extract() public method

You can extract attributes or/and the node value (_text). Example: $crawler->filter('h1 a')->extract(array('_text', 'href'));
public extract ( array $attributes ) : array
$attributes array An array of attributes
return array An array of extracted values
Crawler Class Documentation
Beispiel #1
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 public function extract($attribute, $asString = false)
 {
     return true === $asString ? implode(null, parent::extract($attribute)) : parent::extract($attribute);
 }
Beispiel #2
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 /**
  * @param Crawler $block
  * @return array
  */
 public function getSimilarSiblingsInfo(Crawler $block)
 {
     $all_siblings = $block->parents()->first()->children();
     $siblings = [$block];
     $sample_node = $block->getNode(0);
     $sample_tag = $block->nodeName();
     $sample_classes = explode(' ', $block->extract(['class'])[0]);
     foreach ($all_siblings as $sibling) {
         if ($sample_node->isSameNode($sibling)) {
             continue;
         }
         $to_add = false;
         if ($sibling->nodeName == $sample_tag) {
             if ($sample_classes === FALSE) {
                 $to_add = true;
             } else {
                 $sibling_classes = explode(' ', $sibling->getAttribute('class'));
                 $matched_classes = array_intersect($sample_classes, $sibling_classes);
                 if (!empty($matched_classes)) {
                     if ($matched_classes != $sample_classes) {
                         $sample_classes = $matched_classes;
                     }
                     $to_add = true;
                 }
             }
         }
         if ($to_add) {
             $siblings[] = new Crawler($sibling);
         }
     }
     return [$siblings, ['tag' => $sample_tag, 'classes' => $sample_classes]];
 }
Beispiel #3
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 /**
  * @param Crawler $image
  * @return string
  */
 public function getSource(Crawler $image)
 {
     $source = $image->extract(['src'])[0];
     if (strpos($source, $this->base_url) !== FALSE) {
         return $source;
     }
     $delimiter = '';
     if ($source[0] != '/') {
         $delimiter = '/';
     }
     return $this->base_url . $delimiter . $source;
 }