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<?php |
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// This file is part of BOINC. |
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// http://boinc.berkeley.edu |
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// Copyright (C) 2021 University of California |
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// |
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// BOINC is free software; you can redistribute it and/or modify it |
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// under the terms of the GNU Lesser General Public License |
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// as published by the Free Software Foundation, |
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// either version 3 of the License, or (at your option) any later version. |
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// |
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// BOINC is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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// See the GNU Lesser General Public License for more details. |
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// |
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// You should have received a copy of the GNU Lesser General Public License |
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>. |
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// functions for fetching and displaying RSS feeds |
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require_once("../inc/cache.inc"); |
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// parse an RSS feed into objects |
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// |
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function get_rss_feed($url) { |
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$x = @simplexml_load_file($url); |
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if (!$x) return null; |
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$x = $x->channel; |
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$items = array(); |
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foreach ($x->item as $item) { |
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$y = new StdClass; |
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$y->title = (string)$item->title; |
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$y->link = (string)$item->link; |
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$y->description = (string)$item->description; |
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$y->pubDate = (string)$item->pubDate; |
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$items[] = $y; |
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} |
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return $items; |
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} |
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// same, but cache the results; $dur is the refresh period |
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// |
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function get_rss_feed_cached($url, $dur) { |
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$d = get_cached_data($dur, $url); |
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if ($d) { |
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return unserialize($d); |
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} |
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$items = get_rss_feed($url); |
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if (!$items) return null; |
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set_cached_data($dur, serialize($items), $url); |
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return $items; |
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} |
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// Show up to $n items. |
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// You can pass a function $filter; |
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// if $filter(item) returns true, don't show it. |
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// |
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function show_rss_items($items, $n=0, $filter=null) { |
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$i = 0; |
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foreach ($items as $item) { |
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if ($filter && $filter($item)) { |
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continue; |
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} |
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echo sprintf( |
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'<h4>%s</h4> |
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<p> |
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%s |
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<p> |
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<a href=%s>View article</a> · %s |
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<hr> |
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', |
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$item->title, |
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$item->description, |
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$item->link, |
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$item->pubDate |
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); |
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$i++; |
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if ($i == $n) { |
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break; |
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} |
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} |
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} |
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?> |
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BOINC /
boinc
Loading history...
This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.