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| 1 | <?php |
| 2 | /** |
| 3 | * Stats AMP_Consent_Sanitizer |
| 4 | * |
| 5 | * @package automattic/jetpack-stats |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Stats; |
| 9 | |
| 10 | /** |
| 11 | * Removes the Stats AMP pixel from pages that have no `amp-consent` to hold it. |
| 12 | * |
| 13 | * `data-block-on-consent` does nothing without an `amp-consent`, so the pixel would count visitors who were never asked. |
| 14 | * |
| 15 | * @since $$next-version$$ |
| 16 | */ |
| 17 | class AMP_Consent_Sanitizer extends \AMP_Base_Sanitizer { |
| 18 | |
| 19 | /** |
| 20 | * Remove the Stats pixel unless the document has an `amp-consent`. |
| 21 | * |
| 22 | * @return void |
| 23 | */ |
| 24 | public function sanitize() { |
| 25 | $dom = $this->dom; |
| 26 | '@phan-var \DOMDocument $dom'; // AMP's Document subclass: the generated stub loses its `use` import. |
| 27 | if ( $dom->getElementsByTagName( 'amp-consent' )->length > 0 ) { |
| 28 | return; |
| 29 | } |
| 30 | |
| 31 | // Copy the live list first: removing nodes while iterating it skips elements. |
| 32 | foreach ( iterator_to_array( $dom->getElementsByTagName( 'amp-pixel' ) ) as $pixel ) { |
| 33 | if ( str_starts_with( $pixel->getAttribute( 'src' ), Tracking_Pixel::AMP_PIXEL_URL ) ) { |
| 34 | // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase |
| 35 | $pixel->parentNode->removeChild( $pixel ); |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | } |