到了城市，其他国家只能定位到国家，后前的选项全部是0，已经包含了全部你能查到的大大小小的国家。
（请忽略前面的城市Id，个人项目需求）
### 3. 体积小：
数据库文件ip2region.db只有3.5M
### Composer 安装
```
composer require zoujingli/ip2region
```
### ip2region 使用
```php
$ip2region = new Ip2Region();
$ip = '101.105.35.57';
$info = $ip2region->btreeSearch($ip);
var_export($info, true);
// array (
// 'city_id' => 2163,
// 'region' => '中国|华南|广东省|深圳市|鹏博士',
// )
```

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{
"type": "library",
"name": "zoujingli/ip2region",
"homepage": "https://github.com/zoujingli/Ip2Region",
"description": "Ip2Region",
"license": "Apache 2.0",
"keywords": [
"Ip2Region"
],
"require": {
"php": ">=5.3.3"
},
"autoload": {
"classmap": [
"Ip2Region.php"
]
}
}

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vendor/zoujingli/ip2region/ip2region.db vendored Normal file
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