Skipping array element in foreach loop ...

In this sample code, is it possible to skip an element in the array, say, 3? If so, how?

<?php
$arr = array(1, 2, 3, 4);
foreach ($arr as &$value)
{
$value = $value * 2;
}

Thanks

 

<?php
$arr = array(1, 2, 3, 4);
foreach ($arr as $value)
{
    if($value==3){
        continue;
    }
    echo $value = $value * 2 . "\n";
}
?>

Code (markup):

returns:
2
4
8

 

this is one way:

<?php
$arr = array(1, 2, 3, 4);
foreach ($arr as &$value) 
{
	if($value!=3){
		$value = $value * 2;
	}
}
?>

PHP:

And here's another:

<?php
$arr = array(1, 2, 3, 4);
foreach ($arr as &$value) 
{
	$i++;
	if($i!=3){
		$value = $value * 2;
	}
}
?>

PHP:

There are other ways if these are not what you're looking for, but you'll have to provide more details.

 

Thanks to Jan and Sepehr.