How to access object of numeric indexed array in php

This question already has an answer here:

How to access object properties with names like integers? 6 answers

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There is no way to implement like $k->0 or $k->'0' as you expected.

PHP arrays can contain integer and string keys at the same time as PHP does not distinguish between indexed and associative arrays. The key can either be an integer or a string. The value can be of any type. php array manual Take this interesting example,

<?php
$array = array(
    1    => "a",
    "1"  => "b",
    1.5  => "c",
    true => "d",
);
var_dump($array);
?>

will output:

array(1) {
  [1]=>
  string(1) "d"
}

In your code, with this assign:

$cars['p'] = "Volvo";
$cars['q'] = "BMW";
$cars['r'] = "Toyota"; 
$cars['0'] = "Volvo";
$cars['1'] = "BMW";
$cars['2'] = "Toyota"

cars will be:

array(6) {
  ["p"]=>
  string(5) "Volvo"
  ["q"]=>
  string(3) "BMW"
  ["r"]=>
  string(6) "Toyota"
  [0]=>
  string(5) "Volvo"
  [1]=>
  string(3) "BMW"
  [2]=>
  string(6) "Toyota"
}

and object k will be:

object(stdClass)#2 (6) {
  ["p"]=>
  string(5) "Volvo"
  ["q"]=>
  string(3) "BMW"
  ["r"]=>
  string(6) "Toyota"
  [0]=>
  string(5) "Volvo"
  [1]=>
  string(3) "BMW"
  [2]=>
  string(6) "Toyota"
}

---

Use foreach() loop like:

foreach($cars as $car)
{
    echo $car;
}

where $cars in an object.

foreach() reference

---

The foreach loop works only on arrays, and is used to loop through each key/value pair in an array.

$cars['0'] = "Volvo";
$cars['1'] = "BMW";
$cars['2'] = "Toyota"; 

$k=(object)$cars;
foreach($k as $key) {
    echo $key;
}

OR

$cars['0'] = "Volvo";
$cars['1'] = "BMW";
$cars['2'] = "Toyota"; 

foreach($cars as $key) {
    echo $key;
}

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