Help " Warning: Illegal string offset"

[s3nzo]

Hello guys, i'm getting this error in PHP 5.4.* i've googled it seems the problem is to parse a string as an array, but with me that don't seem to be the case, i var_dumped it still can't figure it out please help, code is

static $arr;
if(is_array($var))
{
    foreach($var as $key=>$value)
    {
        $arr[$key]    = $var2->real_escape_string(htmlentities(trim($value)));//Problem line
        if(empty($arr[$key]))
            return false;
    }
} 

[arnage]

From where did $var2-> came from? It shouldn't be there.

[shushant]

is $var2 value is defined as object