Initial Release
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<?php
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/**
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* +----------------------------------------------------------------------+
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* | PHP version 5 |
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* +----------------------------------------------------------------------+
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* | Copyright (C) 2004 MaxMind LLC |
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* +----------------------------------------------------------------------+
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* | This library is free software; you can redistribute it and/or |
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* | modify it under the terms of the GNU Lesser General Public |
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* | License as published by the Free Software Foundation; either |
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* | version 2.1 of the License, or (at your option) any later version. |
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* | |
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* | This library is distributed in the hope that it will be useful, |
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* | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* | Lesser General Public License for more details. |
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* | |
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* | You should have received a copy of the GNU Lesser General Public |
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* | License along with this library; if not, write to the Free Software |
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* | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* | USA, or view it online at http://www.gnu.org/licenses/lgpl.txt. |
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* +----------------------------------------------------------------------+
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* | Authors: Jim Winstead <jimw@apache.org> (original Maxmind version) |
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* | Hans Lellelid <hans@xmpl.org> |
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* +----------------------------------------------------------------------+
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*
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* @category Net
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* @package GeoIP
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* @author Hans Lellelid <hans@xmpl.org>
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* @license LGPL http://www.gnu.org/licenses/lgpl.txt
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* @link http://pear.php.net/package/GeoIP
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* $Id: Location.php 296763 2010-03-25 00:53:44Z clockwerx $
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*/
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/**
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* This class represents a location record as returned by GeoIP::lookupLocation().
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*
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* This class is primarily a collection of values (the public properties of the class), but
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* there is also a distance() method to calculate the km distance between two points.
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*
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* @category Net
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* @package GeoIP
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* @author Hans Lellelid <hans@xmpl.org>
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* @author Dmitri Snytkine <d.snytkine@gmail.com>
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* @license LGPL http://www.gnu.org/licenses/lgpl.txt
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* @version $Revision: 296763 $
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* @link http://pear.php.net/package/GeoIP
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* @see GeoIP::lookupLocation()
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*/
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class GeoIP_Location implements Serializable {
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protected $aData = array(
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'countryCode' => null,
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'countryCode3' => null,
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'countryName' => null,
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'region' => null,
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'regionName' => null,
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'city' => null,
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'postalCode' => null,
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'latitude' => null,
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'longitude' => null,
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'areaCode' => null,
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'dmaCode' => null
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);
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/**
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* Calculate the distance in km between two points.
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*
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* @param GeoIP_Location $loc The other point to which distance will be calculated.
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*
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* @return float The number of km between two points on the globe.
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*/
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public function distance(GeoIP_Location $loc) {
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// ideally these should be class constants, but class constants
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// can't be operations.
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$RAD_CONVERT = M_PI / 180;
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$EARTH_DIAMETER = 2 * 6378.2;
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$lat1 = $this->latitude;
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$lon1 = $this->longitude;
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$lat2 = $loc->latitude;
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$lon2 = $loc->longitude;
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// convert degrees to radians
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$lat1 *= $RAD_CONVERT;
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$lat2 *= $RAD_CONVERT;
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// find the deltas
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$delta_lat = $lat2 - $lat1;
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$delta_lon = ($lon2 - $lon1) * $RAD_CONVERT;
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// Find the great circle distance
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$temp = pow(sin($delta_lat / 2), 2) + cos($lat1) * cos($lat2) * pow(sin($delta_lon / 2), 2);
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return $EARTH_DIAMETER * atan2(sqrt($temp), sqrt(1 - $temp));
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}
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/**
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* magic method to make it possible
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* to store this object in cache when
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* automatic serialization is on
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* Specifically it makes it possible to store
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* this object in memcache
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*
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* @return array
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*/
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public function serialize() {
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return serialize($this->aData);
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}
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/**
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* unserialize a representation of the object
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*
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* @param array $serialized The serialized representation of the location
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*
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* @return void
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*/
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public function unserialize($serialized) {
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$this->aData = unserialize($serialized);
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}
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/**
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* Setter for elements of $this->aData array
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*
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* @param string $name The variable to set
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* @param string $val The value
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*
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* @return object $this object
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*/
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public function set($name, $val) {
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if (array_key_exists($name, $this->aData)) {
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$this->aData[$name] = $val;
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}
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return $this;
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}
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public function __set($name, $val) {
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return $this->set($name, $val);
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}
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/**
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* Getter for $this->aData array
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*
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* @return array
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*/
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public function getData() {
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return $this->aData;
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}
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/**
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* Magic method to get value from $this->aData array
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*
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* @param string $name The var to get
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*
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* @return mixed string if value exists or null if it is empty of
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* just does not exist
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*/
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public function __get($name) {
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if (array_key_exists($name, $this->aData)) {
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return $this->aData[$name];
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}
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return null;
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}
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/**
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* String representation of the object
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*
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* @return string text and result of print_r of $this->aData array
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*/
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public function __toString() {
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return 'object of type ' . __CLASS__ . '. data: ' . implode(',', $this->aData);
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}
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/**
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* Magic method
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* makes it possible to check if specific record exists
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* and also makes it possible to use empty() on any property
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*
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* @param strign $name The name of the var to check
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*
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* @return bool
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*/
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public function __isset($name) {
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return (null !== $this->__get($name));
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}
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}
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