PHP foreach insert array

Question

I have an array of arrays, and I am trying to foreach loop through and insert new item into the sub arrays.

take a look below

            $newarray = array(
                    array("id"=>1,"quantity"=>2),
                    array("id"=>1,"quantity"=>2),
                    array("id"=>1,"quantity"=>2),
           );

           foreach($newarray as $item){
                $item["total"] = 9;
            }
           echo "<br>";
           print_r($newarray);

The result just give me the original array without the new "total". Why ?

stackoverflow.com/questions/16491704/…

sumit
– sumit

2017-02-19 20:18:32 +00:00
Commented Feb 19, 2017 at 20:18 — sumit
– sumit, Commented Feb 19, 2017 at 20:18

Eduardo Escobar · Accepted Answer · 2017-02-19 20:02:49Z

3

Because $item is not a reference of $newarray[$loop_index]:

foreach($newarray as $loop_index => $item){
    $newarray[$loop_index]["total"] = 9;
}

edited Feb 19, 2017 at 20:02

answered Feb 19, 2017 at 19:59

Eduardo Escobar

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1 Comment

codenoob Over a year ago

I think this is the right answer. Will accept it after 10 minute timer.

Jaquarh · Accepted Answer · 2017-02-19 20:01:14Z

1

The foreach() statement gives $item as an array: Not as the real value (consuming array). That meaning it can be read but not changed unless you then overwrite the consuming array.

You could use the for() and loop through like this: see demo.

Note: This goes all the way back to scopes, you should look into that.

answered Feb 19, 2017 at 20:01

Jaquarh

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