failed() public method

* FeedTime::timestamp()
public failed ( )
 /**
  * MagpieFromSimplePie::normalize
  *
  * @uses MagpieFromSimplePie::is_atom
  * @uses MagpieFromSimplePie::is_rss
  * @uses MagpieFromSimplePie::normalize_element
  * @uses MagpieFromSimplePie::normalize_author_inheritance
  * @uses MagpieFromSimplePie::normalize_atom_person
  * @uses MagpieFromSimplePie::normalize_enclosure
  * @uses MagpieFromSimplePie::normalize_category
  * @uses MagpieFromSimplePie::normalize_dc_subject
  * @uses FeedTime
  * @uses FeedTime::timestamp
  */
 function normalize()
 {
     do_action('feedwordpress_magpiefromsimplepie_normalize_pre', $this);
     if (!is_null($this->channel)) {
         // Normalize channel data
         if ($this->is_atom()) {
             // Atom 1.0 elements <=> Atom 0.3 elements (Thanks, o brilliant wordsmiths of the Atom 1.0 standard!)
             if ($this->feed_version() < 1.0) {
                 $this->normalize_element($this->channel, 'tagline', $this->channel, 'subtitle');
                 $this->normalize_element($this->channel, 'copyright', $this->channel, 'rights');
                 $this->normalize_element($this->channel, 'modified', $this->channel, 'updated');
             } else {
                 $this->normalize_element($this->channel, 'subtitle', $this->channel, 'tagline');
                 $this->normalize_element($this->channel, 'rights', $this->channel, 'copyright');
                 $this->normalize_element($this->channel, 'updated', $this->channel, 'modified');
             }
             $this->normalize_element($this->channel, 'author', $this->channel['dc'], 'creator', 'normalize_atom_person');
             $this->normalize_element($this->channel, 'contributor', $this->channel['dc'], 'contributor', 'normalize_atom_person');
             // Atom elements to RSS elements
             $this->normalize_element($this->channel, 'subtitle', $this->channel, 'description');
             if (isset($this->channel['logo'])) {
                 $this->normalize_element($this->channel, 'logo', $this->image, 'url');
                 $this->normalize_element($this->channel, 'link', $this->image, 'link');
                 $this->normalize_element($this->channel, 'title', $this->image, 'title');
             }
         } elseif ($this->is_rss()) {
             // Normalize image element from where stupid MagpieRSS puts it
             //$this->normalize_element($this->channel, 'image_title', $this->image, 'title');
             //$this->normalize_element($this->channel, 'image_link', $this->image, 'link');
             //$this->normalize_element($this->channel, 'image_url', $this->image, 'url');
             // ... and, gag, textInput
             //$this->normalize_element($this->channel, 'textinput_title', $this->textinput, 'title');
             //$this->normalize_element($this->channel, 'textinput_link', $this->textinput, 'link');
             //$this->normalize_element($this->channel, 'textinput_name', $this->textinput, 'name');
             //$this->normalize_element($this->channel, 'textinput_description', $this->textinput, 'description');
             // RSS elements to Atom elements
             $this->normalize_element($this->channel, 'description', $this->channel, 'tagline');
             // Atom 0.3
             $this->normalize_element($this->channel, 'description', $this->channel, 'subtitle');
             // Atom 1.0 (yay wordsmithing!)
             $this->normalize_element($this->image, 'url', $this->channel, 'logo');
         }
     }
     if (!is_null($this->items)) {
         // Now loop through and normalize item data
         for ($i = 0; $i < count($this->items); $i++) {
             $item = $this->items[$i];
             // if atom populate rss fields and normalize 0.3 and 1.0 feeds
             if ($this->is_atom()) {
                 // Atom 1.0 elements <=> Atom 0.3 elements
                 if ($this->feed_version() < 1.0) {
                     $this->normalize_element($item, 'modified', $item, 'updated');
                     $this->normalize_element($item, 'issued', $item, 'published');
                 } else {
                     $this->normalize_element($item, 'updated', $item, 'modified');
                     $this->normalize_element($item, 'published', $item, 'issued');
                 }
                 $this->normalize_author_inheritance($item, $this->originals[$i]);
                 // Atom elements to RSS elements
                 $this->normalize_element($item, 'author', $item['dc'], 'creator', 'normalize_atom_person');
                 $this->normalize_element($item, 'contributor', $item['dc'], 'contributor', 'normalize_atom_person');
                 $this->normalize_element($item, 'summary', $item, 'description');
                 $this->normalize_element($item, 'atom_content', $item['content'], 'encoded');
                 $this->normalize_element($item, 'link_enclosure', $item, 'enclosure', 'normalize_enclosure');
                 // Categories
                 if (isset($item['category#'])) {
                     // Atom 1.0 categories to dc:subject and RSS 2.0 categories
                     $this->normalize_element($item, 'category', $item['dc'], 'subject', 'normalize_category');
                 } elseif (isset($item['dc']['subject#'])) {
                     // dc:subject to Atom 1.0 and RSS 2.0 categories
                     $this->normalize_element($item['dc'], 'subject', $item, 'category', 'normalize_dc_subject');
                 }
                 // Normalized item timestamp
                 $item_date = isset($item['published']) ? $item['published'] : $item['updated'];
             } elseif ($this->is_rss()) {
                 // RSS elements to Atom elements
                 $this->normalize_element($item, 'description', $item, 'summary');
                 $this->normalize_element($item, 'enclosure', $item, 'link_enclosure', 'normalize_enclosure');
                 // Categories
                 if (isset($item['category#'])) {
                     // RSS 2.0 categories to dc:subject and Atom 1.0 categories
                     $this->normalize_element($item, 'category', $item['dc'], 'subject', 'normalize_category');
                 } elseif (isset($item['dc']['subject#'])) {
                     // dc:subject to Atom 1.0 and RSS 2.0 categories
                     $this->normalize_element($item['dc'], 'subject', $item, 'category', 'normalize_dc_subject');
                 }
                 // Normalized item timestamp
                 if (isset($item['pubdate'])) {
                     $item_date = $item['pubdate'];
                 } elseif (isset($item['dc']['date'])) {
                     $item_date = $item['dc']['date'];
                 } else {
                     $item_date = null;
                 }
             }
             if ($item_date) {
                 $date_timestamp = new FeedTime($item_date);
                 if (!$date_timestamp->failed()) {
                     $item['date_timestamp'] = $date_timestamp->timestamp();
                 }
             }
             $this->items[$i] = $item;
         }
     }
     do_action('feedwordpress_magpiefromsimplepie_normalize_post', $this);
 }