Add/Change Array to/in existing PHP $_SESSION

Question

I got following array in my PHP $_SESSION

[CART] => SHOPPINGCART OBJECT
       (
             [CONTENTS] => ARRAY
                  (
                     [121] => ARRAY
                        (
                            [QTY] => 1
                         )

I know how to change some simple $_SESSION variable, but what if there is an array in array and then there is the value I want to change? Or what if i wanted to add a new Array to [CONTENTS]? Sadly i couldn't find a solution on here.

In this case for example I want to change the QTY from 1 to 5 — Marcel Wasilewski
– Marcel Wasilewski, Commented Dec 10, 2015 at 9:55
@monace19 You might want to rethink that based on [CART] => SHOPPINGCART OBJECT — RiggsFolly
– RiggsFolly, Commented Dec 10, 2015 at 9:57
@monace19 Nope, not working. And it is possible that there are 2 or 3 QTY in session, but only one which belongs to [121] so it has to be specified somehow. — Marcel Wasilewski
– Marcel Wasilewski, Commented Dec 10, 2015 at 9:57

RiggsFolly · Accepted Answer · 2015-12-10 10:20:32Z

2

Your $_SESSION array actually contains an OBJECT which contains and ARRAY which contains an ARRAY

So using normal notation to access QTY for example you would do

echo $_SESSION['CART']->CONTENTS[121]['QTY'];

Or changing the QTY

$_SESSION['CART']->CONTENTS[121]['QTY'] = 10;

Adding a new array to CONTENTS would be

$_SESSION['CART']->CONTENTS[] = array('QTY' => 2);

Then viewing all the CONTENTS array you could do

foreach ( $_SESSION['CART']->CONTENTS as $id => $content ) {
    echo "$id\n"
    foreach ( $content as $qty ) {
        echo "    $qty\n";
    }
}

edited Dec 10, 2015 at 10:20

answered Dec 10, 2015 at 10:03

RiggsFolly

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6 Comments

Marcel Wasilewski Over a year ago

This gets me a Parse Error: PARSE ERROR(4): "syntax error, unexpected '[', expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$'"

RiggsFolly Over a year ago

Sorry missed the 121 occurance, see amended example

RiggsFolly Over a year ago

2 seconds I will test

Gino Pane Over a year ago

@MarcelWasilewski use this $_SESSION['CART'] instead $_SESSION->['CART']

RiggsFolly Over a year ago

@MarcelWasilewski Thats it, got a bit confused there for a second. Thanks for spotting the typo

|

Jan · Accepted Answer · 2015-12-10 09:58:44Z

0

One could use a combination of serialize()/unserialize().
To store it in a session:

$cart= new SHOPPINGCART();
$_SESSION['cart'] = serialize($cart);

To actually change values from it:

$cart = unserialize($_SESSION['cart']);
// do anything with cart and store it afterwards with the code above
$cart["quantity"] += 1; // increment it by one
$_SESSION['cart'] = serialize($cart);

answered Dec 10, 2015 at 9:58

Jan

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1 Comment

RiggsFolly Over a year ago

He is not asking how to store it, he is asking how to access what is already stored, presumably by something he has not written himself

musafar006 · Accepted Answer · 2015-12-10 10:09:32Z

0

$temp = $_SESSION['CART'];
$temp->CONTENTS['121']['QTY'] = 5;
$_SESSION['CART'] = $temp;

Check if this works; then we can think of a way for specifying "121".

answered Dec 10, 2015 at 10:09

musafar006

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