Jordan Miller wrote:
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
Or you can do it like that...
Totally brain-faded on the $key bit. I've been bitten by this so many
times that it's just in my head that you can't permanently modify the array.
Cool stuff on the v5 referencing, I guess I'm gonna have to go back
through the manual on everything and not just the new stuff.
Thanks!
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