Ticket #26521: maybe_unserialize.php

/**
 * Unserialize value only if it was serialized.
 *
 * @since 2.0.0
 *
 * @param string $original Maybe unserialized original, if is needed.
 * @return mixed Unserialized data can be any type.
 */
function maybe_unserialize( $original ) {
    $unserialized = @unserialize($original);
    return $unserialized ? $unserialized : $original;
}