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48 lines
1.5 KiB
48 lines
1.5 KiB
<?php
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/*
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* Title: CSV to GeoJSON
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* Notes: Convert a comma separated CSV file of points with x & y fields to GeoJSON format, suitable for use in OpenLayers, Leaflet, etc. Only point features are supported.
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* Author: Bryan R. McBride, GISP
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* Contact: bryanmcbride.com
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* GitHub: https://github.com/bmcbride/PHP-Database-GeoJSON
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*/
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# Read the CSV file
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$csvfile = 'positions.txt';
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$handle = fopen($csvfile, 'r');
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# Build GeoJSON feature collection array
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$geojson = array(
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'type' => 'FeatureCollection',
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'features' => array()
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);
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# Loop through rows to build feature arrays
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$header = NULL;
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while (($row = fgetcsv($handle, 1000, ',')) !== FALSE) {
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if (!$header) {
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$header = $row;
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} else {
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$data = array_combine($header, $row);
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$properties = $data;
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# Remove x and y fields from properties (optional)
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unset($properties['x']);
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unset($properties['y']);
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$feature = array(
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'type' => 'Feature',
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'geometry' => array(
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'type' => 'Point',
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'coordinates' => array(
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$data['x'],
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$data['y']
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)
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),
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'properties' => $properties
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);
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# Add feature arrays to feature collection array
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#array_push($geojson['features'], $feature);
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}
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}
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array_push($geojson['features'], $feature);
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fclose($handle);
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header('Content-type: application/json');
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header("Access-Control-Allow-Origin: *");
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echo json_encode($geojson, JSON_NUMERIC_CHECK);
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?>
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