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70 lines
1.7 KiB
PHP
70 lines
1.7 KiB
PHP
<?php
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/*
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Simple script to serve elephpant images in json format.
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This script is called directly by the browser to feed the
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javascript generated banner of elephpant images.
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The structure of the response data is:
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[{
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title: <image title>,
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url: <link to image on flickr>,
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data: <base64 encoded image>
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},{
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...
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}]
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*/
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// determine how many images to serve.
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if (isset($_REQUEST['count'])) {
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$count = intval($_REQUEST['count']);
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} else {
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header('HTTP/1.1 400', true, 400);
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print json_encode(array(
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'error' => "Specify how many elephpants to serve via 'count'."
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));
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exit;
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}
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// read out photo metadata
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$path = dirname(__FILE__) . '/elephpants';
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$json = @file_get_contents($path . '/flickr.json');
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$photos = json_decode($json, true);
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// if no photo data, respond with an error.
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if (!$photos || !is_array($photos)) {
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header('HTTP/1.1 500', true, 500);
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print json_encode(array(
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'error' => "No elephpant metadata available."
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));
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exit;
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}
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// prepare requested number of elephpants at random.
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shuffle($photos);
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$elephpants = array();
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foreach ($photos as $photo) {
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// stop when we have the requested number of photos.
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if (count($elephpants) == $count) {
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break;
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}
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// skip photo if file doesn't exist.
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if (!is_readable($path . '/' . $photo['filename'])) {
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continue;
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}
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// add photo to response array.
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$elephpants[] = array(
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'title' => $photo['title'],
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'url' => "http://flickr.com/photos/" . $photo['owner'] . "/" . $photo['id'],
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'data' => base64_encode(file_get_contents($path . '/' . $photo['filename']))
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);
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}
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print json_encode($elephpants);
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