Joomla sessions within a loop passing only a single value

Question

I need to pass some variables from one PHP module to another PHP module within a loop and at the same time display the module multiple times as well. I use Joomla sessions for passing variables and its giving me some trouble. Only the last value of the variable gets passed to the second module, meaning only the value attained by a variable when the loop is over is passed to the second module even though I use sessions within the loop.

First Module

for ($i=1;$i<5;$i++) 
{
    $session = JFactory::getSession();
    $session->set('number', $i);

    // calling second module by position

    $modules = JModuleHelper::getModules("second-position");
    foreach($modules as $mod)
      {
         echo JModuleHelper::renderModule($mod, $attribs);
      }
}

Second Module

$session = JFactory::getSession();
$x = $session->get('number');

echo $x;

Output, I get

4 4 4 4

Desired Output

1 2 3 4

What's wrong, and how to correct it? Thanks in advance.

Answer 1

Ok I see the issue now. It's because you've overriding the session variable in the loop, each time.

Instead, try this:

First module

$session = JFactory::getSession();
$modules = JModuleHelper::getModules('second-position');

for ($i=1; $i<5; $i++) 
{
    $session->set('number', $i);

    foreach($modules as $mod)
    {
        echo JModuleHelper::renderModule($mod, $attribs);
    }
}

Second module

$session = JFactory::getSession();

for ($i=1; $i<5; $i++) 
{
    echo $session->get('number' . $i);
}

Update

Don't put the loop within the loop. You can simply acheive what you want using:

$session = JFactory::getSession();

for ($i=1; $i<5; $i++) 
{
    $session->set('number' . $i, $i);
    echo $session->get('number' . $i);
}