Hi,
Thursday, May 13, 2004, 9:59:23 PM, you wrote:
Y> Hello everyone.
Y> I am having a stupid problem with a couple of arrays, tried a couple of
Y> things but I am feeling disconcerted.
Y> The thing is, I thought it was possible to create arrays in a dynamic
Y> fashion, as in:
Y> $newarray['newkey'] = "new_value";
Y> And the array would be incremented accordingly.
Y> And afterwards, if I wanted to add a new key to the thing, just doing:
Y> $newarray['anotherkey'] = "anothervalue"; would be enough.
Y> Generally speaking I have been trying that and it was working, but right
Y> now I am having some trouble with this.
Y> I am parsing a kind of referrals log file, and as I get the values I
Y> want to create a hash with all the values I get into a hash to use
Y> later on.
Y> Each line of the log is processed in a while() loop, and after
Y> extracting the values for $searchSource, $searchDomain and $searchTerm I
Y> try to create the hash entries with these lines:
Y>
$table["$searchSource"]["$searchDomain"]["$searchTerm"]["total"]+=$row['order_total'];
Y> $table["$searchSource"]["$searchDomain"]["$searchTerm"]["count"]++;
Y> "total" is an amount that I want to aggregate for each $seachTerm, and
Y> "count" an obvious counter with total hits per $searchTerm/Domain/Source
Y> combination. $table is an array which I create before entering the loop
Y> with: $table = array();
Y> The problem is that I keep getting this warnings and notices:
Y> Notice: Undefined index: GGAW in
Y> c:\www\deepswarm.co.uk\script\monthlytable.php on line 60
Y> Notice: Undefined index: www.google.com in
Y> c:\www\deepswarm.co.uk\script\monthlytable.php on line 60
Y> Notice: Undefined index: obscuredterm in
Y> c:\www\deepswarm.co.uk\script\monthlytable.php on line 60
Y> Notice: Undefined index: total in
Y> c:\www\deepswarm.co.uk\script\monthlytable.php on line 60
Y> Notice: Undefined index: count in
Y> c:\www\deepswarm.co.uk\script\monthlytable.php on line 62
Y> Using the "@" operator the scripts works perfectly, but I still want to
Y> know why I am generating so many notices, and if there is any other
Y> "cleaner" way of doing things.
Y> I can't create the hash with all necessary keys beforehand because I
Y> won't know the values until runtime, so doing something like:
Y> $table = array ("GGAW" =>
Y> array ("www.google.com" =>
Y> array ("obscuredterm" =>
Y> array("total", "count")
Y> )
Y> )
Y> )
Y> before going into the actual loop is out of the question.
Y> Any ideas? This is probably very obvious, but I keep hitting my head
Y> against the wall. Light would be greatly appreciated.
Y> Thanks for your help.
Y> Regards,
Y> I.-
you have to do it like this:
$table["$searchSource"]["$searchDomain"]["$searchTerm"]["total"]=
(isset($table["$searchSource"]["$searchDomain"]["$searchTerm"]["total"]))?
$table["$searchSource"]["$searchDomain"]["$searchTerm"]["total"] + $row['order_total']
: 1;
--
regards,
Tom
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