PHP Help - Parsing keywords?

gnomer

Hey,

Thanks to everybody whos helped me with my projects on boards.ie, But I have another problem...

I have 2 lists of keywords, seperated by ,

Eg.
list 1 = technology,linux,cool,gadget
list 2 = technology,linux,computers

these lists are strings

I want it to find what keywords list 2 have in common with list 1.

so in other words, it would return technology,linux.

I only want it to take a maximum of 15 keywords, if there are less than 15 keywords in common, then it'll just populate it with keywords from list 1 and list 2 until it reaches 15 keywords.

Anyone help me on getting started even?

thanks!

forbairt

This should sort you out for comparing the two arrays
http://ie2.php.net/manual/en/function.array-intersect.php

gnomer

forbairt wrote: »

This should sort you out for comparing the two arrays
http://ie2.php.net/manual/en/function.array-intersect.php

thats the thing,they are strings, not arrays.

forbairt

why not explode them ? http://ie2.php.net/manual/en/function.explode.php

corkie

Try putting the keywords into a google search?



Just wondering did you drop the music idea, you where previously working on?:rolleyes:

gnomer

corkie wrote: »

Try putting the keywords into a google search?



Just wondering did you drop the music idea, you where previously working on?:rolleyes:

Long story, but I can't use Google to do it, this bit of code is part of a massive project which i will reveal probably next year.

Yes I dropped that music idea, advertisers didn't like the sound of it so funding was impossible...

louie

[php]
$common_list = "";
$list1 = "keyword1,keyword2";
$list2 = "keyword2,keyword3";

$x_list = explode(",",$list1);
$y_list = explode(","$list2);
foreach($y_list as $x){
if(in_array($x,$x_list){
$common_list .= $x.",";
}
}
echo $common_list != "" ? $common_list : "no common words";
[/php]

just a quick example. might get you started.