doc = new DOMDocument(); $this->doc->loadXML($data); $this->error = $this->format_error(libxml_get_last_error()); libxml_clear_errors(); $this->items = array(); } function init() { $root = $this->doc->firstChild; $xpath = new DOMXPath($this->doc); $xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom'); $this->xpath = $xpath; $root = $xpath->query("(//atom:feed|//channel)")->item(0); if ($root) { switch ($root->tagName) { case "channel": $this->type = $this::FEED_RSS; break; case "feed": $this->type = $this::FEED_ATOM; break; default: $this->error = "Unknown/unsupported feed type"; return; } switch ($this->type) { case $this::FEED_ATOM: $title = $xpath->query("//atom:feed/atom:title")->item(0); if ($title) { $this->title = $title->nodeValue; } $link = $xpath->query("//atom:feed/atom:link[not(@rel)]")->item(0); if ($link && $link->hasAttributes()) { $this->link = $link->getAttribute("href"); } $articles = $xpath->query("//atom:entry"); foreach ($articles as $article) { array_push($this->items, new FeedItem_Atom($article)); } break; case $this::FEED_RSS: $title = $xpath->query("//channel/title")->item(0); if ($title) { $this->title = $title->nodeValue; } $link = $xpath->query("//channel/link")->item(0); if ($link && $link->hasAttributes()) { $this->link = $link->getAttribute("href"); } $articles = $xpath->query("//channel/item"); foreach ($articles as $article) { array_push($this->items, new FeedItem_RSS($article)); } break; } } } function format_error($error) { if ($error) { return sprintf("LibXML error %s at line %d (column %d): %s", $error->code, $error->line, $error->column, $error->message); } else { return ""; } } function error() { return $this->error; } function get_link() { return $this->link; } function get_title() { return $this->title; } function get_items() { return $this->items; } function get_links($rel) { $rv = array(); switch ($this->type) { case $this::FEED_ATOM: $links = $this->xpath->query("//atom:feed/atom:link"); foreach ($links as $link) { if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) { array_push($rv, $link->getAttribute('href')); } } break; case $this::FEED_RSS: $links = $this->xpath->query("//channel/link"); foreach ($links as $link) { if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) { array_push($rv, $link->getAttribute('href')); } } break; } return $rv; } } ?>