[RESOLVED] array_filter question

[perpetualshaun]

Hi,

I'm looking to run a couple test on the array of values I'm passing to my cart system before I actually insert them in the cart. I have this funciton:

array_filter($POST['add_qty'],"is_numeric") != $POST['add_qty'])

That works to ensure that it's actually numbers they are trying to enter in the cart instead of just letters. However, I also want to check that all the values are positive, so they can't enter negative quantities. So is there something like this:

array_filter($POST['add_qty']," ??? ") != $POST['add_qty'])

... that I could add? I tried putting in "is_positive" in there, but that didn't work. Is there something else?

[brandtj]

Here's a good function to filter multidimensional arrays:

<?php
function array_filter_multi($input, $filter="", $keepMatches=true) {
if (!is_array($input))
return ($input==$filter xor $keepMatches==false) ? $input : false;
while (list ($key,$value) = @each($input)){
$res = array_filter_multi($value, $filter,$keepMatches);
if ($res !== false)
$out[$key] = $res;
}
return $out;
}
?>

Default behavior is to remove blanks from a multi-dimensional array, but you can filter out any string (arg #2) with a positive or negative filter (arg #3). [/quote

Not sure if that's what you are looking for. I found that on http://ca.php.net/array_filter right at the very bottom of the page.

[Installer]

ctype_digit() should work for both tests.