Keyword array

[Karl Groves]

I'm looking to make a keyword array.

Let's say I have the following array:

$words = array
("foo","lorem","foo","ipsum","bar","foo","dolor"," sit","foo","bar","amet","
lorem");

I'd like to create a new array with the top X words, ordered by occurrence
In the above example, the new array would be:
$keywords = array("foo","bar","lorem");

Any help is appreciated.

--
Karl Groves
www.karlcore.com

[Rik]

Karl Groves wrote:

I'm looking to make a keyword array.

Let's say I have the following array:

$words = array

("foo","lorem","foo","ipsum","bar","foo","dolor"," sit","foo","bar","amet","

lorem");

I'd like to create a new array with the top X words, ordered by
occurrence In the above example, the new array would be:
$keywords = array("foo","bar","lorem");

I assum the top X words, ordered _descending_?

$number = 10;//or another if you wish
$top = array_slice(array_keys(rsort(array_count_values($w ords))),0,$number);

If PHP5 or higher this will be better:
$top =
array_keys(array_slice(rsort(array_count_values($w ords)),0,$number,true));

Grtz,
--
Rik Wasmus

[Karl Groves]

"Rik" <lu************@hotmail.comwrote in
news:eb**********@netlx020.civ.utwente.nl:

Karl Groves wrote:

>I'm looking to make a keyword array.

Let's say I have the following array:

$words = array

("foo","lorem","foo","ipsum","bar","foo","dolor"," sit","foo","bar","am

e

t","

>lorem");

I'd like to create a new array with the top X words, ordered by
occurrence In the above example, the new array would be:
$keywords = array("foo","bar","lorem");

I assum the top X words, ordered _descending_?

$number = 10;//or another if you wish
$top =
array_slice(array_keys(rsort(array_count_values($w ords))),0,$number);

If PHP5 or higher this will be better:
$top =
array_keys(array_slice(rsort(array_count_values($w ords)),0,

$number,true

));

Grtz,

Thanks for the response.

Here's what I have:

$words = array("foo", "lorem", "ipsum", "foo", "dolor", "sit", "bar",
"amet", "four", "score", "foo", "and", "seven", "bar", "years", "ago",
"foo", "our", "lipsum", "forefathers", "foo");

$number = 3;

$top = array_keys(array_slice(rsort(array_count_values($w ords)),0,
$number,true));

print("<pre>");
var_dump($top);
print("</pre>");
Returns the following error:

Warning: array_keys() [function.array-keys]: The first argument should
be an array in /path/to/file.php on line 7

--
Karl Groves
www.karlcore.com

[Rik]

Karl Groves wrote:

"Rik" <lu************@hotmail.comwrote in
news:eb**********@netlx020.civ.utwente.nl:

>Karl Groves wrote:

>>I'm looking to make a keyword array.

Let's say I have the following array:

$words = array

("foo","lorem","foo","ipsum","bar","foo","dolor", "sit","foo","bar","am
e t","

>>lorem");

I'd like to create a new array with the top X words, ordered by
occurrence In the above example, the new array would be:
$keywords = array("foo","bar","lorem");

I assum the top X words, ordered _descending_?

$number = 10;//or another if you wish
$top =
array_slice(array_keys(rsort(array_count_values($ words))),0,$number);

If PHP5 or higher this will be better:
$top =
array_keys(array_slice(rsort(array_count_values($ words)),0,
$number,true ));

Grtz,

Thanks for the response.

Here's what I have:

$words = array("foo", "lorem", "ipsum", "foo", "dolor", "sit", "bar",
"amet", "four", "score", "foo", "and", "seven", "bar", "years", "ago",
"foo", "our", "lipsum", "forefathers", "foo");

$number = 3;

$top = array_keys(array_slice(rsort(array_count_values($w ords)),0,
$number,true));

print("<pre>");
var_dump($top);
print("</pre>");
Returns the following error:

Warning: array_keys() [function.array-keys]: The first argument should
be an array in /path/to/file.php on line 7

Je m'excuse. rsort offcourse returns a bool.

$occurence = array_count_values($words);
rsort($occurence);
$top = array_slice(array_keys($occurence),0,$number);

Suits me right for trying to make an illegible oneliner.

Grtz,
--
Rik Wasmus

[Karl Groves]

"Rik" <lu************@hotmail.comwrote in news:dc00a$44e22551$8259c69c
$3****@news1.tudelft.nl:

Karl Groves wrote:

>"Rik" <lu************@hotmail.comwrote in
news:eb**********@netlx020.civ.utwente.nl:

>>Karl Groves wrote:
I'm looking to make a keyword array.

Let's say I have the following array:

$words = array

("foo","lorem","foo","ipsum","bar","foo","dolor"," sit","foo","bar","am

>>e t","
lorem");

I'd like to create a new array with the top X words, ordered by
occurrence In the above example, the new array would be:
$keywords = array("foo","bar","lorem");
I assum the top X words, ordered _descending_?

$number = 10;//or another if you wish
$top =
array_slice(array_keys(rsort(array_count_values( $words))),0,

$number);

>>>
If PHP5 or higher this will be better:
$top =
array_keys(array_slice(rsort(array_count_values( $words)),0,
$number,true ));

Grtz,

Thanks for the response.

Here's what I have:

$words = array("foo", "lorem", "ipsum", "foo", "dolor", "sit", "bar",
"amet", "four", "score", "foo", "and", "seven", "bar", "years",

"ago",

>"foo", "our", "lipsum", "forefathers", "foo");

$number = 3;

$top = array_keys(array_slice(rsort(array_count_values($w ords)),0,
$number,true));

print("<pre>");
var_dump($top);
print("</pre>");
Returns the following error:

Warning: array_keys() [function.array-keys]: The first argument

should

>be an array in /path/to/file.php on line 7

Je m'excuse. rsort offcourse returns a bool.

$occurence = array_count_values($words);
rsort($occurence);
$top = array_slice(array_keys($occurence),0,$number);

Suits me right for trying to make an illegible oneliner.

Thanks, though this is now only giving the keys, not the words
themselves

array(3) {
[0]=>
int(0)
[1]=>
int(1)
[2]=>
int(2)
}

--
Karl Groves
www.karlcore.com

[Rik]

Karl Groves wrote:

"Rik" <lu************@hotmail.comwrote in
news:dc00a$44e22551$8259c69c $3****@news1.tudelft.nl:

>Karl Groves wrote:

>>>
$top = array_keys(array_slice(rsort(array_count_values($w ords)),0,
$number,true));

print("<pre>");
var_dump($top);
print("</pre>");
Returns the following error:

Warning: array_keys() [function.array-keys]: The first argument
should be an array in /path/to/file.php on line 7

Je m'excuse. rsort offcourse returns a bool.

$occurence = array_count_values($words);
rsort($occurence);
$top = array_slice(array_keys($occurence),0,$number);

Suits me right for trying to make an illegible oneliner.

Thanks, though this is now only giving the keys, not the words
themselves

array(3) {
[0]=>
int(0)
[1]=>
int(1)
[2]=>
int(2)
}

Pfff, never a good idea to try to post while talking to your mother on the
phone (oh yeah, which disease has this family member got now...). You have
my complete and undivided attention now: occording to the manual rsort()
deletes the keys we so desperately want. arsort() is the solution.

Here we go, and I've finally tested the code before posting :-).
<?php
$number = 4;
$words = array("foo", "lorem", "ipsum", "foo", "dolor", "sit", "bar",
"amet", "four", "score", "foo", "and", "seven", "bar", "years", "ago",
"foo", "our", "lipsum", "forefathers", "foo");

$occurence = array_count_values($words);
arsort($occurence);
$top = array_slice(array_keys($occurence),0,$number);
print_r($top);
?>
(
[0] =foo
[1] =bar
[2] =years
[3] =seven
)

Sorry for the mess I posted earlier.

Grtz,
--
Rik Wasmus

[Karl Groves]

"Rik" <lu************@hotmail.comwrote in
news:d0**************************@news1.tudelft.nl :

)

Sorry for the mess I posted earlier.

Thank you so much for the help. Everything works as intended now.

--
Karl Groves
www.karlcore.com