1public function quoteInto($text, $value, $type = null, $count = null)
2{
3    if (is_array($value)) {
4        foreach($value as &$val) {
5            $val = $this->castNumeric($val);
6        }
7    } else {
8        $value = $this->castNumeric($value);
9    }
10 
11    if (is_array($value) && empty($value)) {
12        $value = new \Zend_Db_Expr('NULL');
13    }
14 
15    if ($value instanceof \DateTimeInterface) {
16        $value = $value->format('Y-m-d H:i:s');
17    }
18 
19    return parent::quoteInto($text, $value, $type, $count);
20}
21 
22private function castNumeric($val)
23{
24    if (is_numeric($val)) {
25        return $val + 0;
26    }
27    return $val;
28}