settings === null) {
$this->settings = berqwp_get_page_params(home_url());
}
add_filter('berqwp_photon_before_closing_body', [$this, 'img_lazy_load_js']);
add_filter('berqwp_photon_before_closing_body', [$this, 'video_lazy_load_js']);
add_filter('berqwp_photon_before_closing_body', [$this, 'iframe_lazy_load_js']);
add_filter('berqwp_photon_before_closing_body', [$this, 'dynamic_js_loading_script']);
add_filter('berqwp_photon_before_closing_body', [$this, 'dynamic_css_loading_script']);
add_filter('berqwp_photon_before_closing_body', [$this, 'prerender_on_hover']);
}
function start_cache() {
add_action('template_redirect', [$this, 'buffer_start'], 2);
}
function set_slug($slug) {
$this->page_slug = $slug;
}
function set_page($page_url) {
$this->page_url = $page_url;
}
function buffer_start() {
ob_start([$this, 'buffer_end']);
}
function prerender_on_hover($script) {
if ($this->settings['prerender_link']) {
$script .= "
";
}
return $script;
}
function video_lazy_load_js($script) {
if ($this->settings['lazy_load_videos']) {
$script .= "
";
}
return $script;
}
function iframe_lazy_load_js($script) {
if ($this->settings['youtube_lazyloading']) {
$script .= "
";
}
return $script;
}
static function url_to_path($url)
{
if (strpos($url, '?') !== false) {
$url = explode('?', $url)[0];
}
if (strpos($url, '#') !== false) {
$url = explode('#', $url)[0];
}
// Handle relative URLs
if (strpos($url, '//') === 0) {
return realpath(ABSPATH . ltrim($url, '/'));
}
$content_url = content_url();
$content_dir = WP_CONTENT_DIR;
if (strpos($url, $content_url) === 0) {
// var_dump(realpath(
// str_replace($content_url, $content_dir, $url)
// ));
return str_replace($content_url, $content_dir, $url);
}
// Fallback for site root files
$site_url = get_site_url('/');
if (strpos($url, $site_url) === 0) {
return realpath(
str_replace($site_url, ABSPATH, $url)
);
}
return false;
}
function img_lazy_load_js($script) {
if ($this->settings['img_lazyloading']) {
$script .= "
";
}
return $script;
}
function dynamic_css_loading_script($script) {
if ($this->settings['css_optimization'] == 'asynchronous' || $this->settings['css_optimization'] == 'delay') {
$script .= "
";
if ($this->settings['css_optimization'] == 'asynchronous') {
$script .= "
";
}
if ($this->settings['css_optimization'] == 'delay') {
$script .= "
";
}
}
return $script;
}
function dynamic_js_loading_script($script) {
if ($this->settings['js_optimization'] == 'asynchronous' || $this->settings['js_optimization'] == 'delay') {
$script .= "
";
if ($this->settings['js_optimization'] == 'asynchronous') {
$script .= "
";
}
if ($this->settings['js_optimization'] == 'delay') {
$script .= "
";
}
}
return $script;
}
function optimize_js($buffer) {
$dom = HtmlDomParser::str_get_html($buffer);
$js_excludes = $this->settings['exclude_js'];
$js_excludes = array_map(function ($kw) {
return sanitize_text_field(trim($kw));
}, $js_excludes);
foreach ($dom->find('script') as $element) {
$script_src = $element->src;
$outerhtml = $element->outertext;
if (strpos($outerhtml, 'document.write(') !== false) {
continue;
}
if (strpos($outerhtml, '$zoho.salesiq = ') !== false) {
continue;
}
if (strpos($outerhtml, 'CRLeadStar.init') !== false) {
continue;
}
if (!empty($element->type) && $element->type !== 'text/javascript' && $element->type !== 'application/javascript' && $element->type !== 'module') {
continue;
}
if ($element->hasAttribute('data-berqwp-exclude')) {
continue;
}
// exclude script tags
if (!empty($js_excludes)) {
foreach ($js_excludes as $exclude_kw) {
if (strpos($outerhtml, $exclude_kw) !== false) {
if ($this->settings['defer_excluded_js'] && !$element->hasAttribute('async')) {
$element->setAttribute('defer', 'defer');
}
continue 2;
}
}
}
if ($this->settings['js_optimization'] == 'defer') {
if (!$element->hasAttribute('async')) {
$element->setAttribute('defer', 'defer');
}
continue;
}
if (empty($element->type) || $element->type == 'text/javascript') {
$element->setAttribute('data-type', 'text/javascript');
$element->type = 'text/bwp-script';
} else {
$element->setAttribute('data-type', esc_attr($element->type));
$element->type = 'text/bwp-script';
}
}
return (string) $dom;
}
function lazy_load_videos($buffer) {
$dom = HtmlDomParser::str_get_html($buffer);
foreach ($dom->find('video') as $element) {
$outerhtml = $element->outertext;
$parent = $element->parent();
if (strpos($outerhtml, 'video-js') !== false) {
continue;
}
if (strpos($outerhtml, 'mg_self-hosted-video') !== false) {
continue;
}
if (!empty($element->src)) {
$original_src = $element->src;
// $video->attr['data-berqwpsrc'] = $original_src;
$element->setAttribute('data-berqwpsrc', $original_src);
$element->removeAttribute('src');
}
// Handle each element within the video tag
foreach ($element->find('source') as $source) {
if (!empty($source->src)) {
$original_src = $source->src;
// $source->attr['data-berqwpsrc'] = $original_src;
$source->setAttribute('data-berqwpsrc', $original_src);
$source->removeAttribute('src');
}
unset($source);
}
$class = $element->getAttribute('class');
$class .= ' berqwp-lazy-video';
$element->setAttribute('class', $class);
$element->setAttribute('preload', 'none');
// $element->attr[' preload'] = 'none';
}
return (string) $dom;
}
function lazy_load_images($buffer) {
$dom = HtmlDomParser::str_get_html($buffer);
$image_excludes = $this->settings['exclude_img_lazy_load'];
$image_excludes = array_map(function ($kw) {
return sanitize_text_field(trim($kw));
}, $image_excludes);
foreach ($dom->find('img') as $element) {
if (!$element->hasAttribute('src') || empty($element->src)) {
continue;
}
$img_src = $element->src;
$outerhtml = $element->outertext;
$img_path = self::url_to_path($img_src);
// exclude lazy load
if (!empty($image_excludes)) {
foreach ($image_excludes as $exclude_kw) {
if (strpos($outerhtml, $exclude_kw) !== false) {
continue 2;
}
}
}
if (strpos($img_src, 'data:') === 0) {
continue;
}
if (strpos($img_src, ';base64,') !== false) {
continue;
}
if (strpos($outerhtml, 'rs-lazyload') !== false) {
continue;
}
if (strpos($outerhtml, 'mfn-lazy') !== false) {
continue;
}
if (strpos($outerhtml, 'data-dbsrc=') !== false) {
continue;
}
if (strpos($outerhtml, 'data-orig-src=') !== false) {
continue;
}
if (strpos($outerhtml, 'facebook.com') !== false) {
continue;
}
if (strpos($img_src, '${') !== false) {
continue;
}
// Skip smush lazy loading
if (strpos($img_src, '--smush-placeholder-width') !== false) {
continue;
}
// wpbackery background image
if (strpos($img_src, 'class="background-image"') !== false) {
continue;
}
// lscache lazy load
if (strpos($img_src, 'class="lazyload"') !== false) {
continue;
}
// salient lazy load
if (strpos($img_src, 'data-nectar-img-src') !== false) {
continue;
}
$width = $element->width;
$height = $element->height;
if (!empty($img_path) && file_exists($img_path) && !$element->hasAttribute('width') && !$element->hasAttribute('height')) {
list($width, $height) = getimagesize($img_path);
}
$element->removeAttribute('src');
$element->setAttribute('data-berqwpsrc', $img_src);
if ($element->hasAttribute('srcset')) {
$srcset = $element->srcset;
$element->removeAttribute('srcset');
$element->setAttribute('data-berqwp-srcset', $srcset);
}
if (!empty($width) && !empty($height)) {
$svg = '';
$base64Svg = base64_encode($svg);
// Create data URI
$ph_webp_url = 'data:image/svg+xml;base64,' . $base64Svg;
} else {
$ph_webp_url = 'data:image/gif;placeholder=MjQxOjM1NQ==-1;base64,R0lGODlhAQABAIABAAAAAP///yH5BAEAAAEALAAAAAABAAEAAAICTAEAOw==';
}
$element->setAttribute('src', $ph_webp_url);
$element->setAttribute('decoding', 'async');
}
return (string) $dom;
}
private function extract_template_scripts( $buffer ) {
$placeholders = [];
$pattern = '/]*\btype=["\'](?:text\/template|text\/x-template|text\/x-handlebars-template|text\/x-handlebars|text\/ng-template)["\'])[^>]*>.*?<\/script>/is';
$result = preg_match_all( $pattern, $buffer, $matches );
if ( $result === false || $result === 0 ) {
return [ $buffer, $placeholders ];
}
foreach ( $matches[0] as $index => $script_block ) {
$placeholder = '';
$placeholders[ $placeholder ] = $script_block;
$buffer = str_replace( $script_block, $placeholder, $buffer );
}
return [ $buffer, $placeholders ];
}
private function restore_template_scripts( $buffer, $placeholders ) {
if ( empty( $placeholders ) ) {
return $buffer;
}
foreach ( $placeholders as $placeholder => $original_block ) {
$buffer = str_replace( $placeholder, $original_block, $buffer );
}
return $buffer;
}
function lazy_load_iframes($buffer) {
$dom = HtmlDomParser::str_get_html($buffer);
foreach ($dom->find('iframe') as $element) {
$outerhtml = $element->outertext;
$outerhtml = apply_filters('photon_before_iframe_optimization', $outerhtml);
$isyoutube = false;
if ($this->settings['preload_yt_poster']) {
if (preg_match('/youtube\.com\/embed\/([a-zA-Z0-9_-]+)/', $element->src, $matches)) {
$videoId = $matches[1];
$isyoutube = true;
// Generate the thumbnail URL
$thumbnailUrl = "https://img.youtube.com/vi/{$videoId}/hqdefault.jpg";
$highresthumbnailUrl = "https://img.youtube.com/vi/{$videoId}/maxresdefault.jpg";
if (strpos($element->src, 'autoplay=1') !== false && strpos($element->src, 'mute=') === false) {
$element->setAttribute('src', $element->src . "&mute=1");
}
// Generate lazy-load HTML content for srcdoc
$srcdocContent = <<
*{padding:0;margin:0;overflow:hidden}
.play-button {
width: 70px;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
cursor: pointer;
}
HTML;
// Update the iframe attributes
$element->setAttribute('srcdoc', $srcdocContent);
$element->setAttribute('src', $element->src); // Remove immediate src loading
}
if ($isyoutube && $element->hasAttribute('data-berqWPexclude')) {
continue;
}
}
if (strpos($outerhtml, 'youtube.com') !== false && !$element->hasAttribute('referrerpolicy')) {
$element->setAttribute('referrerpolicy', 'strict-origin-when-cross-origin');
}
if ($element->hasAttribute('data-berqWPexclude')) {
continue;
}
$class = $element->getAttribute('class');
if (!empty($class)) {
$classes = explode(' ', $class ?? '');
$classes = array_filter($classes, fn($c) => $c !== 'lazyload');
$class = trim(implode(' ', $classes));
$element->setAttribute('class', $class);
}
if ($element->hasAttribute('data-src')) {
$element->setAttribute('rm-src', $element->src);
$element->removeAttribute('src');
}
$outerhtml = esc_attr($element->outertext);
$element->outertext = '';
}
return (string) $dom;
}
function store_cache($buffer) {
// Define the cache directory
$cache_directory = bwp_get_cache_dir();
$url = bwp_canonicalize_page_url($this->page_url);
// Create the cache directory if it doesn't exist
if (!file_exists($cache_directory)) {
mkdir($cache_directory, 0755, true);
}
$cache = new Cache(null, bwp_get_cache_dir());
$cache->store_cache($url, $buffer);
do_action('berqwp_stored_page_cache', $this->page_slug);
global $berq_log;
$berq_log->info("Stored cache for $url from PageOptimizer class");
}
function preload_images($buffer) {
$dom = HtmlDomParser::str_get_html($buffer);
$count = 0;
$candidates = [];
foreach ($dom->find('img') as $element) {
if ($count >= 9) {
break;
}
if (!$element->hasAttribute('src') || empty($element->src)) {
continue;
}
$img_src = $element->src;
$outerhtml = $element->outertext;
$img_path = self::url_to_path($img_src);
// exclude lazy load
// if (!empty($image_excludes)) {
// foreach ($image_excludes as $exclude_kw) {
// if (strpos($outerhtml, $exclude_kw) !== false) {
// continue 2;
// }
// }
// }
if (strpos($img_src, 'data:') === 0) {
continue;
}
if (strpos($img_src, ';base64,') !== false) {
continue;
}
if (strpos($outerhtml, 'rs-lazyload') !== false) {
continue;
}
if (strpos($outerhtml, 'mfn-lazy') !== false) {
continue;
}
if (strpos($outerhtml, 'data-dbsrc=') !== false) {
continue;
}
if (strpos($outerhtml, 'data-orig-src=') !== false) {
continue;
}
if (strpos($outerhtml, 'facebook.com') !== false) {
continue;
}
$width = $element->width;
$height = $element->height;
if (!empty($img_path) && file_exists($img_path) && !$element->hasAttribute('width') && !$element->hasAttribute('height')) {
list($width, $height) = getimagesize($img_path);
}
$candidate = [
'width' => $width,
'height' => $height,
'area' => (int) $width * (int) $height,
'src' => $img_src,
];
if ($element->hasAttribute('loading')) {
$candidate['loading'] = $element->loading;
}
if ($element->hasAttribute('srcset')) {
$candidate['srcset'] = $element->srcset;
}
if ($element->hasAttribute('sizes')) {
$candidate['sizes'] = $element->sizes;
}
$candidates[] = $candidate;
$count++;
}
$buffer = (string) $dom;
if (!empty($candidates)) {
$processed = [];
// unique src
$candidates = array_filter($candidates, function ($item) use (&$processed) {
if (in_array($item['src'], $processed)) {
return false;
}
$processed[] = $item['src'];
return true;
});
usort($candidates, function ($a, $b) {
return $b['area'] <=> $a['area']; // DESC
});
$candidates = array_slice($candidates, 0, 2);
$prelaod_html = '';
foreach ($candidates as $preload_img) {
$prelaod_html .= 'early_head_html .= $preload_html;
}
return $buffer;
}
function preload_stylesheet($buffer) {
$dom = HtmlDomParser::str_get_html($buffer);
foreach ($dom->find('link') as $element) {
if ($element->rel == 'stylesheet'){
$element->setAttribute('rel', 'preload');
$element->setAttribute('as', 'style');
$element->removeAttribute('media');
// $element->setAttribute('media', 'print');
// $element->setAttribute('onload', "this.media='all'");
$element->setAttribute('onload', "this.rel='stylesheet'");
}
}
return (string) $dom;
}
function delay_styles($buffer) {
if ( !empty($this->settings['css_optimization']) && $this->settings['css_optimization'] !== 'delay' && $this->settings['css_optimization'] !== 'asynchronous' ) {
return $buffer;
}
$dom = HtmlDomParser::str_get_html($buffer);
$style_excludes = array_map(function ($kw) {
return sanitize_text_field(trim($kw));
}, $this->settings['exclude_css']);
foreach ($dom->find('link') as $element) {
$outerhtml = $element->outertext;
if ($element->rel == 'stylesheet' || $element->as == 'style'){
if (!$element->hasAttribute('href')) {
continue;
}
if ($element->hasAttribute('data-berqwp-exclude')) {
continue;
}
// exclude style
if (!empty($style_excludes)) {
foreach ($style_excludes as $exclude_kw) {
if (!empty($exclude_kw) && strpos($outerhtml, $exclude_kw) !== false) {
continue;
}
}
}
$element->setAttribute('rel', 'stylesheet');
$element->setAttribute('as', 'style');
$element->setAttribute('data-berqwp-style-href', $element->href);
$element->removeAttribute('href');
}
}
foreach ($dom->find('style') as $element) {
$outerhtml = $element->outertext;
if ($element->hasAttribute('data-berqwp-exclude')) {
continue;
}
// exclude style
if (!empty($style_excludes)) {
foreach ($style_excludes as $exclude_kw) {
if (!empty($exclude_kw) && strpos($outerhtml, $exclude_kw) !== false) {
continue;
}
}
}
$element->setAttribute('type', 'text/berqwp-style');
}
return (string) $dom;
}
function buffer_end($buffer) {
// $buffer = file_get_contents('/Users/hamzamairaj/Local Sites/plugin-berqwp/app/public/wp-content/plugins/searchpro/inc/photon/page.html');
if (empty($buffer)) {
return $buffer;
}
$buffer = $buffer.'';
$script = "
";
[ $buffer, $template_placeholders ] = $this->extract_template_scripts( $buffer );
$buffer = $this->preload_images($buffer);
// $buffer = $this->preload_stylesheet($buffer);
if ($this->settings['img_lazyloading']) {
$buffer = $this->lazy_load_images($buffer);
}
if ($this->settings['js_optimization'] == 'auto') {
if ($this->settings['opt_mode'] == 'basic') {
$this->settings['js_optimization'] = 'defer';
}
if ($this->settings['opt_mode'] == 'medium') {
$this->settings['js_optimization'] = 'asynchronous';
}
if ($this->settings['opt_mode'] == 'blaze') {
$this->settings['js_optimization'] = 'delay';
}
if ($this->settings['opt_mode'] == 'aggressive') {
$this->settings['js_optimization'] = 'delay';
}
}
if ($this->settings['js_optimization'] !== 'disable') {
$buffer = $this->optimize_js($buffer);
}
if ($this->settings['lazy_load_videos']) {
$buffer = $this->lazy_load_videos($buffer);
}
if ($this->settings['youtube_lazyloading']) {
// $buffer = $this->lazy_load_iframes($buffer);
}
if ($this->settings['css_optimization'] == 'auto') {
if ($this->settings['opt_mode'] == 'basic') {
$this->settings['css_optimization'] = 'disable';
}
if ($this->settings['opt_mode'] == 'medium') {
$this->settings['css_optimization'] = 'asynchronous';
}
if ($this->settings['opt_mode'] == 'blaze') {
$this->settings['css_optimization'] = 'asynchronous';
}
if ($this->settings['opt_mode'] == 'aggressive') {
$this->settings['css_optimization'] = 'delay';
}
}
$enable_used_css = (bool) apply_filters(
'berqwp_local_used_css',
apply_filters('berqwp_local_critical_css', (bool) get_option('berqwp_enable_used_css'))
);
// $enable_used_css = false; // disable
if ($enable_used_css && $this->settings['css_optimization'] !== 'disable') {
$critical_css = new berqUsedCSS(get_option('home'));
$critical_css->forceInclude($this->settings['force_include_critical_css']);
$critical_css = $critical_css->process_css($buffer);
$critical_css = sprintf('', $critical_css);
/* $buffer = berqwp_prependHtmlToHead($buffer, $critical_css); */
$this->early_head_html .= $critical_css;
$buffer = $this->delay_styles($buffer);
}
$buffer = berqwp_earlyHeadHtml($buffer, $this->early_head_html);
$buffer = $this->restore_template_scripts( $buffer, $template_placeholders );
$script = apply_filters('berqwp_photon_before_closing_body', $script);
$buffer = berqwp_appendHtmlToBody($buffer, $script);
$buffer = apply_filters( 'berqwp_cache_buffer', $buffer );
$this->store_cache($buffer);
return $buffer;
}
}