protected function fixImages( $content ) {

		// Cheap cache
		static $already_done = [];

		$changed = false;
		$html5 = new HtmlParser();
		$dom = $html5->loadHTML( $content );

		$images = $dom->getElementsByTagName( 'img' );
		foreach ( $images as $image ) {
			/** @var \DOMElement $image */
			$old_src = $image->getAttribute( 'src' );
			if ( isset( $already_done[ $old_src ] ) ) {
				$new_src = $already_done[ $old_src ];
			} else {
				$new_src = \Pressbooks\Image\maybe_swap_with_bigger( $old_src );
			}
			if ( $old_src !== $new_src ) {
				$image->setAttribute( 'src', $new_src );
				$image->removeAttribute( 'srcset' );
				$changed = true;
			}
			$already_done[ $old_src ] = $new_src;
		}

		if ( $changed ) {
			$content = $html5->saveHTML( $dom );
		}

		return $content;
	}
protected function fixImages( $content ) {

		// Cheap cache
		static $already_done = [];

		$changed = false;
		$html5 = new HtmlParser();
		$dom = $html5->loadHTML( $content );

		$images = $dom->getElementsByTagName( 'img' );
		foreach ( $images as $image ) {
			/** @var \DOMElement $image */
			$old_src = $image->getAttribute( 'src' );
			if ( isset( $already_done[ $old_src ] ) ) {
				$new_src = $already_done[ $old_src ];
			} else {
				$new_src = \Pressbooks\Image\maybe_swap_with_bigger( $old_src );
			}
			if ( $old_src !== $new_src ) {
				$image->setAttribute( 'src', $new_src );
				$image->removeAttribute( 'srcset' );
				$changed = true;
			}
			$already_done[ $old_src ] = $new_src;
		}

		if ( $changed ) {
			$content = $html5->saveHTML( $dom );
		}

		return $content;
	}
protected function fixImages ( $ content ) { // Cheap cache static $ already_done = [ ] ; $ changed = false ; $ html5 = new HtmlParser ( ) ; $ dom = $ html5 -> loadHTML ( $ content ) ; $ images = $ dom -> getElementsByTagName ( 'img' ) ; foreach ( $ images as $ image ) { /** @var \DOMElement $image */ $ old_src = $ image -> getAttribute ( 'src' ) ; if ( isset ( $ already_done [ $ old_src ] ) ) { $ new_src = $ already_done [ $ old_src ] ; } else { $ new_src = \ Pressbooks \ Image \ maybe_swap_with_bigger ( $ old_src ) ; } if ( $ old_src !== $ new_src ) { $ image -> setAttribute ( 'src' , $ new_src ) ; $ image -> removeAttribute ( 'srcset' ) ; $ changed = true ; } $ already_done [ $ old_src ] = $ new_src ; } if ( $ changed ) { $ content = $ html5 -> saveHTML ( $ dom ) ; } return $ content ; }
Replace every image with the bigger original image

@param $content

@return string
Replace every image with the bigger original image