Unable to iterate an array in a PHP foreach loop

Question

My request PHP file elaborates some Ajax POST data:

POST data

data[0][id]:359
data[0][position]:1
data[1][id]:321
data[1][position]:2
data[2][id]:354
data[2][position]:3

Request.php

if(isset($_POST['data'])) {
    if(isset($_SESSION['username']) && isset($_SESSION['password'])) {

        $verify = $loggedIn->verify();

        if($verify['username']) {
            $Profile = new Profile();
            $Profile->db = $db;
            //Call my function
            $messages = $Profile->setOrder($_POST['data']);     

        }
    }
}

Profile.php

function setOrder($post) {
    var_dump($post);

    foreach($post as $item)
    {
        return "Area ID ".$item["id"]." and person located ".$item["position"]."<br />";
    }
}

My function returns nothing and the dump of $post is as below

array(3) {
  [0]=>
  array(2) {
    ["id"]=>
    string(3) "359"
    ["position"]=>
    string(1) "1"
  }
  [1]=>
  array(2) {
    ["id"]=>
    string(3) "321"
    ["position"]=>
    string(1) "2"
  }
  [2]=>
  array(2) {
    ["id"]=>
    string(3) "354"
    ["position"]=>
    string(1) "3"
  }
}

Inside my function I can dump correctly something like var_dump($post[0]["id"]); so why my foreach loop is empty?

Try to var_dump($item); inside the loop. Maybe it will reveal something. — Peter Rakmanyi
– Peter Rakmanyi, Commented Oct 18, 2017 at 14:27
You're not actually telling your foreach() to output anything, merely return - which will assign that string to $messages = $Profile->setOrder($_POST['data']); and terminate the loop. — CD001
– CD001, Commented Oct 18, 2017 at 14:28

mega6382 · Accepted Answer · 2017-10-18 14:29:00Z

2

It is because you are using return inside loop. It will terminate the loop after first iteration. You need to do something like this.

$return = null;
foreach($data as $item)
{
    $return .= "Area ID ".$item["id"]." and person located ".$item["position"]."<br />";
}
return $return;

answered Oct 18, 2017 at 14:29

mega6382

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