Getting warnings for my array function.

habbardone

Hi,

The following code should find 3 word phrases
then if they occur more than once, add them to
the variable $phrase3.

Unfortunately it is just giving me a warning and $phrase3
is empty

// Get three word phrases
if(preg_match_all("#((?:\b\w{1,20}\b\s+){3})#", $data, $matches)) {
  $phrases = array_count_values($matches);
  foreach($phrases as $key => $val) {
    if ( $val > 1 ) {
           $phrase3 = $phrase3." ".$key;
        }  // end if 
  }  // end foreach
}  // end if

This is the warning:

Warning: array_count_values() [function.array-count-values]: Can only count STRING and INTEGER values! in /home/guru54gt5/public_html/sys/get_google.php on line 128

Can anyone see what I did wrong ?

Weedpacket

The elements of $matches are arrays, not strings nor integers.

print_r($matches);

habbardone

Thanks for that advice,

I can now see that my regex is not doing what I want anyway 😕

preg_match_all("#((?:\b\w{1,20}\b\s+){3})#", $data, $matches)

This is part of the out put from print_r($matches);

[32] => technical support [33] => services attempt [34] => to help [35] => the user [36] => solve specific [37] => problems with

As you can see, the data is just being devided into two word chunks.

What I wanted was a list of all the two word phrases, so I should be getting:

[32] => technical support [33] => support services [34] => services attempt
[35] => attempt to [36] => to help [37] => help the [38] => the user

You see the overlap ?
But this ensures that I get all the phrases.

How would I need to change my regex to achieve my desired output ?

Weedpacket

One solution would be to use preg_match to get all the two-word chunks from the string, then drop the first word from the string and use preg_match again.

Or use [man]preg_split[/man] to break the string into an array of individual words, followed by a couple of calls to [man]array_chunk[/man] (two calls as in the previous paragraph).

habbardone

Can you please give an example of what you mean
because I can not really follow it.

I have read those two functions on the manual
but I can not see how to apply them to my case.

BTW - I should have said this is for two-word phrases
(not three)

And the regex is:

preg_match_all("#((?:\b\w{1,20}\b\s+){2})#", $data, $matches)

which produces this output:

[32] => technical support [33] => services attempt [34] => to help
[35] => the user [36] => solve specific [37] => problems with

As you can see, the data is just being divided into two word chunks.

And I am missing half of the possible phrases eg "support services"
is not reported.

I would like to move from that, to this:

[32] => technical support [33] => support services [34] => services attempt
[35] => attempt to [36] => to help [37] => help the [38] => the user

Thanks for helping. :=)

Weedpacket

$words = preg_split('/\s+/', $text)
And between [man]array_chunk[/man] and [man]array_shift[/man] you should be able to figure out the rest