Save session data in a PHP array

Question

In a php page I'm getting values and I can save it like follows:

<?php
 session_start();
// store session data
$_SESSION['advert']=8;
?>

and retrieve it like follows:

<?php
   //retrieve session data
   echo "advertID=". $_SESSION['advert'];
?>

and I can retrieve the value as 8 later.

But I need to save three product value IDs in a PHP array in a search session and later I need to retrieve them and connect them with the database(my SQL) to build up a compare table among those three products. How can I save three values in a PHP array and retrieve them later in a PHP session?

And if try to save more IDs:

4th ID should be replaced with the first value in the array
5th ID should be replaced with the second value in the array
6th ID should be replaced with the third value in the array and goes like that..

Just... put them in an array and store that in the session...? What's the problem? — deceze
– deceze ♦, Commented May 29, 2014 at 7:20
i haven't used php session and arrays for this kind of task earlier so i'm bit confused. — Roshan Jayawardana
– Roshan Jayawardana, Commented May 29, 2014 at 7:24
Then explain in more detail what exactly you're confused about. — deceze
– deceze ♦, Commented May 29, 2014 at 7:25
if i need to add more values than three can we replace earlier values with new values — Roshan Jayawardana
– Roshan Jayawardana, Commented May 29, 2014 at 7:30

deceze · Accepted Answer · 2014-05-29 07:39:56Z

1

session_start();

if (!isset($_SESSION['products'])) {
    $_SESSION['products'] = array();
}

// add new product
$_SESSION['products'][] = $productId;

// trim array down to a maximum of three
$_SESSION['products'] = array_slice($_SESSION['products'], -3);

This way you keep a FIFO list of the last three products.

answered May 29, 2014 at 7:39

deceze♦

525k89 gold badges806 silver badges954 bronze badges

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

Comments

Janaka R Rajapaksha · Accepted Answer · 2014-05-29 07:43:13Z

1

Method 1: (just save values to session variables if you have small number of variables like 3.)

$_SESSION['var1'] = "value1";
$_SESSION['var2'] = "value2";
$_SESSION['var3'] = "value3";

Method 2: (using arrays)

$array = array();
$array['var1'] = "value1";
$array['var2'] = "value2";
$array['var3'] = "value3";

$_SESSION['array_values'] = $array;

when you want to replace:

just repeat the method
Or use $_SESSION['array_values']['var#'] = "value#";

answered May 29, 2014 at 7:43

Janaka R Rajapaksha

3,7741 gold badge29 silver badges29 bronze badges

Comments

웃웃웃웃웃 · Accepted Answer · 2014-05-29 07:22:06Z

0

$arrSession = array();
$arrSession[] = 'Value1';
$arrSession[] = 'Value2';
$arrSession[] = 'Value3';


$_SESSION['search'] = $arrSession;

//Retrive it as $_SESSION['search'] whereever necessary

answered May 29, 2014 at 7:22

웃웃웃웃웃

12k15 gold badges63 silver badges95 bronze badges

1 Comment

Roshan Jayawardana Over a year ago

if i need to replace the values in the array what can i do?

Collectives™ on Stack Overflow

Save session data in a PHP array

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest