Yii2 trait for caching table schema in memory, speeds up creating object significantly

CachedSchemaTrait.php

<?php

/**
 * Use this in ActiveRecord models to speed up creating objects 10x times
 */
trait CachedSchemaTrait
{
    public static function getTableSchema()
    {
        static $cache;

        if ($cache === null) {
            $cache = parent::getTableSchema();
        }

        return $cache;
    }
}