Description:
------------
values, which I got from db via odbc <> values, which I make by $a=blablablaNumber;

Reproduce code:
---------------
function getid($table,$field,$value){   global $dbcon;
  $sql="select id from $table where $field='$value'";
  if($result=odbc_exec($dbcon,$sql)){
    if (odbc_fetch_into($result,$ware)) {
      if($ware[0]){
        odbc_free_result($result);
        return $ware[0];
      } else {
        odbc_free_result($result);
        return false;
      }
    }
  }
}
$cid=getid('yaol_currencies','currencynick','usd'); //via odbc from db2 it gets id (smallint) from table yaol_currencies
echo $cid; //return -32766
$a=-32766;
$b[$cid]='ddd';
if ($b[$a]=='ddd') {echo 'gut';}


Expected result:
----------------
string 'gut' not posted on output

but if I add line
$cid+=0;
then string 'gut' will posted on output

Actual result:
--------------
I think $b[$a] must be equalent $b[$cid] because $a=-32766 and $cid=-32766 but the last came from odbc.