Shaun

The problem is that you've assigned $test_array[] = array();

This means that the first element ($test_array[0]) is an array.

You're then trying to add $i to it, as in $test_array[$i] = $test_array[$i] + 1;

in terms of types what you're doing is array = array + integer

Which doesn't make any sense.

If you change the first line to $test_array = array();

Then the individual elements will all be NULL, which evaluates to 0 in an integer context, and you will get the result you expect.

Hope this helps

Cheers

Chris

Shaun wrote:

Hi,

I have been trying for the past two hours to understand why I get an error with the following code:

<?php
 $test_array[] = array();
 $i = 0;
 while($i < 7){
  $test_array[$i] += $i;
  echo '$day_total[$i] = '.$day_total[$i].'<br>';
 }
?>

Fatal error: Unsupported operand types in /usr/home/expensesystem/public_html/test.php on line 5

I am trying to create a loop where $i is added to array element $i, and can't find any information relating to this on google or php.net...

Thanks for your advice.


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