yii\db\Command::getRawSql PHP 메소드

    public function getRawSql()
    {
        if (empty($this->params)) {
            return $this->_sql;
        }
        $params = [];
        foreach ($this->params as $name => $value) {
            if (is_string($name) && strncmp(':', $name, 1)) {
                $name = ':' . $name;
            }
            if (is_string($value)) {
                $params[$name] = $this->db->quoteValue($value);
            } elseif (is_bool($value)) {
                $params[$name] = $value ? 'TRUE' : 'FALSE';
            } elseif ($value === null) {
                $params[$name] = 'NULL';
            } elseif (!is_object($value) && !is_resource($value)) {
                $params[$name] = $value;
            }
        }
        if (!isset($params[1])) {
            return strtr($this->_sql, $params);
        }
        $sql = '';
        foreach (explode('?', $this->_sql) as $i => $part) {
            $sql .= (isset($params[$i]) ? $params[$i] : '') . $part;
        }
        return $sql;
    }

 /**
  * Extended functional: caching rawSql data between queryInternal() calls for one query execution
  * @inheritdoc
  */
 public function getRawSql()
 {
     if ($rawSql = static::$requestLocalCache->get('rawSql')) {
         static::$requestLocalCache->delete('rawSql');
         return $rawSql;
     }
     return parent::getRawSql();
 }