Re: Assign values in foreach-loop

Hello, You simply need the $key variable, then you can set a new value for $arr[$key] for each array element: <?php $arr = array(1, 2, 3, 4); foreach ($arr as $key => $value) { $arr[$key] = $value * 2; } // $arr is now array(2, 4, 6, 8) ?> http://www.php.net/foreach If you have PHP 5, you can perhaps more efficiently do this:

As of PHP 5, you can easily modify array's elements by preceding $value with &. This will assign reference instead of copying the value. <?php $arr = array(1, 2, 3, 4); foreach ($arr as &$value) { $value = $value * 2; } // $arr is now array(2, 4, 6, 8) ?>

Jordan On Sep 7, 2005, at 12:14 PM, Sabine wrote:

Hello to all, is it possible to assign values to the array for which I do the foreach-loop? foreach ($_SESSION['arr1'] as $arr1) { foreach ($_SESSION['arr2'] as $arr2) {

       if ($arr1['id'] == $arr2['id']) {
           $arr1['selected'] = true;
       }

} } I think $arr1 is only a temp-var, so the assignment won't reflect on $_SESSION['arr1'] . Is that right? Surely I can do it with a for-loop, but those arrays are a bit complex and a foreach would be much easier to read. Thanks in advance for your answers Sabine --PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php