Add two array variables

Question

I am needing to get the sum value of two array variables.

Here's my code:

for($i=0;$i<sizeof($check);$i++){   
 for($j=0;$j<sizeof($item_rec);$j++){
  for($k=0;$k<sizeof($last_item_rec);$k++){ 

   //TOTAL_VAR = $item_rec[$j] + $last_item_rec[$k];

   $query=mysqli_query($con,"UPDATE tblstock 
                            SET              
                               rec_qty='{{SUM VALUE HERE}}'
                            WHERE id = '$check[$i]'")
                      or die(mysqli_error($con));       
  } 
 }              
}//end for loop

As you can see in the comment, I don't know what variable will I declare to sum each array value of variable $item_rec and $last_item_rec.

You can declare the variable with $ on the start like $TOTAL_VAR and cast the array value like $TOTAL_VAR = (int)$item_rec[$i] + (int)$last_item_rec[$i] or you can use float if the value is decimal. — Roshan
– Roshan, Commented Feb 27, 2019 at 0:46
@Roshan Hi thank you roshan, But I need to declare the TOTAL_VAR as array, because it will only output the last sum of $item_rec[$i] and $last_item_rec[$i] — zeus2026
– zeus2026, Commented Feb 27, 2019 at 1:40

Silvio Delgado · Accepted Answer · 2019-02-27 00:47:04Z

1

You cannot use $i variable in all nested for loops.

Change it to $i, $j and $k, for example.

answered Feb 27, 2019 at 0:47

Silvio Delgado

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1 Comment

zeus2026 Over a year ago

Thank you. Yes, that just only for typo error. But I will change it in actual code.

Roshan · Accepted Answer · 2019-02-27 02:10:07Z

0

Hi yes you will need to store the sum of two arrays in an array variable.

This code may help,

  for($i=0;$i<sizeof($check);$i++){   
   for($j=0;$j<sizeof($item_rec);$j++){
    for($k=0;$k<sizeof($last_item_rec);$k++){ 

       $TOTAL_VAR = array();

        $TOTAL_VAR = (int)$item_rec[$j] + (int)$last_item_rec[$k];

        $query=mysqli_query($con,"UPDATE tblstock 
                                 SET              
                                   rec_qty='$TOTAL_VAR[$i]'
                                 WHERE id = '$check[$i]'")
                           or die(mysqli_error($con));       
       } 
      }              
     }//end for loop

Let me see if you can get through this.

answered Feb 27, 2019 at 2:10

Roshan

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2 Comments

zeus2026 Over a year ago

Hi I tried it but it didnt show any output. Just a blank output.

zeus2026 Over a year ago

I try to put additional nested loop $TOTAL_VAR = array(); for($l=0;$l<sizeof($TOTAL_VAR);$l++){ $TOTAL_VAR = (int)$item_rec[$j] + (int)$last_item_rec[$k]; But it didnt sum up the value

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