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  1. PO
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    <p>I have done something simular in PHP using the Lumb algorithm.</p> <p>You should be able to get something from the code below (sits in my model, but you can put in anywhere).</p> <pre><code>public function search($start_latitude, $start_longitude, $radius, $radius_type, $offset, $limit) { $results = array(); $locations = array(); $sql = "SELECT `location_id`, `latitude`, `longitude` FROM `table`"; $query = $this-&gt;db-&gt;query($sql); if ($query-&gt;num_rows() &gt; 0) { foreach ($query-&gt;result() as $row) { $geo_data = $this-&gt;_bearing_distance_calc($start_latitude, $start_longitude, $row-&gt;latitude, $row-&gt;longitude, $radius_type); $geo_data['radius_type'] = $radius_type; if($geo_data['distance'] &lt;= $radius) { // radial serach results $locations[] = $row-&gt;location_id; } } // return amount requested $results['total'] = count($locations); $results['locations'] = array_slice($locations, $offset, $limit); return $results; } else { // no results return FALSE; } } /** * Calculate Distance Between two points. * * This method is used to calculate the distance between to geographical points. &lt;br /&gt; * Used by the search method. * * @access private * * @param float $device_latitude * @param float $device_longitude * @param float $beach_latitude * @param float $beach_longitude * @param integer $radius_type * * @return array */ private function _bearing_distance_calc($start_latitude, $start_longitude, $building_latitude, $building_longitude, $radius_type) { // using Rhumb lines(or loxodrome) // convert to rads for php trig functions $start_latitude = deg2rad($start_latitude); $start_longitude = deg2rad($start_longitude); $building_latitude = deg2rad($building_latitude); $building_longitude = deg2rad($building_longitude); // testing variables //$start_latitude = deg2rad(39.4422); //$start_longitude = deg2rad(-122.0307); //$building_latitude = deg2rad(49.4422); //$building_longitude = deg2rad(-112.0307); // calculate delta of lat and long $delta_latitude = $building_latitude-$start_latitude; $delta_longitude = $building_longitude-$start_longitude; // earth radius if ($radius_type == 'miles') // using miles { $earth_radius = 3959; } else // using kilometers { $earth_radius = 6371; } // now lets start mathing !! // cast types $dPhi = log(tan($building_latitude/2+M_PI/4)/tan($start_latitude/2+M_PI/4)); if ($dPhi != 0) { $q = $delta_latitude/$dPhi; } else { $q = cos($start_latitude); } //$q = (!is_nan($delta_latitude/$dPhi)) ? $delta_latitude/$dPhi : cos($start_latitude); // E-W line gives dPhi=0 // if dLon over 180° take shorter rhumb across 180° meridian: if (abs($delta_longitude) &gt; M_PI) { $delta_longitude = $delta_longitude&gt;0 ? -(2*M_PI-$delta_longitude) : (2*M_PI+$delta_longitude); } $geo_data = array(); $geo_data['distance'] = sqrt($delta_latitude*$delta_latitude + $q*$q*$delta_longitude*$delta_longitude) * $earth_radius; $bearing = rad2deg(atan2($delta_longitude, $dPhi)); if($bearing &lt; 0) { $bearing = 360 + $bearing; } $geo_data['bearing'] = $bearing; return $geo_data; } </code></pre>
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    1. POGet nearby locations using google places api in php/codeigniter
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    1. USRooneyl
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    1. COYour code is great. But I guess it will work in a situation when there is a database having data of locations. I need to call the Google places api to fetch nearby locations. Thanks a lot for the response.
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      1. USsalman
 

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