I want to add some days to current date.I use following code for it.

```
$arrSearchValues=1000;

$datToDate = date('Y-m-d', strtotime("+$arrSearchValues days"));

```

Everything working perfect until the number of days exceeds 9070.Above this number am getting result date "1970-01-01'". Is there any way to overcome this problem ?please help me with example