Hello you PHP Community! I am looking to make an automatic meta keyword generator based on an array of phrases. It is more my site that is under construction, PHPMine. Go to the "Q and A" section and you'll see a series of questions there, five in total. right now the system simply grabs all the words there, filters though common words, and then spits out the words as keywords. I would like some advice on how to set it up in this way:

• puts all the words in an array and counts their frequency
• creates an array of two words phrases and counts their frequency
• does the same for 3 word phrases
• spits out the top 25 keywords from the array generated

maybe someone has already cooked up this nasty script. thanks in advance guys!

I made something like this a while back, here is theory/basic code behind it.

PHP Code:

// Grab the html
$site =  file_get_contents(URL to FILE);

// take out the html - so text only now.
$words = strip_tags($site);

// explode on the spaces
$words = explode(" ", $words );

// count.
foreach($words as $word){
if($keywords[$word] == true){
$keywords[$word] = $keywords[$word] + 1;
} else {
$keywords[$word] = 1;
}
} 


but this does not calculate phrases