Dynamic Array

[Anon]

I'm looking for a way to build a dynamic array.

Something like this ...

for ($i = 0; $i < count($lines); $i++) {
$arrLine = explode("-", $lines[$i]);
$day_num = $arrLine[2];
$day[$day_num] = $arrLine[6];
}

This should create:
$day[1] = something
$day[2] = something
$day[3] = something
etc...

Unfortunately I'm having problems with having a dynamic variable on the left side of the equal sign ($day[$day_num]).

Can anyone help me out on this one?

Thanks in advance

J

[Anon]

I guess it looks fine to me; what's the problem?

[Anon]

If I have, $day[$day_num], and $day_num equals 18, when I echo ...

echo $day[18];

I get a blank back.

[Anon]

Hmm. Let's try a few diagnostics:

In the loop, each $lines[$i] and also do print_r($arrline) - let's make sure they're what they should be.

If that's all looking good, then print_r($day) at the end to see what you've ended up with.

And one last question, before I forget - you do know that arrays are indexed starting at 0? Just checking: I ask only because your example sample output starts at 1, and only because making that mistake in the code would mean that $arrLine[2] should be $arrLine[1] and $arrLine[6] should be $arrLine[5]; I wouldn't have mentioned it otherwise.