Comments (3)
You can use the GEOS extension and the contains()
or within()
methods.
See: https://github.com/phayes/geoPHP/blob/master/lib/geometry/Geometry.class.php#L265
from geophp.
It might be useful. I've converted C code from this article.
function pnpoly($polygon, $point) {
for ($result = FALSE, $nvert = count($polygon), $i = 0, $j = $nvert - 1; $i < $nvert; $j = $i++) {
if ($polygon[$i][1] > $point[1] != $polygon[$j][1] > $point[1] && $point[0] < (($polygon[$j][0] - $polygon[$i][0]) * ($point[1] - $polygon[$i][1]) / ($polygon[$j][1] - $polygon[$i][1])) + $polygon[$i][0]) {
$result = !$result;
}
}
return $result;
}
from geophp.
https://stackoverflow.com/a/42304662/782013/ ?
from geophp.
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