Array problem

julian_chamberl

Hi, I have a string that using a delimator i turn into an array like follows:

$v = "50297:50297:50297:50294:50294:50294:50295:50295:";

$a = explode(':', $v);

I then just list them without repeating any like so :

foreach ((array_unique($a)) as $value) {
echo "$value <br>";
$counter++;
}

Now this works fine, as it only shows 3 different value but the counter has 4????? Why is this? Also when i add code to send an emal instead of count it is god awful slow!

Thanks

Jules

NogDog

What value is $counter initialized at before you start the loop?

julian_chamberl

0 and if i send emails within the loop, it always send one twice!!!!?????

NogDog

You end up with an empty array element since you have a trailing colon in the string.

$a = explode(':', trim($v, ':'));

🙂

julian_chamberl

Ok thanks. Will try it but why does it load a value?

NogDog

Because your separator is ":", and since the string ends with a separator, it creates a final element in the array with a value of an empty string (""). Then when you run array_unique(), one of the unique values is the empty string, so $a will be:

0 => "50297",
1 => "50294",
2 => "50295",
3 => ""