Rss-Bridge/bridges/NasaApodBridge.php

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<?php
class NasaApodBridge extends BridgeAbstract{
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public function loadMetadatas() {
$this->maintainer = "corenting";
$this->name = "NASA APOD Bridge";
$this->uri = "http://apod.nasa.gov/apod/astropix.html";
$this->description = "Returns the 3 latest NASA APOD pictures and explanations";
$this->update = '2016-08-17';
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}
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public function collectData(array $param) {
$html = $this->file_get_html('http://apod.nasa.gov/apod/archivepix.html') or $this->returnServerError('Error while downloading the website content');
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$list = explode("<br>", $html->find('b', 0)->innertext);
for($i = 0; $i < 3;$i++)
{
$line = $list[$i];
$item = new \Item();
$uri_page = $html->find('a',$i + 3)->href;
$uri = 'http://apod.nasa.gov/apod/'.$uri_page;
$item->uri = $uri;
$picture_html = $this->file_get_html($uri);
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$picture_html_string = $picture_html->innertext;
//Extract image and explanation
$media = $picture_html->find('p',1)->innertext;
$media = strstr($media, '<br>');
$media = preg_replace('/<br>/', '', $media, 1);
$explanation = $picture_html->find('p',2)->innertext;
//Extract date from the picture page
$date = explode(" ", $picture_html->find('p',1)->innertext);
$item->timestamp = strtotime($date[4].$date[3].$date[2]);
//Other informations
$item->content = $media.'<br />'.$explanation;
$item->title = $picture_html->find('b',0)->innertext;
$this->items[] = $item;
}
}
public function getCacheDuration(){
return 3600*12; // 12 hours
}
}