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bolstad/geobox
==============

Check if longitude and latitude exist in polygon

1.0(11y ago)047MITPHP

Since Jul 13Pushed 11y ago1 watchersCompare

[ Source](https://github.com/bolstad/geobox)[ Packagist](https://packagist.org/packages/bolstad/geobox)[ RSS](/packages/bolstad-geobox/feed)WikiDiscussions master Synced today

READMEChangelog (1)DependenciesVersions (5)Used By (0)

geobox
======

[](#geobox)

The simple way:

```

$geobox = new GeoBox\Simple;

$polySides  = 8; //how many corners the polygon has
$polyX    =  array( 12.548740, 12.541320, 12.537410, 12.535310, 12.534499, 12.535787, 12.538100, 12.543890, 12.548740 );//horizontal coordinates of corners
$polyY    =  array( 55.694469, 55.687840, 55.690552, 55.694641, 55.695293, 55.696625, 55.696911, 55.697659, 55.694469 );//vertical coordinates of corners
$x = 12.548740;
$y = 55.694469;

if ($geobox->isPointInPolygon($polyX,$polyY,$x,$y)){
  echo "Is in polygon!\n";
}
else echo "Is not in polygon\n";

```

Or with some helper objects:

```
// Kungsholmen is an island in Stockholm, Sweden. 'data' is a IITC Drawtool export of a polygon covering the island
$parser = new GeoBox\Parser\DrawTool(
	array (
		'data' => '[{"type":"polygon","latLngs":[{"lat":59.33712917242916,"lng":17.993974685668945},{"lat":59.341943796898505,"lng":18.006291389465332},{"lat":59.33520313154757,"lng":18.046588897705078},{"lat":59.32990595603571,"lng":18.052854537963867},{"lat":59.32767301480689,"lng":18.058090209960938},{"lat":59.325133413122515,"lng":18.05577278137207},{"lat":59.32539613933905,"lng":18.04203987121582},{"lat":59.327410306192064,"lng":18.028478622436523},{"lat":59.323075320824685,"lng":18.023414611816406},{"lat":59.329949737730324,"lng":17.993974685668945}],"color":"#a24ac3"}]',
		'label' => 'SE:STOCKHOLM:STOCKHOLM:KUNGSHOLMEN'
	)
);

// 'Resande med djur' is a public artwork on T-Kristineberg (on Kungsholmen)
$onKungsholmen = new GeoBox\Location\Point( array(
		'label' => 'Public Artwork: Resande med djur',
		'x' => 18.004639,
		'y' => 59.332444 )
);

// 'Tranebergsstugan' is a cabin in Alvik, Stockholm - close, but not on the island Kungsholmen
$offKungsholmen = new GeoBox\Location\Point( array(
		'label' => 'Building: Tranebergsstugan',
		'x' => 17.990457,
		'y' => 59.333161 )
);

$geobox = new GeoBox\Simple;

foreach ( array( $onKungsholmen, $offKungsholmen ) as $check ) {
	if ( $geobox->isPointObjInPolygon( $check, $parser ) )
		echo $check->getLabel() . " was found in polygon " . $parser->getLabel() . "!\n";
	else
		echo $check->getLabel() . " was *not* found in polygon " . $parser->getLabel() . "\n";

}

```

=== Credits ===

The basic polynom matching is based on the algorithm by David Strachan as presented on .

###  Health Score

28

—

LowBetter than 54% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity8

Limited adoption so far

Community7

Small or concentrated contributor base

Maturity66

Established project with proven stability

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Unknown

Total

1

Last Release

4318d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/0ec058cc342db8fb862c97b2276cddd2127047ad6972140cbad9bff146a8825d?d=identicon)[bolstad](/maintainers/bolstad)

---

Top Contributors

[![bolstad](https://avatars.githubusercontent.com/u/62787?v=4)](https://github.com/bolstad "bolstad (16 commits)")

---

Tags

geophp

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