Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in [...]\xlsReader\excel_reader2.php on line 347

```
What steps will reproduce the problem?
1. Trying to access a certain xls file (other files are working)
2.
3.

What is the expected output? What do you see instead?
It should just list everything on the first sheet.

Please provide any additional information below.
The code is pretty simple and works with another xls-file, so the problem
somehow lies within the xls itself, but I can't figure out what it might be:
require_once 'pricelist/xlsReader/excel_reader2.php';
$file = $_REQUEST['sheet'];
$xls = new Spreadsheet_Excel_Reader('pricelist/files/'.$file.'');
$numcol = $xls->colcount();
$numrow = $xls->rowcount();

for ($row = 0; $row <= $numrow; $row++) {
for ($col = 0; $col <= $numcol; $col++) {
echo $xls->val($row, $col);
echo ' : ';
}
echo '
';

}
```

Original issue reported on code.google.com by `MIX.Dra...@gmail.com` on 2 Apr 2009 at 10:31

Start in excel_reader2.php at line 347 and reproduce the warning with the problematic XLS file using the example script. Trace why the second argument to array_key_exists is not an array or object, then verify that the first sheet can be listed without the warning.

Written by the indexing model from the issue text.