hashing and indexing

[spwpreston@gmail.com]

hello,

i am trying to count all of the words in a string, and am trying to
determine the best data structure for this.

i would like to be able to do something like

$arr_text = explode(" ", $text);

then, i want to count each unique word in $arr_text

i tried using the words as the array offsets, and of course i found
that this is illegal.

is there a php data structure which can accomplish this for me?

something like python's dictionary data structure would be perfect.

thank you so much for reading.

-d

[Geoffrey]

Re: hashing and indexing

Hello --

Fortunately, there is a function that was designed for this purpose:
str_word_count. So you might do something like this:

$text = 'Some string of random words';
$words = str_word_count( $text, 1);
$unique_words = array_unique($w ords);
$number_unique_ words = count($unique_w ords);
print $number_unique_ words;

I hope this helps.


Geoffrey


spwpreston@gmai l.com wrote:

hello,
>
i am trying to count all of the words in a string, and am trying to
determine the best data structure for this.
>
i would like to be able to do something like
>
$arr_text = explode(" ", $text);
>
then, i want to count each unique word in $arr_text
>
i tried using the words as the array offsets, and of course i found
that this is illegal.
>
is there a php data structure which can accomplish this for me?
>
something like python's dictionary data structure would be perfect.
>
thank you so much for reading.
>
-d

[Peter Fox]

Re: hashing and indexing

Following on from 's message. . .

See array_count_val ues() in the manual. I Believe this is exactly what
you're looking for.

>
>
>hello,
>
i am trying to count all of the words in a string, and am trying to
>determine the best data structure for this.
>
i would like to be able to do something like
>
$arr_text = explode(" ", $text);
>
then, i want to count each unique word in $arr_text
>
i tried using the words as the array offsets, and of course i found
>that this is illegal.
>
is there a php data structure which can accomplish this for me?
>
something like python's dictionary data structure would be perfect.
>
>thank you so much for reading.
>
>-d
>

--
PETER FOX Not the same since the porcelain business went down the pan
peterfox@eminen t.demon.co.uk.n ot.this.bit.no. html
2 Tees Close, Witham, Essex.
Gravity beer in Essex <http://www.eminent.dem on.co.uk>