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