mysql空间查询并不太适合地图坐标，如果使用：http://www.cnblogs.com/tyjsjl/p/8760002.html的方式进行地图点坐标的查询就不好用了，于是直接使用php来进行地图范围的查询更方便点。代码如下：
1 /** 2 ?* 验证坐标点是否在某区域内 3 ?* @author xiaoliang <1058436713@qq.com> 4 ?* Class validationMap 5 ?*/ 6 class validationMap{ 7 ????private $coordArray; 8 ????private $vertx = []; 9 ????private $verty = [];10 ????/**11 ?????* 设置坐标区域12 ?????* @param mixed $coordArray13 ?????*/14 ????public function setCoordArray(array $coordArray)15 ????{16 ????????$this->coordArray = $coordArray;17 ????}18 ????/**19 ?????* 验证区域范围20 ?????* @param array $coordArray21 ?????* @return bool22 ?????*/23 ????public function isCityCenter(array $coordArray){24 ????????if(!$this->vaildatePoint($coordArray)){25 ????????????return false;26 ????????}27 ????????return $this->pnpoly(count($this->coordArray), $coordArray[‘lng‘], $coordArray[‘lat‘]);28 ????}29 ????/**30 ?????* 比较区域坐标31 ?????* @param $nvert32 ?????* @param $testx33 ?????* @param $testy34 ?????* @return bool35 ?????*/36 ????private function pnpoly($nvert,$testx, $testy)37 ????{38 ????????$c = false;39 ????????for ($i = 0, $j = $nvert-1; $i < $nvert; $j = $i++) {40 ????????????if ( ( ($this->verty[$i]>$testy) != ($this->verty[$j]>$testy) ) && ($testx < ($this->vertx[$j]-$this->vertx[$i]) * ($testy-$this->verty[$i]) / ($this->verty[$j]-$this->verty[$i]) + $this->vertx[$i]) )41 ????????????????$c = !$c;42 ????????}43 ????????return $c;44 ????}45 ????/**46 ?????* 验证坐标47 ?????* @param array $pointArray48 ?????* @return bool49 ?????*/50 ????private function vaildatePoint(array $pointArray){51 ????????$maxY = $maxX = 0;52 ????????$minY = $minX = 9999;53 ????????foreach ($this->coordArray as $item){54 ????????????if($item[‘lng‘]>$maxX) $maxX = $item[‘lng‘];55 ????????????if($item[‘lng‘] < $minX) $minX = $item[‘lng‘];56 ????????????if($item[‘lat‘]>$maxY) $maxY = $item[‘lat‘];57 ????????????if($item[‘lat‘] < $minY) $minY = $item[‘lat‘];58 ????????????$this->vertx[] = $item[‘lng‘];59 ????????????$this->verty[] = $item[‘lat‘];60 ????????}61 ????????if ($pointArray[‘lng‘] < $minX || $pointArray[‘lng‘] > $maxX || $pointArray[‘lat‘] < $minY || $pointArray[‘lat‘] > $maxY) {62 ????????????return false;63 ????????}64 ????????return true;65 ????}66 }
/**************************** test *************************************
$map = [ ?//上海
???["lng" => 121.488286, "lat" => 31.420147],
???["lng" => 121.702154, "lat" => 31.294828],
???["lng" => 121.780918, "lat" => 31.141157],
???["lng" => 121.782068, "lat" => 30.941157],
???["lng" => 121.492885, "lat" => 30.909931],
???["lng" => 121.22325, "lat" => 30.890099],
???["lng" => 121.161482, "lat" => 31.015526],
???["lng" => 121.076395, "lat" => 31.226239],
???["lng" => 121.189873, "lat" => 31.339688],
???["lng" => 121.459509, "lat" => 31.41368],
];
$array = ["lat"=>31.218681,"lng"=>121.08604];//进行验证的区域
validationMap::setCoordArray($map);
var_dump(validationMap::isCityCenter($array));
因为每个区域的地图点坐标需要从数据库提取进行查询，所以静态类就不太方便了，本文代码不使用静态类。关于静态类的优缺点在此不作说明。
原文代码：https://www.cnblogs.com/liang94/p/5936583.html
php验证地图坐标在某片坐标区域内
原文地址：https://www.cnblogs.com/tyjsjl/p/8855253.html