在php中填充数组时索引出错

Question

The first step is to create an new array with zeros. This is the code:

$amounts = [];
    $row = [];
    for($a = 0; $a < count($receipts_with_total); $a++){
        for($b = 0; $b < count($taxes); $b++){
            $row[$b] = 0;               
        }
        $amounts[] = $row;
    }    

Then, i proceede to fill the array with values. The problem is, for some reason i don't know, it adds some indexs. The code to fill the array is the next one:

//We calculate all the taxes amounts        
    for($i = 0; $i < count($receipts_with_total); $i++){
        $this_receipt = $receipts_with_total[$i];
        //We get all the taxes for each receipt
        $taxes = $this_receipt->taxes;
        for($j = 0; $j < count($taxes); $j++){
            $this_tax = $taxes[$j];             

            if($this_tax->name == "IVA 21%"){
                $amounts[$i][$j] = round((($this_tax->value * $total[$i]) / 100), 2);
            }
            elseif($this_tax->name == "IVA 10.5%"){
                $amounts[$i][$j+1] = round((($this_tax->value * $total[$i]) / 100), 2);
            }
            else {
                $amounts[$i][$j+2] = round((($this_tax->value * $total[$i]) / 100), 2); 
            }           
        }
    }    

And the outputs are:

Creacion

Array ( [0] => Array ( [0] => 0 [1] => 0 [2] => 0 ) [1] => Array ( [0] => 0 [1] => 0 [2] => 0 ) [2] => Array ( [0] => 0 [1] => 0 [2] => 0 ) [3] => Array ( [0] => 0 [1] => 0 [2] => 0 ) )

Modelo

Array ( [0] => Array ( [0] => 0 [1] => 257.46 [2] => 61.3 ) [1] => Array ( [0] => 0 [1] => 40.36 [2] => 9.61 ) [2] => Array ( [0] => 80.73 [1] => 40.36 [2] => 9.61 ) [3] => Array ( [0] => 211.05 [1] => 105.53 [2] => 0 ) )

Lleno

Array ( [0] => Array ( [0] => 0 [1] => 257.46 [2] => 0 [3] => 61.3 ) [1] => Array ( [0] => 0 [1] => 40.37 [2] => 0 [3] => 9.61 ) [2] => Array ( [0] => 80.73 [1] => 0 [2] => 40.37 [4] => 9.61 ) [3] => Array ( [0] => 211.05 [1] => 0 [2] => 105.53 ) )

The first output is the new array with zeros. The second one is an example of as should be the final array with the calculate numbers. The last one is the array really i get. As you can see, the index in bold represent the errors. For example, the value "61.3" is in fourth position in the first array, instead of third, it would be the correct.

Thanks!

Answer 1

Remove the +1 and +2 from the code. Just

$amounts[$i][$j]=...

in all cases.

Because if i.e.

$j=2;

it may be become 3 in your code $j+1

My answer just pick that part of your question:

The problem is, for some reason i don't know, it adds some indexs.