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
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