Using ROUND() on Array Elements

Hi All,

Just a quick one I hope. I have an array with 10 elements and each element as a numerical value. I want to use ROUND to round each value to 0 decimal places and have tried the following:

$element[1] = round($array[1]);


However that did not work, so I tried rounding the entire array at once using:

$newarray[] = round($array[]);


No work either. No errors, they just set the newarray to 0, no matter what the values before.

Any ideas?
Many thanks for your times.

Sir P :D

How about going through them in a foreach:


$element = array(1,2,1.5,2.2,5.9); //Test Array
print_r($element); //Show Before
foreach(array_keys($element) AS $ek){ //Get key of each value so it can be set back to itself
$element[$ek] = round($element[$ek]); //Do rounding
}
print_r($element); //Show array afterwards


Just thinking about it your first example should have worked really so not sure what went wrong there... my snippet at least works for me :P

Are you sure your array elements are considered numbers?

i.e., I don;t know for sure if these 2 declarations are interpreted the same way:

$array[1] = 1.5;
$array[1] = '1.5';

Chump2877: just tested your idea as its a fair assumption but round() still actually works even if the numbers are set with quotes or even typecast as a string, appears to be quite forgiving!

Hi anarchy3200 , thanks for your snipplet, yeh yours is pretty much same as mine and has the same effect, everything gets changed to zero. D'oh. Cheers for you time though.

Hey Chump, I put your code in to debug and damn, every value was indeed a number.. which brings me no closer to solving. Dang.

Thanks again for you time both of you.
Regards,

The usual idiom for applying and function to an array and substituting its values with the result is map, although it's kind of clunky in PHP:


$ints = array_map('round', $floats);

Ok, so after you try ralph l mayo's idea, whats the outcome if you try using a different function like ceil() or floor(), same 0 output?

Ok anarchy, let me just try ralphs then...

Ralph, tried it but maybe im misunderstanding the syntax, i have not used array_map before, would I be using ..

$array = array_map('round', $array);

? I get errors that the second resource should be an array. Is that reffering to the word 'round', is that the bit I misunderstood?

Thanks for all your time everyone :)

Can you do:

var_dump($array);

And post the output here in this thread...

Something doesn;t add up here...I don;t see why you are having this problem...

Once I see the output, I can create my own array with the same key-value pairs, and recreate your situation...And see if I get the same results

Ok Chump great thanks...

If I do not do any rounding and var dump the array I get the following.
array(10) { [0]=> float(18.8583358187) [1]=> float(13.8956158664) [2]=> float(752.348344766) [3]=> int(0) [4]=> int(0) [5]=> float(129.030718759) [6]=> int(0) [7]=> int(0) [8]=> int(0) [9]=> int(0) }

If I try and round using
$array[$i] = round($array[$i]);

And then var dump I get the following.
array(10) { [0]=> float(0) [1]=> float(0) [2]=> float(0) [3]=> float(0) [4]=> float(0) [5]=> float(0) [6]=> float(0) [7]=> float(0) [8]=> float(0) [9]=> float(0) }


Thanks for all your time

I have resolved it!!

Not actually quite sure how, though I believe it was a typo somewhere. I just wrote it again using the $array[$i] = round($array[$i]); approach in a whileloop and it has worked great, correct results now.

I looked back at the other code and still cannot see a typo, but there must be.

When I staretd this and posted yesterday it was about midnight after a long day hha.

I would like to thank you all for your kind help and support.

All the best,
Sir P