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<?php |
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namespace BultonFr\NMEA\Utils; |
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/** |
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* Tools to convert NMEA coordinates |
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* |
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* @package BultonFr\NMEA |
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* @author Vermeulen Maxime <[email protected]> |
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*/ |
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class Coordinates |
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{ |
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/** |
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* Convert coordinate to degree format |
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* |
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* @param string $data Data readed by parser |
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* @param string $direction (default null) Direction of the coordinate |
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* @param string $isLongitude (default false) If is for longitude |
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* @param boolean $toString (default false) Return format |
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* |
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* @return \stdClass|string Change with $toString parameter value |
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*/ |
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public static function convertGPSDataToDegree( |
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$data, |
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$direction = null, |
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$isLongitude = false, |
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$toString = false |
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) { |
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$dotPosition = strpos($data, '.'); |
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$degreeEndPos = ($isLongitude === false) ? 2 : 3; |
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$obj = (object) [ |
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'degree' => (int) substr($data, 0, $degreeEndPos), |
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'minute' => (int) substr($data, $degreeEndPos, $dotPosition), |
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'second' => (int) substr($data, $dotPosition+1) |
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]; |
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if ($toString === false) { |
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return $obj; |
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} |
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return $obj->degree.'° '.$obj->minute.'\' '.$obj->second.'" '.$direction; |
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} |
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/** |
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* Convert coordinate to decimal format |
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* |
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* @param string $data Data readed by parser |
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* @param string $isLongitude (default false) If is for longitude |
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* |
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* @return float |
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*/ |
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public static function convertGPSDataToDec($data, $isLongitude = false) |
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{ |
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$obj = static::convertGPSDataToDegree($data, null, $isLongitude); |
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/** |
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* DD = d + (min/60) + (sec/3600) |
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* @link http://www.latlong.net/degrees-minutes-seconds-to-decimal-degrees |
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*/ |
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return ($obj->degree) + ($obj->minute / 60) + ($obj->second / 3600); |
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} |
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} |
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bulton-fr /
nmea-parser
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