<h2>File Contents: /home/planet5/www/wp-content/plugins/wordpress-seo/admin/class-admin-recommended-replace-vars.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/wp-content/plugins/wordpress-seo/admin/class-admin-recommended-replace-vars.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Admin
 */

/**
 * Determines the recommended replacement variables based on the context.
 */
class WPSEO_Admin_Recommended_Replace_Vars {

	/**
	 * The recommended replacement variables.
	 *
	 * @var array
	 */
	protected $recommended_replace_vars = [
		// Posts types.
		&#039;page&#039;                     =&gt; [ &#039;sitename&#039;, &#039;title&#039;, &#039;sep&#039;, &#039;primary_category&#039; ],
		&#039;post&#039;                     =&gt; [ &#039;sitename&#039;, &#039;title&#039;, &#039;sep&#039;, &#039;primary_category&#039; ],
		// Homepage.
		&#039;homepage&#039;                 =&gt; [ &#039;sitename&#039;, &#039;sitedesc&#039;, &#039;sep&#039; ],
		// Custom post type.
		&#039;custom_post_type&#039;         =&gt; [ &#039;sitename&#039;, &#039;title&#039;, &#039;sep&#039; ],

		// Taxonomies.
		&#039;category&#039;                 =&gt; [ &#039;sitename&#039;, &#039;term_title&#039;, &#039;sep&#039;, &#039;term_hierarchy&#039; ],
		&#039;post_tag&#039;                 =&gt; [ &#039;sitename&#039;, &#039;term_title&#039;, &#039;sep&#039; ],
		&#039;post_format&#039;              =&gt; [ &#039;sitename&#039;, &#039;term_title&#039;, &#039;sep&#039;, &#039;page&#039; ],

		// Custom taxonomy.
		&#039;term-in-custom-taxonomy&#039;  =&gt; [ &#039;sitename&#039;, &#039;term_title&#039;, &#039;sep&#039;, &#039;term_hierarchy&#039; ],

		// Settings - archive pages.
		&#039;author_archive&#039;           =&gt; [ &#039;sitename&#039;, &#039;title&#039;, &#039;sep&#039;, &#039;page&#039; ],
		&#039;date_archive&#039;             =&gt; [ &#039;sitename&#039;, &#039;sep&#039;, &#039;date&#039;, &#039;page&#039; ],
		&#039;custom-post-type_archive&#039; =&gt; [ &#039;sitename&#039;, &#039;title&#039;, &#039;sep&#039;, &#039;page&#039; ],

		// Settings - special pages.
		&#039;search&#039;                   =&gt; [ &#039;sitename&#039;, &#039;searchphrase&#039;, &#039;sep&#039;, &#039;page&#039; ],
		&#039;404&#039;                      =&gt; [ &#039;sitename&#039;, &#039;sep&#039; ],
	];

	/**
	 * Determines the page type of the current term.
	 *
	 * @param string $taxonomy The taxonomy name.
	 *
	 * @return string The page type.
	 */
	public function determine_for_term( $taxonomy ) {
		$recommended_replace_vars = $this-&gt;get_recommended_replacevars();
		if ( array_key_exists( $taxonomy, $recommended_replace_vars ) ) {
			return $taxonomy;
		}

		return &#039;term-in-custom-taxonomy&#039;;
	}

	/**
	 * Determines the page type of the current post.
	 *
	 * @param WP_Post $post A WordPress post instance.
	 *
	 * @return string The page type.
	 */
	public function determine_for_post( $post ) {
		if ( $post instanceof WP_Post === false ) {
			return &#039;post&#039;;
		}

		if ( $post-&gt;post_type === &#039;page&#039; &amp;&amp; $this-&gt;is_homepage( $post ) ) {
			return &#039;homepage&#039;;
		}

		$recommended_replace_vars = $this-&gt;get_recommended_replacevars();
		if ( array_key_exists( $post-&gt;post_type, $recommended_replace_vars ) ) {
			return $post-&gt;post_type;
		}

		return &#039;custom_post_type&#039;;
	}

	/**
	 * Determines the page type for a post type.
	 *
	 * @param string $post_type The name of the post_type.
	 * @param string $fallback  The page type to fall back to.
	 *
	 * @return string The page type.
	 */
	public function determine_for_post_type( $post_type, $fallback = &#039;custom_post_type&#039; ) {
		$page_type                   = $post_type;
		$recommended_replace_vars    = $this-&gt;get_recommended_replacevars();
		$has_recommended_replacevars = $this-&gt;has_recommended_replace_vars( $recommended_replace_vars, $page_type );

		if ( ! $has_recommended_replacevars ) {
			return $fallback;
		}

		return $page_type;
	}

	/**
	 * Determines the page type for an archive page.
	 *
	 * @param string $name     The name of the archive.
	 * @param string $fallback The page type to fall back to.
	 *
	 * @return string The page type.
	 */
	public function determine_for_archive( $name, $fallback = &#039;custom-post-type_archive&#039; ) {
		$page_type                   = $name . &#039;_archive&#039;;
		$recommended_replace_vars    = $this-&gt;get_recommended_replacevars();
		$has_recommended_replacevars = $this-&gt;has_recommended_replace_vars( $recommended_replace_vars, $page_type );

		if ( ! $has_recommended_replacevars ) {
			return $fallback;
		}

		return $page_type;
	}

	/**
	 * Retrieves the recommended replacement variables for the given page type.
	 *
	 * @param string $page_type The page type.
	 *
	 * @return array The recommended replacement variables.
	 */
	public function get_recommended_replacevars_for( $page_type ) {
		$recommended_replace_vars     = $this-&gt;get_recommended_replacevars();
		$has_recommended_replace_vars = $this-&gt;has_recommended_replace_vars( $recommended_replace_vars, $page_type );

		if ( ! $has_recommended_replace_vars ) {
			return [];
		}

		return $recommended_replace_vars[ $page_type ];
	}

	/**
	 * Retrieves the recommended replacement variables.
	 *
	 * @return array The recommended replacement variables.
	 */
	public function get_recommended_replacevars() {
		/**
		 * Filter: Adds the possibility to add extra recommended replacement variables.
		 *
		 * @param array $additional_replace_vars Empty array to add the replacevars to.
		 */
		$recommended_replace_vars = apply_filters( &#039;wpseo_recommended_replace_vars&#039;, $this-&gt;recommended_replace_vars );

		if ( ! is_array( $recommended_replace_vars ) ) {
			return $this-&gt;recommended_replace_vars;
		}

		return $recommended_replace_vars;
	}

	/**
	 * Returns whether the given page type has recommended replace vars.
	 *
	 * @param array  $recommended_replace_vars The recommended replace vars
	 *                                         to check in.
	 * @param string $page_type                The page type to check.
	 *
	 * @return bool True if there are associated recommended replace vars.
	 */
	private function has_recommended_replace_vars( $recommended_replace_vars, $page_type ) {
		if ( ! isset( $recommended_replace_vars[ $page_type ] ) ) {
			return false;
		}

		if ( ! is_array( $recommended_replace_vars[ $page_type ] ) ) {
			return false;
		}

		return true;
	}

	/**
	 * Determines whether or not a post is the homepage.
	 *
	 * @param WP_Post $post The WordPress global post object.
	 *
	 * @return bool True if the given post is the homepage.
	 */
	private function is_homepage( $post ) {
		if ( $post instanceof WP_Post === false ) {
			return false;
		}

		/*
		 * The page on front returns a string with normal WordPress interaction, while the post ID is an int.
		 * This way we make sure we always compare strings.
		 */
		$post_id       = (int) $post-&gt;ID;
		$page_on_front = (int) get_option( &#039;page_on_front&#039; );

		return get_option( &#039;show_on_front&#039; ) === &#039;page&#039; &amp;&amp; $page_on_front === $post_id;
	}
}
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