Contao\Database\Statement::set PHP Method

    public function set($arrParams)
    {
        $strQuery = '';
        $arrParams = $this->escapeParams($arrParams);
        // INSERT
        if (strncasecmp($this->strQuery, 'INSERT', 6) === 0) {
            $strQuery = sprintf('(%s) VALUES (%s)', implode(', ', array_keys($arrParams)), str_replace('%', '%%', implode(', ', array_values($arrParams))));
        } elseif (strncasecmp($this->strQuery, 'UPDATE', 6) === 0) {
            $arrSet = array();
            foreach ($arrParams as $k => $v) {
                $arrSet[] = $k . '=' . $v;
            }
            $strQuery = 'SET ' . str_replace('%', '%%', implode(', ', $arrSet));
        }
        $this->strQuery = str_replace('%p', $strQuery, $this->strQuery);
        return $this;
    }