checking the occurrence of items in an array and creating a summary

php array sorting and counting question

[newb2seo]

hello.
I have some code that is working 99% but has a slight problem.

It does this:

1. go through an array of keywords[/li]
   
2. foreach: either add it to the summary array or skip it if it has already been added (same keyword already found)[/li]
   
3. then it counts the totals and sorts the array showing the highest number on top.[/li]

It's a simple routine.
And I had it working pretty good but now I see there is a problem with the counting.

If the keyphrase is just one word, it's getting duplicated.
I'm not exactly sure where the problem is but I'll post the code and hopefully someone would be kind enough to point me to the right path to take.

here's the code:
#=========================================================

<?php
// define the test array
$ar1 = array ('three two one','one one','one','TWO','two','two','three','three');
echo'<hr><b>"ar1" - the original INPUT array</b><br>';
print_r($ar1);
// convert all to lowercase
$ar2 = array();
foreach ($ar1 as $val) { $ar2[] = strtolower($val); }
echo'<hr><b>"ar2" - converted to lowercase. Sending this to function "count_items" below.</b><br>';
print_r($ar2);
// count
$counted = array();
$counted = count_items($ar2);
echo'<hr><b>"counted" - array sent back from function "count_items"</b><br>';
print_r($counted);
// function to count and sort
function count_items($ar2) {
$final_ar = array();
foreach ($ar2 as $needle) {
$needle = strtolower($needle); // convert to lower
 if ( in_array($needle, $final_ar) ) {
 #echo $needle.' is in array<br>';
 } else {
 $final_ar[] = $needle;
 }
}
// now count them up
// define some vars
$count_array = array();
$sortme = array();
$haystackArray = $ar2;
$count = "";
foreach ($final_ar as $v) {
$needle = $v;
$count = substr_count ( implode( $haystackArray ), $needle );
$count_array[] = $count;
$sortme[] = $count.'Š'.$v;
}
rsort($sortme,SORT_NUMERIC);
return $sortme;
} // end of function
?>

#=========================================================

What this outputs is this:
#=========================================================

[b]"ar1" - the original INPUT array[/b]
Array
(
 [0] => three two one
 [1] => one one
 [2] => one
 [3] => TWO
 [4] => two
 [5] => two
 [6] => three
 [7] => three
)
[b]"ar2" - converted to lowercase. Sending this to function "count_items" below.[/b]
Array
(
 [0] => three two one
 [1] => one one
 [2] => one
 [3] => two
 [4] => two
 [5] => two
 [6] => three
 [7] => three
)
[b]"counted" - array sent back from function "count_items"[/b]
Array
(
 [0] => 4Štwo
 [1] => 4Šone
 [2] => 3Šthree
 [3] => 1Šone one
 [4] => 1Šthree two one
)

#=========================================================

So as you can see. The item capital "TWO" is also being counted as existing inside of "one two three".

And "one" is counted also inside of "one one".

How can I make it so each item is unique and it will not double the counts like that?

Any help is appreciated.

Thanks.
-Jeff

[mooger35]

How about using array_count_values [us2.php.net] instead.

That should return:

Array
(
[three two one] => 1
[one one] => 1
[one ] => 1
[two] => 3
[three ] => 2
)

Then if you need the format you had you can just loop through the results:

foreach($counted as $key => $val){
$counted2[] = $val."¦".$key;
}

[newb2seo]

well... whaduyaknow!
hehe

I still have lots of learning to do I see. :)

Thanks so much!

[mooger35]

you are welcome. There is an example of what you are doing right in the notes. This will save you some lines of code.

// convert to lowercase and count
$ar = array_count_values(array_map('strtolower', $ar));

[coopster]

I still have lots of learning to do I see. :)

It never stops, newb2seo! Welcome to WebmasterWorld.