Symfony 3.4: get value and sum Variable variable array values

Question

Forgive the word game.

I have to cycle an array and sum the values, then multiply for the price (i already know how to do that).

The object is composed of 64 fields called val1, val2, val3 etc .. each field has a simple_array with the value of the quantity.

I get these data from the database using doctrine.

    $item = $this->getDoctrine()->getRepository(ExpertationsAdvanced::class)->findBy(['father' => $id]);

    dump($item[0]->getVal1());

        for($i = 1; $i < 64; $i++) {
            dump(${'$item[0]->getVal' . $i . '()'});
            $i++;
            if(${'$item[0]->getVal' . $i . '()'} == null) {
                $return = '0';
            } else {
                $return = array_sum(${'$item[0]->getVal' . $i . '()'} );
            }

            dump($return);
        }

the first dump return the array i'm requesting for, with no problems, but in the forloop, i get erro Notice: Undefined variable: $item[0]->getVal1().

I think I'm using the wrong logic but maybe worked so mutch time and can't see a way.

Have u done search before asking?

sklwebdev
– sklwebdev

2018-10-23 17:30:37 +00:00
Commented Oct 23, 2018 at 17:30 — sklwebdev
– sklwebdev, Commented Oct 23, 2018 at 17:30

sklwebdev · Accepted Answer · 2018-10-23 17:29:41Z

0

First of all if you have 64 fields, you should have(read docs for more info):

for($i = 1; $i <= 64; $i++) {

Secondary, you don't need to increment $i inside of loop

$i++;

To get the value:

$item[0]->{"getVal{$i}"}();
// OR
$method = "getVal{$i}";
$item[0]->$method();

Result will be:

for($i = 1; $i <= 64; $i++) {
    $array = $item[0]->{"getVal{$i}"}();

    $return = is_array($array) ? array_sum($array) : 0;
    dump($return);
}

answered Oct 23, 2018 at 17:29

sklwebdev

2812 silver badges9 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

revengeance Over a year ago

He will overwrite the return in every iteration and in the end return only for the last field, I think this is not what he wants. Probably he wants to use foreach loop and declare variable before loop and then add to it inside loop :).

sklwebdev Over a year ago

May be, but based on description he knows how to do that : I have to cycle an array and sum the values, then multiply for the price (i already know how to do that).

Collectives™ on Stack Overflow

Symfony 3.4: get value and sum Variable variable array values

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related