Yoast\WP\SEO\Images\Application

Image_Content_Extractor::gather_images_domdocument │ protected │ Yoast 1.0

Gathers all images from content with DOMDocument() and returns them along with their IDs, if possible.

Метод класса: Image_Content_Extractor{}

Хуки из метода

Возвращает

int[]. An associated array of image IDs, keyed by their URL.

Использование

// protected - в коде основоного (родительского) или дочернего класса
$result = $this->gather_images_domdocument( $content );
$content(строка) (обязательный)
The content.

Код Image_Content_Extractor::gather_images_domdocument() Yoast 28.6

yoast/src/images/Application/image-content-extractor.php 
protected function gather_images_domdocument( $content ) {
	$images  = [];
	$charset = \get_bloginfo( 'charset' );

	/**
	 * Filter 'wpseo_image_attribute_containing_id' - Allows filtering what attribute will be used to extract image IDs from.
	 *
	 * Defaults to "class", which is where WP natively stores the image IDs, in a `wp-image-<ID>` format.
	 *
	 * @api string The attribute to be used to extract image IDs from.
	 */
	$attribute = \apply_filters( 'wpseo_image_attribute_containing_id', 'class' );

	\libxml_use_internal_errors( true );
	$post_dom = new DOMDocument();
	$post_dom->loadHTML( '<?xml encoding="' . $charset . '">' . $content );
	\libxml_clear_errors();

	foreach ( $post_dom->getElementsByTagName( 'img' ) as $img ) {
		$src     = \htmlentities( $img->getAttribute( 'src' ), ( \ENT_QUOTES | \ENT_SUBSTITUTE | \ENT_HTML401 ), $charset );
		$classes = $img->getAttribute( $attribute );

		$id = $this->extract_id_of_classes( $classes );

		$images[ $src ] = $id;
	}

	return $images;
}