PHP之路——geohash尋找附近的人

標籤：php   ber   hash   logs   location   etl   tla   sub   ret   

<?phpclass location{public function getLat($number, $small, $big,  $temp = 20){$temp--;$average = ($big + $small) / 2;if ($temp == 0) {if ($average <= $number) {return ‘1‘;} else {return ‘0‘;}}if ($average <= $number) {return ‘1‘ . $this->getLat($number, $average, $big, $temp);} else {return ‘0‘ . $this->getLat($number, $small, $average, $temp);}}public function joinStr($lat, $lon){$len = strlen($lat);$str = ‘‘;for ($i=0; $i < $len; $i++) { $str .= $lon[$i] . $lat[$i];}return $str;}}$location = new location();$lat = $location->getLat(39.92324, -90, 90);$lon = $location->getLat(116.3906, -180, 180);$str =  $location->joinStr($lat, $lon);for ($i=0; $i <strlen($str) / 5 ; $i++) { $code[$i] = bindec(substr($str, $i * 5, 5));}foreach ($code as $key => $value) {echo $value . "\n";}

　　

PHP之路——geohash尋找附近的人