Warning: Invalid argument supplied for foreach()

DJ_Steffo

What does that error message mean? And what should I alter to make it work??
This is my code...

$temparray = ksort($temparray);

echo '<table>';

foreach($temparray as $k => $v)
{
  echo '<tr>';
  echo '<td>' . $v['article'] . '</td>';
  echo '<td>' . $k . '</td>';
  echo '<td>Your product has a basic cost of ' . $v['cost'] . ' and a basic price of ' . $v['price'] . '</td>';
  echo '</tr>';
}

echo '</table>';

tsinka

Hi,

please post some more code (especially the part of the code that creates that array).

As a first step I'd suggest to change the line

$temparray = ksort($temparray);

Add two lines so that it looks like ...

print_r($temparray);
$temparray = ksort($temparray); 
print_r($temparray);

The two additional lines print the array in a human readable way.

The error message in most cases means that $temparray isn't an array.

Thomas

devinemke

your script is failing because you are feeding a boolean to foreach instead of an array. ksort returns TRUE on success and FALSE on failure.
change this:

$temparray = ksort($temparray);

to this:

ksort($temparray);

DJ_Steffo

Aah!
Using

krsort($temparray);

I got it to work, thanks. But then it is like it filters away rows that have the same value for totalcost. Why is that?

$temparray[$totalcost]['article'] = $row['article'];
     $temparray[$totalcost]['cost'] = $row['cost'];
     $temparray[$totalcost]['price'] = $row['price'];
}

krsort($temparray);
reset($temparray);

echo '<table>';
echo '<tr bgcolor="#efefef"> <td>Article</td><td>Totalcost</td><td>Comments</td></tr>';

foreach($temparray as $k => $v)
{
  echo '<tr bgcolor="#e7e7d6">';
  echo '<td><a href="   '.$v['web'].'   ">  '. $v['article'] . '</a>  </td>';
  echo '<td>'   . $k .              '  &#36</td>';
  echo '<td>Totalcost:  '. $v['cost'] .'    Cost:   '. $v['price'].'   &#36</td>';
 }

echo '</table>';

devinemke

an array must have all unique keys. if you have more than one $totalcost with the same value the newer one will overwrite the older one. you must either add another dimension to your array or use some other unique value for the keys (like perhaps the primary key field of your table).

DJ_Steffo

Alright!
I want it to sort by 'totalcost' but the primary key is 'article'
How do I keep it to be sorted on 'totalcost' with 'article' as primary??

$totalcost = ($row['cost'] + $row['price'] + ($row['procent']) * $a);
     }
     else
     {
          $totalcost = 'not calculated';
     }
     $temparray[$totalcost]['article'] = $row['article'];
     $temparray[$totalcost]['cost'] = $row['cost'];
     $temparray[$totalcost]['price'] = $row['price'];
}