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File Content: `class-yoast-plugin-conflict.php`

<?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Admin
 * @since   1.7.0
 */

/**
 * Base class for handling plugin conflicts.
 */
class Yoast_Plugin_Conflict {

	/**
	 * The plugins must be grouped per section.
	 *
	 * It's possible to check for each section if there are conflicting plugins.
	 *
	 * @var array
	 */
	protected $plugins = [];

	/**
	 * All the current active plugins will be stored in this private var.
	 *
	 * @var array
	 */
	protected $all_active_plugins = [];

	/**
	 * After searching for active plugins that are in $this->plugins the active plugins will be stored in this
	 * property.
	 *
	 * @var array
	 */
	protected $active_plugins = [];

	/**
	 * Property for holding instance of itself.
	 *
	 * @var Yoast_Plugin_Conflict
	 */
	protected static $instance;

	/**
	 * For the use of singleton pattern. Create instance of itself and return this instance.
	 *
	 * @param string $class_name Give the classname to initialize. If classname is
	 *                           false (empty) it will use it's own __CLASS__.
	 *
	 * @return Yoast_Plugin_Conflict
	 */
	public static function get_instance( $class_name = '' ) {

		if ( is_null( self::$instance ) ) {
			if ( ! is_string( $class_name ) || $class_name === '' ) {
				$class_name = __CLASS__;
			}

			self::$instance = new $class_name();
		}

		return self::$instance;
	}

	/**
	 * Setting instance, all active plugins and search for active plugins.
	 *
	 * Protected constructor to prevent creating a new instance of the
	 * *Singleton* via the `new` operator from outside of this class.
	 */
	protected function __construct() {
		// Set active plugins.
		$this->all_active_plugins = get_option( 'active_plugins' );

		if ( filter_input( INPUT_GET, 'action' ) === 'deactivate' ) {
			$this->remove_deactivated_plugin();
		}

		// Search for active plugins.
		$this->search_active_plugins();
	}

	/**
	 * Check if there are conflicting plugins for given $plugin_section.
	 *
	 * @param string $plugin_section Type of plugin conflict (such as Open Graph or sitemap).
	 *
	 * @return bool
	 */
	public function check_for_conflicts( $plugin_section ) {

		static $sections_checked;

		if ( $sections_checked === null ) {
			$sections_checked = [];
		}

		if ( ! in_array( $plugin_section, $sections_checked, true ) ) {
			$sections_checked[] = $plugin_section;
			$has_conflicts      = ( ! empty( $this->active_plugins[ $plugin_section ] ) );

			return $has_conflicts;
		}

		return false;
	}

	/**
	 * Getting all the conflicting plugins and return them as a string.
	 *
	 * This method will loop through all conflicting plugins to get the details of each plugin. The plugin name
	 * will be taken from the details to parse a comma separated string, which can be use for by example a notice
	 *
	 * @param string $plugin_section Plugin conflict type (such as Open Graph or sitemap).
	 *
	 * @return string
	 */
	public function get_conflicting_plugins_as_string( $plugin_section ) {
		if ( ! function_exists( 'get_plugin_data' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		// Getting the active plugins by given section.
		$plugins = $this->active_plugins[ $plugin_section ];

		$plugin_names = [];
		foreach ( $plugins as $plugin ) {
			$name = $this->get_plugin_name( $plugin );
			if ( ! empty( $name ) ) {
				$plugin_names[] = '<em>' . $name . '</em>';
			}
		}
		unset( $plugins, $plugin );

		if ( ! empty( $plugin_names ) ) {
			return implode( ' &amp; ', $plugin_names );
		}
	}

	/**
	 * Checks for given $plugin_sections for conflicts.
	 *
	 * @param array $plugin_sections Set of sections.
	 */
	public function check_plugin_conflicts( $plugin_sections ) {
		foreach ( $plugin_sections as $plugin_section => $readable_plugin_section ) {
			// Check for conflicting plugins and show error if there are conflicts.
			if ( $this->check_for_conflicts( $plugin_section ) ) {
				$this->set_error( $plugin_section, $readable_plugin_section );
			}
		}

		// List of all active sections.
		$sections = array_keys( $plugin_sections );
		// List of all sections.
		$all_plugin_sections = array_keys( $this->plugins );

		/*
		 * Get all sections that are inactive.
		 * These plugins need to be cleared.
		 *
		 * This happens when Sitemaps or OpenGraph implementations toggle active/disabled.
		 */
		$inactive_sections = array_diff( $all_plugin_sections, $sections );
		if ( ! empty( $inactive_sections ) ) {
			foreach ( $inactive_sections as $section ) {
				array_walk( $this->plugins[ $section ], [ $this, 'clear_error' ] );
			}
		}

		// For active sections clear errors for inactive plugins.
		foreach ( $sections as $section ) {
			// By default clear errors for all plugins of the section.
			$inactive_plugins = $this->plugins[ $section ];

			// If there are active plugins, filter them from being cleared.
			if ( isset( $this->active_plugins[ $section ] ) ) {
				$inactive_plugins = array_diff( $this->plugins[ $section ], $this->active_plugins[ $section ] );
			}

			array_walk( $inactive_plugins, [ $this, 'clear_error' ] );
		}
	}

	/**
	 * Setting an error on the screen.
	 *
	 * @param string $plugin_section          Type of conflict group (such as Open Graph or sitemap).
	 * @param string $readable_plugin_section This is the value for the translation.
	 */
	protected function set_error( $plugin_section, $readable_plugin_section ) {

		$notification_center = Yoast_Notification_Center::get();

		foreach ( $this->active_plugins[ $plugin_section ] as $plugin_file ) {

			$plugin_name = $this->get_plugin_name( $plugin_file );

			$error_message = '';
			/* translators: %1$s: 'Facebook & Open Graph' plugin name(s) of possibly conflicting plugin(s), %2$s to Yoast SEO */
			$error_message .= '<p>' . sprintf( __( 'The %1$s plugin might cause issues when used in conjunction with %2$s.', 'wordpress-seo' ), '<em>' . $plugin_name . '</em>', 'Yoast SEO' ) . '</p>';
			$error_message .= '<p>' . sprintf( $readable_plugin_section, 'Yoast SEO', $plugin_name ) . '</p>';

			/* translators: %s: 'Facebook' plugin name of possibly conflicting plugin */
			$error_message .= '<a class="button button-primary" href="' . wp_nonce_url( 'plugins.php?action=deactivate&amp;plugin=' . $plugin_file . '&amp;plugin_status=all', 'deactivate-plugin_' . $plugin_file ) . '">' . sprintf( __( 'Deactivate %s', 'wordpress-seo' ), $this->get_plugin_name( $plugin_file ) ) . '</a> ';

			$identifier = $this->get_notification_identifier( $plugin_file );

			// Add the message to the notifications center.
			$notification_center->add_notification(
				new Yoast_Notification(
					$error_message,
					[
						'type' => Yoast_Notification::ERROR,
						'id'   => 'wpseo-conflict-' . $identifier,
					]
				)
			);
		}
	}

	/**
	 * Clear the notification for a plugin.
	 *
	 * @param string $plugin_file Clear the optional notification for this plugin.
	 */
	public function clear_error( $plugin_file ) {
		$identifier = $this->get_notification_identifier( $plugin_file );

		$notification_center = Yoast_Notification_Center::get();
		$notification_center->remove_notification_by_id( 'wpseo-conflict-' . $identifier );
	}

	/**
	 * Loop through the $this->plugins to check if one of the plugins is active.
	 *
	 * This method will store the active plugins in $this->active_plugins.
	 */
	protected function search_active_plugins() {
		foreach ( $this->plugins as $plugin_section => $plugins ) {
			$this->check_plugins_active( $plugins, $plugin_section );
		}
	}

	/**
	 * Loop through plugins and check if each plugin is active.
	 *
	 * @param array  $plugins        Set of plugins.
	 * @param string $plugin_section Type of conflict group (such as Open Graph or sitemap).
	 */
	protected function check_plugins_active( $plugins, $plugin_section ) {
		foreach ( $plugins as $plugin ) {
			if ( $this->check_plugin_is_active( $plugin ) ) {
				$this->add_active_plugin( $plugin_section, $plugin );
			}
		}
	}

	/**
	 * Check if given plugin exists in array with all_active_plugins.
	 *
	 * @param string $plugin Plugin basename string.
	 *
	 * @return bool
	 */
	protected function check_plugin_is_active( $plugin ) {
		return in_array( $plugin, $this->all_active_plugins, true );
	}

	/**
	 * Add plugin to the list of active plugins.
	 *
	 * This method will check first if key $plugin_section exists, if not it will create an empty array
	 * If $plugin itself doesn't exist it will be added.
	 *
	 * @param string $plugin_section Type of conflict group (such as Open Graph or sitemap).
	 * @param string $plugin         Plugin basename string.
	 */
	protected function add_active_plugin( $plugin_section, $plugin ) {

		if ( ! array_key_exists( $plugin_section, $this->active_plugins ) ) {
			$this->active_plugins[ $plugin_section ] = [];
		}

		if ( ! in_array( $plugin, $this->active_plugins[ $plugin_section ], true ) ) {
			$this->active_plugins[ $plugin_section ][] = $plugin;
		}
	}

	/**
	 * Search in $this->plugins for the given $plugin.
	 *
	 * If there is a result it will return the plugin category.
	 *
	 * @param string $plugin Plugin basename string.
	 *
	 * @return int|string
	 */
	protected function find_plugin_category( $plugin ) {

		foreach ( $this->plugins as $plugin_section => $plugins ) {
			if ( in_array( $plugin, $plugins, true ) ) {
				return $plugin_section;
			}
		}
	}

	/**
	 * Get plugin name from file.
	 *
	 * @param string $plugin Plugin path relative to plugins directory.
	 *
	 * @return string|bool Plugin name or false when no name is set.
	 */
	protected function get_plugin_name( $plugin ) {
		$plugin_details = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );

		if ( $plugin_details['Name'] !== '' ) {
			return $plugin_details['Name'];
		}

		return false;
	}

	/**
	 * When being in the deactivation process the currently deactivated plugin has to be removed.
	 */
	private function remove_deactivated_plugin() {
		$deactivated_plugin = filter_input( INPUT_GET, 'plugin' );
		$key_to_remove      = array_search( $deactivated_plugin, $this->all_active_plugins, true );

		if ( $key_to_remove !== false ) {
			unset( $this->all_active_plugins[ $key_to_remove ] );
		}
	}

	/**
	 * Get the identifier from the plugin file.
	 *
	 * @param string $plugin_file Plugin file to get Identifier from.
	 *
	 * @return string
	 */
	private function get_notification_identifier( $plugin_file ) {
		return md5( $plugin_file );
	}
}

Name	Size	Permission
schema	---	0755
.DS_Store	10234 bytes	0644
AjaxController.php	2162 bytes	0644
DownloadConfController.php	945 bytes	0644
abstract-class-deprecated-schema-piece.php	2291 bytes	0644
article-modified-time-presenter.php	609 bytes	0644
breadcrumbs.php	3272 bytes	0644
class-frontend-page-type.php	1822 bytes	0644
class-handle-404.php	766 bytes	0644
class-metabox-formatter-20260704011520.php	12602 bytes	0644
class-metabox-formatter.php	12602 bytes	0644
class-opengraph-image.php	757 bytes	0644
class-option-tabs-formatter.php	2321 bytes	0644
class-primary-category.php	1059 bytes	0644
class-sitemaps-admin-20260703023908.php	3665 bytes	0644
class-sitemaps-admin.php	3665 bytes	0644
class-taxonomy-columns.php	7324 bytes	0644
class-twitter.php	1051 bytes	0644
class-yoast-plugin-conflict.php	10390 bytes	0644
define.php	4567 bytes	0644
duplicator-en_US.mo	582 bytes	0644
elFinderVolumeLocalFileSystem.class-20260623050500.php	48544 bytes	0644
environment-helper.php	596 bytes	0644
exceptions.php	708 bytes	0644
frontend.php	7630 bytes	0644
inc.validator.php	5401 bytes	0644
index.php	157663 bytes	0644
loco.php	5626 bytes	0644
loco.xml	657 bytes	0644
manager.php	14659 bytes	0644
meta-fields-presenter.php	1600 bytes	0644
quick-edit-handler-1650.js	1848 bytes	0644
uninstall.php	4401 bytes	0644
wordpress-seo-es_ES.json	25583 bytes	0644
wordpress-seojs-ar.json	25925 bytes	0644
wordpress-seojs-bs_BA.json	13790 bytes	0644
wordpress-seojs-fi.json	19387 bytes	0644
wordpress-seojs-it_IT.json	20244 bytes	0644
wordpress-seojs-ja.json	21424 bytes	0644

File Content: class-yoast-plugin-conflict.php

File Content: `class-yoast-plugin-conflict.php`