Ubuntu

'method_name') * * array('hook_name' => array('method_name', $priority)) * * array('hook_name' => array('method_name', $priority, $accepted_args)) * * array('hook_name' => array(array('method_name_1', $priority_1, $accepted_args_1)), array('method_name_2', $priority_2, $accepted_args_2))) * * @return array */ public static function get_subscribed_events() { return [ 'rocket_buffer' => [ 'insert_rocket_head', 100000 ], 'rocket_head' => 'print_head_elements', ]; } /** * Print all head elements. * * @param string $content Head elements HTML. * @return string */ public function print_head_elements( $content ) { /** * Filter Head elements array. * * @param array $head_items Elements to be added to head after closing of title tag. * * Priority 10: preconnect * Priority 30: preload * Priority 50: styles * @returns array */ $items = wpm_apply_filters_typed( 'array', 'rocket_head_items', [] ); if ( empty( $items ) ) { return $content; } $this->head_items = []; // Combine elements. $elements = ''; foreach ( $items as $item ) { // Make sure that we don't have duplication based on `href` inside each `rel`. if ( $this->is_duplicate( $item ) ) { continue; } $elements .= "\n" . $this->prepare_element( $item ); } return $content . $elements; } /** * Check if the item is duplicate. * * @param array $item Item to check. * @return bool */ private function is_duplicate( $item ) { if ( empty( $item['rel'] ) || empty( $item['href'] ) ) { return false; } if ( ! isset( $this->head_items[ $item['rel'] ] ) ) { $this->head_items[ $item['rel'] ] = []; } if ( ! isset( $this->head_items[ $item['rel'] ][ $item['href'] ] ) ) { $this->head_items[ $item['rel'] ][ $item['href'] ] = true; return false; } return true; } /** * Prepare element HTML from the item array. * * @param array $element Item element. * @return string */ private function prepare_element( $element ) { $open_tag = ''; if ( ! empty( $element['open_tag'] ) ) { $open_tag = $element['open_tag']; unset( $element['open_tag'] ); } $close_tag = ''; if ( ! empty( $element['close_tag'] ) ) { $close_tag = $element['close_tag']; unset( $element['close_tag'] ); } $inner_content = ''; if ( ! empty( $element['inner_content'] ) ) { $inner_content = $element['inner_content']; unset( $element['inner_content'] ); } $attributes = []; ksort( $element, SORT_NATURAL ); foreach ( $element as $key => $value ) { if ( is_int( $key ) ) { $attributes[] = $value; continue; } $attributes[] = $key . '="' . $this->esc_attribute( $key, $value ) . '"'; } $attributes_html = ! empty( $attributes ) ? ' ' . implode( ' ', $attributes ) : ''; return $open_tag . $attributes_html . '>' . $inner_content . $close_tag; } /** * Insert rocket_head into the buffer HTML * * @param string $html Buffer HTML. * @return string */ public function insert_rocket_head( $html ) { if ( empty( $html ) ) { return $html; } $filtered_buffer = preg_replace( '##iU', '' . wpm_apply_filters_typed( 'string', 'rocket_head', '' ), $html, 1 ); if ( empty( $filtered_buffer ) ) { return $html; } return $filtered_buffer; } /** * Escape attribute value before printing it. * * @param string $attribute_name Attribute name. * @param string $attribute_value Attribute value. * @return string */ private function esc_attribute( $attribute_name, $attribute_value ) { if ( 'data-wpr-hosted-gf-parameters' === $attribute_name ) { return $attribute_value; } return esc_attr( $attribute_value ); } }