Is it possible to access keys in same array - PHP?

Question

Good day, i have an array as such:

$cart = [
   'id' => 1,
   'item_name' => 'sample',
   'quantity' => 20,
   'price' => 50,
];

i tried doing this:

'total' => $cart['quantity'] * $cart['price']

i get an undefined index error.

Is there any way to achieve this.

Note: the 'total' key is in the same array $cart.

You first need to define the array before you can access it. So define it first and after it you can add your total element — Rizier123
– Rizier123, Commented Feb 6, 2017 at 15:00

beta-developper · Accepted Answer · 2017-02-06 15:00:13Z

4

You can't access indexes not already created

Try it this way

$cart = [
   'id' => 1,
   'item_name' => 'sample',
   'quantity' => 20,
   'price' => 50,
];

$cart['total'] = $cart['quantity'] * $cart['price'];

answered Feb 6, 2017 at 15:00

beta-developper

1,7841 gold badge14 silver badges29 bronze badges

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

Comments

Rana Ghosh · Accepted Answer · 2017-02-06 15:02:32Z

3

Just try this it will work::

<?php
$cart = [
   'id' => 1,
   'item_name' => 'sample',
   'quantity' => 20,
   'price' => 50,
];
$cart['total'] = $cart['quantity'] * $cart['price'];
echo "<pre>";
print_r($cart);
echo "</pre>";
?>

after you see the result please remove the echo part as your need.

answered Feb 6, 2017 at 15:02

Rana Ghosh

4,6745 gold badges25 silver badges40 bronze badges

Collectives™ on Stack Overflow

Is it possible to access keys in same array - PHP?

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related