[FX.php List] A little more clarity on my array_unique question

[Andrew Denman]

In your original questions, it appears you were sending
$vlData['target_name'][0] to array_unique, but $vlData['target_name'][0] is
not an array - it's a string.  You have to write all of the strings to an
array and then run it through array_unique.

I would do the following to prevent the name and image link from becoming
mismatched when you run array_unique.  This assumes that two car names won't
share the same image, as the image data is what's going to be compared for
uniqueness.

foreach($vlResult['data']as $key=>$vlData) {
	$carlist[$vlData['target_name'][0]] =
"/images".$reportyear."/".$vlData['target_image'][0];
}
array_unique($carlist);

foreach($carlist as $carName => $carImage) {
  // Output
}

If you needed the separate arrays, this should work.  It also assumes that
two car names won't share the same image, as then you can end up with one
array shorter than the other.

foreach($vlResult['data']as $key=>$vlData) {
	$n[$c] = $vlData['target_name'][0];
	$i[$c] = "/images".$reportyear."/".$vlData['target_image'][0];
	$c++;
}
array_unique($n);
array_unique($i);

And let's hope this email keeps all it's line returns this time.

Andrew Denman

-----Original Message-----
From: fx.php_list-bounces at mail.iviking.org
[mailto:fx.php_list-bounces at mail.iviking.org] On Behalf Of Bob Patin
Sent: Thursday, April 12, 2007 10:23 AM
To: FX.php Discussion List
Subject: [FX.php List] A little more clarity on my array_unique question

Perhaps I should explain more what I'm trying to achieve:

I'm returning an array $vlData that has auto names & image names,  
like this:

Chevrolet Astro ---- $vlData['target_name'][0]
Chevrolet Astro.jpg ---- $vlData['target_image'][0]

When I return this array, there can be a lot of records with the same  
vehicle in them, and I need to display a single button for each vehicle.

So I've been using a FOREACH loop to cycle thru the results, and then  
create a 2nd array that contains only non-duplicates.

The problem is that some models, Chevrolet particularly, have a ton  
of matches (in this case, 1722), and the loop takes a long time to  
finish.

So here's my code so far; this works, but it's slow as Christmas:

<?php
$c=0;
//nuke the array first
while($c<25){
	$n[$c]='';
	$i[$c]='';
	$c++;
}
$thename='';
$c=0;
$n = array('thename');
$i = array('image');

foreach($vlResult['data']as $key=>$vlData) {
	if ($thename <> $vlData['target_name'][0]){
		$n[$c] = $vlData['target_name'][0];
		$i[$c] =
"/images".$reportyear."/".$vlData['target_image'][0];
		$thename = $vlData['target_name'][0];
		$c++;
	}
}
?>

Any thoughts? :)

Thanks,

Bob




_______________________________________________
FX.php_List mailing list
FX.php_List at mail.iviking.org
http://www.iviking.org/mailman/listinfo/fx.php_list