convert str to int

katanga

<?
$highest=0;
foreach($s_data as $sub_rec) {
  list($id, $naam, $bericht) = $sub_rec;
  /* $convert=1;
  $id=$id*$convert;
  $id=(int)$id;*/
  if($$highest<$id) {
     $$highest=$id; } }
?>

I've used the function implode() to store everything in a var, after that I stored the data into a 2 dimensional array $s_data.

When I try to make my expression or when I try to do +1 with the value from my 2 dimensional array it wont work or the value becomes 0+1.

I think it's because $num is a string (gettype()) but normally this shouldn't give a problem @ all.

I've searched for 2 days now, a litle help would be welcome because this time google won't help 🙂

thx for reading,
grtz

Merve

Use a typecast then.

For example, if $foo is a string, then you can use $foo = (int) $foo; to make $foo an integer.

Here is more info.

katanga

Jup already tried that, look @ my comment in the code I've posted.

Tried converting it to an int by using *1,+1 or (int) but none of them work because after the convert my value becomes 0 and it was 3 before.

tekky

generally (with mysql for example) you can force a cast with a +0...

that is a weird problem you are having though....

laserlight

Could you give the test data that you are working with, and pinpoint where does the code actually fail?

From the code (this snippet only) that you have given, you cannot possibly have found out about the problem. You discovered this problem elsewhere, and knowing where can help.

Weedpacket

I agree - it's impossible to say what's the issue from the given code. For one thing, there isn't anything resembling "adding" going on. For another, it can't possibly work, because you can't have a variable named "$0" - which is what "$$highest" would evaluate to.

katanga

@ laserlight:
It's impossible to give you all of the code, because it would take me some time to explain it 2 you.
I've been debugging it for 2 days and I concluded the error occured with the type of the variable $h.

With this code I get the objects from an xml-doc and after I put the text from every object and tag into a 2 dimensional array I want to know what's the highest id I already have.

@ that point I cycle throug my array with id's and keep the highest stored in the variable $h.
Form my new object I want to add I take the highest id+1... after that I write my new object to the document.

There couldn't go much wrong because a type of a variable should automaticly change in php when +,-,/,*,... is used and that's what happens. First my highest number is a string (a numeric string) but after I do +1 it changes to an integer and then the value becomes 0. It's like the string-convert doesn't work on that string.

@ weedpacket:
-where exactly did I used the variable $0 :s
-The reason why $$highest occurs in my code is because I've been copy pasting a new name @ all the places to make the code more readable to other ppl. Just a typo.
-what adding should there be in this code?

thx already,
grtz