: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace AMPforWP\AMPVendor;
if ( ! defined( 'ABSPATH' ) ) {
require_once( AMP__VENDOR__DIR__ . '/includes/utils/class-amp-dom-utils.php' );
require_once( AMP__VENDOR__DIR__ . '/includes/sanitizers/class-amp-base-sanitizer.php' );
require_once( AMP__VENDOR__DIR__ . '/includes/embeds/class-amp-base-embed-handler.php' );
require_once( AMP__VENDOR__DIR__ . '/includes/embeds/class-amp-playlist-embed-handler.php' );
private $amp_content = '';
private $amp_scripts = array();
private $amp_styles = array();
private $embed_handler_classes = array();
private $sanitizer_classes = array();
public function __construct( $content, $embed_handler_classes, $sanitizer_classes, $args = array() ) {
$this->content = $content;
$this->embed_handler_classes = $embed_handler_classes;
$this->sanitizer_classes = $sanitizer_classes;
public function get_amp_content() {
return $this->amp_content;
public function get_amp_scripts() {
return $this->amp_scripts;
public function get_amp_styles() {
return $this->amp_styles;
private function transform() {
$content = $this->content;
// Check for AMP Components #3422
AMP_Content_Sanitizer::sanitize($content, array('AMP_Tag_And_Attribute_Sanitizer'=> array() ) );
// First, embeds + the_content filter
$embed_handlers = $this->register_embed_handlers();
if( (!empty($this->args)) && (!empty($this->args['non-content'])) ){
if('non-content' == $this->args['non-content']){
$content = apply_filters( 'the_content', $content );
$content = apply_filters( 'amp_general_content', $content );
$content = apply_filters( 'the_content', $content );
$content = apply_filters( 'amp_pagebuilder_content', $content );
$this->unregister_embed_handlers( $embed_handlers );
// Then, sanitize to strip and/or convert non-amp content
$content = $this->sanitize( $content );
$this->amp_content = $content;
private function add_scripts( $scripts ) {
$this->amp_scripts = array_merge( $this->amp_scripts, $scripts );
private function add_styles( $styles ) {
$this->amp_styles = array_merge( $this->amp_styles, $styles );
private function register_embed_handlers() {
$embed_handlers = array();
foreach ( $this->embed_handler_classes as $embed_handler_class => $args ) {
if ( class_exists('AMPforWP\\AMPVendor\\'.$embed_handler_class) ) {
$embed_handler_class = 'AMPforWP\\AMPVendor\\'.$embed_handler_class;
$embed_handler = new $embed_handler_class( array_merge( $this->args, $args ) );
if ( ! is_subclass_of( $embed_handler, 'AMPforWP\\AMPVendor\\AMP_Base_Embed_Handler' ) ) {
_doing_it_wrong( __METHOD__, sprintf( esc_html__( 'Embed Handler (%s) must extend `AMP_Embed_Handler`', 'accelerated-mobile-pages' ), $embed_handler_class ), '0.1' );
$embed_handler->register_embed();
$embed_handlers[] = $embed_handler;
private function unregister_embed_handlers( $embed_handlers ) {
foreach ( $embed_handlers as $embed_handler ) {
$this->add_scripts( $embed_handler->get_scripts() );
$embed_handler->unregister_embed();
private function sanitize( $content ) {
list( $sanitized_content, $scripts, $styles ) = AMP_Content_Sanitizer::sanitize( $content, $this->sanitizer_classes, $this->args );
$this->add_scripts( $scripts );
$this->add_styles( $styles );
return $sanitized_content;
class AMP_Content_Sanitizer {
public static function sanitize( $content, $sanitizer_classes, $global_args = array() ) {
$amp_base_sanitizer = '';
$dom = AMP_DOM_Utils::get_dom_from_content( $content );
if ( ! empty($sanitizer_classes) ) {
foreach ( $sanitizer_classes as $sanitizer_class => $args ) {
if ( class_exists('AMPforWP\\AMPVendor\\'.$sanitizer_class) ) {
$sanitizer_class = 'AMPforWP\\AMPVendor\\'.$sanitizer_class;
$amp_base_sanitizer = 'AMPforWP\\AMPVendor\\AMP_Base_Sanitizer';
elseif(function_exists('amp_activate') && class_exists('AMP_Base_Sanitizer') ) {
$amp_base_sanitizer = 'AMP_Base_Sanitizer';
if ( ! class_exists( $sanitizer_class ) ) {
_doing_it_wrong( __METHOD__, sprintf( esc_html__( 'Sanitizer (%s) class does not exist', 'accelerated-mobile-pages' ), esc_html( $sanitizer_class ) ), '0.4.1' );
$sanitizer = new $sanitizer_class( $dom, array_merge( $global_args, $args ) );
if ( ! is_subclass_of( $sanitizer, $amp_base_sanitizer) ) {
_doing_it_wrong( __METHOD__, sprintf( esc_html__( 'Sanitizer (%s) must extend `AMP_Base_Sanitizer`', 'accelerated-mobile-pages' ), esc_html( $sanitizer_class ) ), '0.1' );
$scripts = array_merge( $scripts, $sanitizer->get_scripts() );
$styles = array_merge( $styles, $sanitizer->get_styles() );
$sanitized_content = AMP_DOM_Utils::get_content_from_dom( $dom );
return array( $sanitized_content, $scripts, $styles );