Adding data in a variable into an array...

[listenmirndt]

FOREACH ($pieces as $k => $email) {

if (!empty($email)) {

	$stack = "'$email', $stack ";

}


$emails = array($stack);

does not work... just puts the $stack into one long string...

[bradgrafelman]

It does work, because that's exactly what you're telling PHP to do. Since you didn't give a description (or an example) of what you actually expect, I have no clue what it is you're really after.

[listenmirndt]

Ok,
what I mean is,

$emails = array('one', 'two');

$stack = "'one', 'two'";
$emails2 = array($stack);

print_r($emails);
print_r($emails2);

returns:

Array ( [0] => one [1] => two )
Array ( [0] => 'one', 'two' )

the first one is how I want it, why does it put the whole string into [0] with the 2nd one?

[NogDog]

Because $stack is a scalar variable consisting of one string. The fact that it happens to look a lot like the arguments you passed to array() in the first example does not mean that it is, in fact, two separate arguments -- it's just a single string. You could use eval(), I suppose, though that's usually a last-ditch solution. You could use explode(), but then the internal quotes might be problematic.

$emails2 = explode(',', $stack);

...or (to deal with those quotes)...

$emails2 = explode("', '", trim($stack, "'"));

The "best" solution, however, probably depends on a better understanding of the situation and requirements that got you into this position in the first place.

[bradgrafelman]

... and if what you want is an array where each item is an e-mail address, then why aren't you simply using the $pieces array as-is in your example code above?

[Weedpacket]

Also, there is nothing in your example that explains what the [man]empty[/man] test in your original code is for - and since that is a key part of the loop (and, based on your follow-up and bradgrafelman's reply immediately above - namely, the fact that "what you want" is exactly the same as what you start with) it's the whole point of having the loop.

Are you trying to filter empty values out of the array?

[Ashley_Sheridan]

As other above have explained, you're getting confused over how strings and arrays work. What you seem to be looking for is something more like this:

$stack = array();
foreach($pieces as $k => $email)
{
    if (!empty($email))
    {
         $stack[] = $email;
    }
}


$emails = array($stack);

i've also taken the liberty of fixing the broken braces in the example you first posted.

[bradgrafelman]

@: Seems a bit strange to create a multi-dimensional array where the first dimension only contains a single element - another array.

Regardless, it'd be a lot simpler to just use [man]array_filter/man as suggested in the thread that this one appears to duplicate (yet provides less context).

[Ashley_Sheridan]

Ah, I forgot to change the last line, the rest stands though. I didn't suggest array_filter() as I wanted to show the basic concepts here. array_filter() would be better, but I think it's more important the OP gets the basics first.

[Weedpacket]

After nine years I would have thought learning the available functionality would be a good idea 🙂

[Ashley_Sheridan]

I missed that too. 9 years is longer than I've been using PHP!