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<?php

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namespace Yoast\WP\SEO\Presenters;

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use WPSEO_Utils;

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/**

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* Presenter class for the schema object.

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class Schema_Presenter extends Abstract_Indexable_Presenter {

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/**

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* The tag key name.

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* @var string

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protected $key = 'schema';

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/**

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* Returns the schema output.

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* @return string The schema tag.

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public function present() {

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$deprecated_data = [

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'_deprecated' => 'Please use the "wpseo_schema_*" filters to extend the Yoast SEO schema data - see the WPSEO_Schema class.',

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];

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/**

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* Filter: 'wpseo_json_ld_output' - Allows disabling Yoast's schema output entirely.

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* @param mixed $deprecated If false or an empty array is returned, disable our output.

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* @param string $empty

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$return = \apply_filters( 'wpseo_json_ld_output', $deprecated_data, '' );

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if ( $return === [] || $return === false ) {

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return '';

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}

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/**

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* Action: 'wpseo_json_ld' - Output Schema before the main schema from Yoast SEO is output.

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\do_action( 'wpseo_json_ld' );

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$schema = $this->get();

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if ( \is_array( $schema ) ) {

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$output = WPSEO_Utils::format_json_encode( $schema );

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$output = \str_replace( "\n", \PHP_EOL . "\t", $output );

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return '<script type="application/ld+json" class="yoast-schema-graph">' . $output . '</script>';

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}

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return '';

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}

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/**

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* Gets the raw value of a presentation.

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* @return array The raw value.

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public function get() {

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return $this->presentation->schema;

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}

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}

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