mirror of
https://github.com/klokantech/tileserver-php.git
synced 2025-01-17 22:28:37 +01:00
82 lines
2.7 KiB
PHP
82 lines
2.7 KiB
PHP
<?php
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// Based on: https://github.com/Zverik/mbtiles-php
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// Read: https://github.com/klokantech/tileserver-php/issues/1
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// TODO: clean the code!!!
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if (!is_file($_GET['tileset'])) {
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header('HTTP/1.0 404 Not Found');
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echo "<h1>404 Not Found</h1>";
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echo "TileServer.php could not found what you requested.";
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die();
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// TODO: if ($_GET['ext'] == 'png') { ...
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// TODO: better image 256x256px !!!
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// header("Content-type: image/png");
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//print("\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01\x00\x00\x00\x01\x08\x06\x00\x00\x00\x1f\x15\xc4\x89\x00\x00\x00\rIDAT\x08\xd7c````\x00\x00\x00\x05\x00\x01^\xf3*:\x00\x00\x00\x00IEND\xaeB`\x82");
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}
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if( isset($_GET['tileset']) ) {
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$tileset = $_GET['tileset'];
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$flip = true;
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try {
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$db = new PDO('sqlite:'.$tileset,'','',array(PDO::ATTR_PERSISTENT => true));
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if( !isset($db) ) {
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header('Content-type: text/plain');
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print 'Incorrect tileset name: '.$_GET['tileset'];
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exit;
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}
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// http://c.tile.openstreetmap.org/12/2392/1190.png
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$z = floatval($_GET['z']);
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$y = floatval($_GET['y']);
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$x = floatval($_GET['x']);
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if( $flip ) {
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$y = pow(2, $z) - 1 - $y;
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}
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$result = $db->query('select tile_data as t from tiles where zoom_level='.$z.' and tile_column='.$x.' and tile_row='.$y);
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$data = $result->fetchColumn();
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if( !isset($data) || $data === FALSE ) {
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// TODO: Put here ready to use empty tile!!!
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$png = imagecreatetruecolor(256, 256);
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imagesavealpha($png, true);
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$trans_colour = imagecolorallocatealpha($png, 0, 0, 0, 127);
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imagefill($png, 0, 0, $trans_colour);
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header('Content-type: image/png');
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imagepng($png);
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//header($_SERVER['SERVER_PROTOCOL'].' 404 Not Found');
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} else {
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$result = $db->query('select value from metadata where name="format"');
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$resultdata = $result->fetchColumn();
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$format = isset($resultdata) && $resultdata !== FALSE ? $resultdata : 'png';
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if( $format == 'jpg' )
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$format = 'jpeg';
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header('Content-type: image/'.$format);
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print $data;
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}
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} catch( PDOException $e ) {
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header('Content-type: text/plain');
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print 'Error querying the database: '.$e->getMessage();
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}
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}
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/*
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function getbaseurl() {
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return 'http://'.$_SERVER['HTTP_HOST'].preg_replace('/\/(1.0.0\/)?[^\/]*$/','/',$_SERVER['REQUEST_URI']);
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}
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*/
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function readparams( $db ) {
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$params = array();
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$result = $db->query('select name, value from metadata');
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while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
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$params[$row['name']] = $row['value'];
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}
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return $params;
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}
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function readzooms( $db ) {
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$zooms = array();
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$result = $db->query('select zoom_level from tiles group by zoom_level order by zoom_level');
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while ($zoom = $result->fetchColumn()) {
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$zooms[] = $zoom;
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}
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return $zooms;
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}
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?>
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