<?php
session_start();
$object1 = new stdClass();
$object1->client_id = 1;
$object1->name = 'Shikhar Dhawan';
$object1->content1 = 'Some content';

$object2 = new stdClass();
$object2->client_id = 2;
$object2->name = 'Florian Foo';
$object2->content1 = 'Bar some content';

$clients=array($object1, $object2);

$_SESSION['clients']=$clients;

foreach ($_SESSION['clients'] as $client) {
    echo $client->name ." wrote:".$client->content1."\n";
}

exit();
?>