Source

File: wp-admin/includes/class-wp-privacy-policy-content.php

public static function get_suggested_policy_text() {
		$policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' );
		$checked        = array();
		$time           = time();
		$update_cache   = false;
		$new            = self::$policy_content;
		$old            = array();

		if ( $policy_page_id ) {
			$old = (array) get_post_meta( $policy_page_id, '_wp_suggested_privacy_policy_content' );
		}

		// Check for no-changes and updates.
		foreach ( $new as $new_key => $new_data ) {
			foreach ( $old as $old_key => $old_data ) {
				$found = false;

				if ( $new_data['policy_text'] === $old_data['policy_text'] ) {
					// Use the new plugin name in case it was changed, translated, etc.
					if ( $old_data['plugin_name'] !== $new_data['plugin_name'] ) {
						$old_data['plugin_name'] = $new_data['plugin_name'];
						$update_cache            = true;
					}

					// A plugin was re-activated.
					if ( ! empty( $old_data['removed'] ) ) {
						unset( $old_data['removed'] );
						$old_data['added'] = $time;
						$update_cache      = true;
					}

					$checked[] = $old_data;
					$found     = true;
				} elseif ( $new_data['plugin_name'] === $old_data['plugin_name'] ) {
					// The info for the policy was updated.
					$checked[]    = array(
						'plugin_name' => $new_data['plugin_name'],
						'policy_text' => $new_data['policy_text'],
						'updated'     => $time,
					);
					$found        = true;
					$update_cache = true;
				}

				if ( $found ) {
					unset( $new[ $new_key ], $old[ $old_key ] );
					continue 2;
				}
			}
		}

		if ( ! empty( $new ) ) {
			// A plugin was activated.
			foreach ( $new as $new_data ) {
				if ( ! empty( $new_data['plugin_name'] ) && ! empty( $new_data['policy_text'] ) ) {
					$new_data['added'] = $time;
					$checked[]         = $new_data;
				}
			}
			$update_cache = true;
		}

		if ( ! empty( $old ) ) {
			// A plugin was deactivated.
			foreach ( $old as $old_data ) {
				if ( ! empty( $old_data['plugin_name'] ) && ! empty( $old_data['policy_text'] ) ) {
					$data = array(
						'plugin_name' => $old_data['plugin_name'],
						'policy_text' => $old_data['policy_text'],
						'removed'     => $time,
					);

					$checked[] = $data;
				}
			}
			$update_cache = true;
		}

		if ( $update_cache && $policy_page_id ) {
			delete_post_meta( $policy_page_id, '_wp_suggested_privacy_policy_content' );
			// Update the cache.
			foreach ( $checked as $data ) {
				add_post_meta( $policy_page_id, '_wp_suggested_privacy_policy_content', $data );
			}
		}

		return $checked;
	}