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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Internal
*/
/**
* This class handles storing the current options for future reference.
*
* This should only be used during an upgrade routine.
*/
class WPSEO_Upgrade_History {
/**
* Option to use to store/retrieve data from.
*
* @var string
*/
protected $option_name = 'wpseo_upgrade_history';
/**
* WPSEO_Upgrade_History constructor.
*
* @param null|string $option_name Optional. Custom option to use to store/retrieve history from.
*/
public function __construct( $option_name = null ) {
if ( $option_name !== null ) {
$this->option_name = $option_name;
}
}
/**
* Retrieves the content of the history items currently stored.
*
* @return array The contents of the history option.
*/
public function get() {
$data = get_option( $this->get_option_name(), [] );
if ( ! is_array( $data ) ) {
return [];
}
return $data;
}
/**
* Adds a new history entry in the storage.
*
* @param string $old_version The version we are upgrading from.
* @param string $new_version The version we are upgrading to.
* @param array $option_names The options that need to be stored.
*/
public function add( $old_version, $new_version, array $option_names ) {
$option_data = [];
if ( $option_names !== [] ) {
$option_data = $this->get_options_data( $option_names );
}
// Retrieve current history.
$data = $this->get();
// Add new entry.
$data[ time() ] = [
'options' => $option_data,
'old_version' => $old_version,
'new_version' => $new_version,
];
// Store the data.
$this->set( $data );
}
/**
* Retrieves the data for the specified option names from the database.
*
* @param array $option_names The option names to retrieve.
*
* @return array
*/
protected function get_options_data( array $option_names ) {
$wpdb = $this->get_wpdb();
$sql = $wpdb->prepare(
'
SELECT option_value, option_name FROM ' . $wpdb->options . ' WHERE
option_name IN ( ' . implode( ',', array_fill( 0, count( $option_names ), '%s' ) ) . ' )
',
$option_names
);
$results = $wpdb->get_results( $sql, ARRAY_A );
$data = [];
foreach ( $results as $result ) {
$data[ $result['option_name'] ] = maybe_unserialize( $result['option_value'] );
}
return $data;
}
/**
* Stores the new history state.
*
* @param array $data The data to store.
*
* @return void
*/
protected function set( array $data ) {
// This should not be autoloaded!
update_option( $this->get_option_name(), $data, false );
}
/**
* Retrieves the WPDB object.
*
* @return wpdb The WPDB object to use.
*/
protected function get_wpdb() {
global $wpdb;
return $wpdb;
}
/**
* Retrieves the option name to store the history in.
*
* @return string The option name to store the history in.
*/
protected function get_option_name() {
return $this->option_name;
}
}