Provide an IP geographical location query class again

IP geographical location query class

/**
File name: IpLocation.class.php
* IP geographical location query class (I uploaded the main file and a test file. There is also QQWry.Dat, which you can download from the Innocence IP library because there is It’s over 6M so I won’t upload it here)
*
* @author Ma Bingyao
* @version 1.5
* @copyright 2005 CoolCode.CN
*/
class IpLocation {
 /**
 * QQWry.Dat file pointer
 * @var resource
*/
 var $fp;

 /**
 * Offset address of the first IP record
 * @var int
*/
 var $firstip ;

 /**
 * Offset address of the last IP record
 * @var int
*/
 var $lastip;

 /**
 * Total number of IP records (excluding version information records)
 * @var int
*/
 var $totalip;

/**
* Constructor, open the QQWry.Dat file and initialize the information in the class
* @param string $filename
* @return IpLocation
*/
function __construct($filename = "QQWry .Dat") {
 $this->fp = 0;
 if (($this->fp = @fopen($filename, 'rb')) !== false) {
 $this->firstip = $this->getlong();
 $this->lastip = $this->getlong();
 $this->totalip = ($this->lastip - $this->firstip) / 7;
 //Register the destructor so that it is executed at the end of program execution
 register_shutdown_function(array(&$this, '__construct'));
 }
}

/**
* Return the read long integer
* @access private
* @return int
*/
function getlong() {
 //Convert the read 4 bytes of little-endian encoding into a long integer
 $result = unpack('Vlong', fread($this->fp, 4));
 return $result['long'];
}

/**
* Returns the read 3-byte long integer
*
* @access private
* @return int
*/
function getlong3() {
 //Convert the read 3 bytes of little-endian encoding into a long integer
 $result = unpack('Vlong', fread($this->fp, 3).chr(0));
 return $result['long'];
}

/**
* Returns the compressed IP address that can be compared
*
* @access private
* @param string $ip
* @return string
*/
 function packip($ip) {
 // Convert the IP address into a long integer. If the IP address is wrong in PHP5, False will be returned.
 // At this time, intval will convert the Flese into an integer -1, and then compress it into big-endian encoded string
 return pack('N', intval(ip2long($ip)));
}

/**
* Return the read string
*
* @access private
* @param string $data
* @return string
*/
function getstring($data = "") {
 $ char = fread($this->fp, 1);
 while (ord($char) > 0) { // The string is saved in C format, in
 if ($ip  $u = $i - 1; // Modify the upper boundary of the search to the intermediate record minus one
 } else {
 fseek($this->fp, $this->getlong3());
 $endip = strrev(fread($this->fp, 4)); // Get the end IP address of the intermediate record
 if ($ip > $endip) { // When the user's IP is greater than the end IP address of the intermediate record
 $l = $i + 1; // Modify the lower boundary of the search to the intermediate record plus one
 } else { // When the user's IP is within the IP range of the intermediate record
 $findip = $this->firstip + $i * 7;
 break; // It means the result is found and the loop is exited
 }
 }
}

//Get The IP geographical location information found
fseek($this->fp, $findip);
$location['beginip'] = long2ip($this->getlong()); // The beginning of the range where the user IP is located Address
$offset = $this->getlong3();
fseek($this->fp, $offset);
$location['endip'] = long2ip($this->getlong()); / / End address of the user IP range
$byte = fread($this->fp, 1); // Flag byte
switch (ord($byte)) {
 case 1: // Flag byte is 1 , indicating that both country and regional information are redirected at the same time
 $countryOffset = $this->getlong3(); // Redirect address
 fseek($this->fp, $countryOffset);
 $byte = fread($ this->fp, 1); // Flag byte
 switch (ord($byte)) {
 case 2: // Flag byte is 2, indicating that the country information has been redirected again
 fseek($this-> ;fp, $this->getlong3());
 $location['country'] = $this->getstring();
 fseek($this->fp, $countryOffset + 4);
 $location ['area'] = $this->getarea();
 break;
 default: // Otherwise, it means that the country information is not redirected
 $location['country'] = $this->getstring($byte );
 $location['area'] = $this->getarea();
 break;
 }
 break;
 case 2: // The flag byte is 2, indicating that the country information is redirected
 fseek($ this->fp, $this->getlong3());
 $location['country'] = $this->getstring();
 fseek($this->fp, $offset + 8);
 $location['area'] = $this->getarea();
 break;
 default: // Otherwise, it means that the country information is not redirected
 $location['country'] = $this->getstring ($byte);
 $location['area'] = $this->getarea();
 break;
}
if ($location['country'] == " CZ88.NET") { // CZ88 .NET indicates that there is no valid information
 $location['country'] = "Unknown";
}
if ($location['area'] == " CZ88.NET") {
 $location['area'] = " ";
}
return $location;
}

/**
* Destructor, used to automatically close the open file after the page execution ends.
*
*/
function __desctruct() {
 if ($this->fp) {
 fclose($this->fp);
 }
 $this->fp = 0;
}
}
?>

 require_once('IpLocation.class.php');
 $ip='127.0.0.1';
 $idADDR=new IpLocation();
 print_r($idADDR->getlocation($ ip));
?>

/**
* IP geographical location query class
*
* @author Ma Bingyao
* @version 1.5
* @copyright 2005 CoolCode.CN
*/
class IpLocation {
 /**
 * QQWry.Dat file pointer
 * @var resource
*/
 var $fp;

 /**
 * Offset address of the first IP record
 * @var int
*/
 var $firstip ;

 /**
 * Offset address of the last IP record
 * @var int
*/
 var $lastip;

 /**
 * Total number of IP records (excluding version information records)
 * @var int
*/
 var $totalip;

/**
* Constructor, open the QQWry.Dat file and initialize the information in the class
* @param string $filename
* @return IpLocation
*/
function __construct($filename = "QQWry .Dat") {
 $this->fp = 0;
 if (($this->fp = @fopen($filename, 'rb')) !== false) {
 $this->firstip = $this->getlong();
 $this->lastip = $this->getlong();
 $this->totalip = ($this->lastip - $this->firstip) / 7;
 //Register the destructor so that it is executed at the end of program execution
 register_shutdown_function(array(&$this, '__construct'));
 }
}

/**
* Return the read long integer
* @access private
* @return int
*/
function getlong() {
 //Convert the read 4 bytes of little-endian encoding into a long integer
 $result = unpack('Vlong', fread($this->fp, 4));
 return $result['long'];
}

/**
* Returns the read 3-byte long integer
*
* @access private
* @return int
*/
function getlong3() {
 //Convert the read 3 bytes of little-endian encoding into a long integer
 $result = unpack('Vlong', fread($this->fp, 3).chr(0));
 return $result['long'];
}

/**
* Returns the compressed IP address that can be compared
*
* @access private
* @param string $ip
* @return string
*/
 function packip($ip) {
 // Convert the IP address into a long integer. If the IP address is wrong in PHP5, False will be returned.
 // At this time, intval will convert the Flese into an integer -1, and then compress it into big-endian encoded string
 return pack('N', intval(ip2long($ip)));
}

/**
* Return the read string
*
* @access private
* @param string $data
* @return string
*/
function getstring($data = "") {
 $ char = fread($this->fp, 1);
 while (ord($char) > 0) { // The string is saved in C format, in
 if ($ip  $u = $i - 1; // Modify the upper boundary of the search to the intermediate record minus one
 } else {
 fseek($this->fp, $this->getlong3());
 $endip = strrev(fread($this->fp, 4)); // Get the end IP address of the intermediate record
 if ($ip > $endip) { // When the user's IP is greater than the end IP address of the intermediate record
 $l = $i + 1; // Modify the lower boundary of the search to the intermediate record plus one
 } else { // When the user's IP is within the IP range of the intermediate record
 $findip = $this->firstip + $i * 7;
 break; // It means the result is found and the loop is exited
 }
 }
}

//Get The IP geographical location information found
fseek($this->fp, $findip);
$location['beginip'] = long2ip($this->getlong()); // The beginning of the range where the user IP is located Address
$offset = $this->getlong3();
fseek($this->fp, $offset);
$location['endip'] = long2ip($this->getlong()); / / End address of the user IP range
$byte = fread($this->fp, 1); // Flag byte
switch (ord($byte)) {
 case 1: // Flag byte is 1 , indicating that both country and regional information are redirected at the same time
 $countryOffset = $this->getlong3(); // Redirect address
 fseek($this->fp, $countryOffset);
 $byte = fread($ this->fp, 1); // Flag byte
 switch (ord($byte)) {
 case 2: // Flag byte is 2, indicating that the country information has been redirected again
 fseek($this-> ;fp, $this->getlong3());
 $location['country'] = $this->getstring();
 fseek($this->fp, $countryOffset + 4);
 $location ['area'] = $this->getarea();
 break;
 default: // Otherwise, it means that the country information is not redirected
 $location['country'] = $this->getstring($byte );
 $location['area'] = $this->getarea();
 break;
 }
 break;
 case 2: // The flag byte is 2, indicating that the country information is redirected
 fseek($ this->fp, $this->getlong3());
 $location['country'] = $this->getstring();
 fseek($this->fp, $offset + 8);
 $location['area'] = $this->getarea();
 break;
 default: // Otherwise, it means that the country information is not redirected
 $location['country'] = $this->getstring ($byte);
 $location['area'] = $this->getarea();
 break;
}
if ($location['country'] == " CZ88.NET") { // CZ88 .NET indicates that there is no valid information
 $location['country'] = "Unknown";
}
if ($location['area'] == " CZ88.NET") {
 $location['area'] = " ";
}
return $location;
}

/**
* Destructor, used to automatically close the open file after the page execution ends.
*
*/
function __desctruct() {
 if ($this->fp) {
 fclose($this->fp);
 }
 $this->fp = 0;
}
}
?>