Php script won't work

I can't get this Keyword density analyzer to work, can someone please help

[webmasterman]

I am new to php and decided to try a php script, so far not good. I can't get the script below to work and I don't know why it won't work. What do I need to change in the script below to make it work?

This is the code
<?php

function kda($url)
{

if(!stristr($url, 'http://'))
{
$url = 'http://'.$url;
}

if($html = @file_get_contents($url))
{
$html = html_entity_decode(file_get_contents($url));
//preg_match('/(?<=<title>).*?(?=<\\/title>)/is', $html, $matches);
//$title = array_shift($matches);

$meta_tags = get_meta_tags($url);
$html = kda_strip_tag_script($html);
$no_html = strip_tags($html);

$tag_info = $meta_tags['description']." ".$meta_tags['keywords'];
$text .= $tag_info." ".$no_html;
$total = count(explode(' ', $text));

$text = kda_clean(kda_stopWords($text));
$words = explode(' ', $text);
$total = count($words);
for($x=0; $x<$total; $x++)
{
$words[$x] = trim($words[$x]);
if($words[$x]!='')
{
$ws[$words[$x]]++;
if(trim($words[$x+1])!='')
{
$phrase2 = $words[$x]." ".trim($words[$x+1]);
$ws[$phrase2]++;
if(trim($words[$x+2])!='')
{
$phrase3 = $words[$x]." ".trim($words[$x+1])." ".trim($words[$x+2]);
$ws[$phrase3]++;
}
}
}

}
foreach($ws as $word=>$count)
{
if( ($count>1) and (strlen($word)>2) )
{
$phrase_size = count(explode(' ', $word));
$occurances[$phrase_size] = $occurances[$phrase_size] + $count;
}
}

foreach($ws as $word=>$count)
{
if( ($count>1) and (strlen($word)>2) )
{
$phrase_size = count(explode(' ', $word));
$density = round( ($count/$occurances[$phrase_size])*100, 2);
$dens[$phrase_size][$word] = $density;
}
}

arsort($dens[1]);
if($dens[2])
{
arsort($dens[2]);
}
if($dens[3])
{
arsort($dens[3]);
}


$return = array('dens'=>$dens, 'occurances'=>$occurances);
/*
echo "<pre>";
print_r($occurances);
print_r($dens);
*/
return $return ;
}else {
return false;
}
}
function kda_strip_tag_script($html) {
$pos1 = false;
$pos2 = false;
do {
if ($pos1!== false && $pos2!== false) {
$first = NULL;
$second = NULL;
if ($pos1 > 0)
$first = substr($html, 0, $pos1);
if ($pos2 < strlen($html) - 1)
$second = substr($html, $pos2);
$html = $first . $second;
}
preg_match("/<script[^>]*>/i", $html, $matches);
$str1 =& $matches[0];
preg_match("/<\/script>/i", $html, $matches);
$str2 =& $matches[0];
$pos1 = strpos($html, $str1);
$pos2 = strpos($html, $str2);
if ($pos2!== false)
$pos2 += strlen($str2);
} while ($pos1!== false && $pos2!== false);
return $html;
}
function kda_clean($text)
{
global $stopwords_file;
$text = str_replace('.', '', $text);
$text = str_replace(',', '', $text);
$text = str_replace('(', '', $text);
$text = str_replace(')', '', $text);
$text = str_replace('_', '', $text);
$text = str_replace('*', '', $text);
$text = str_replace('"', '', $text);
$text = str_replace('-', '', $text);
$text = str_replace("!", '', $text);
$text = str_replace("?", '', $text);
$text = str_replace("\n", '', $text);
$text = str_replace('/', '', $text);
$text = str_replace('&#8217;', "'", $text);

return trim(strtolower($text));
}
function kda_stopWords($term)
{
global $sw_count;
//load list of common words
$common = file('kdawords.txt');
$total = count($common);
for ($x=0; $x<= $total; $x++)
{
$common[$x] = trim(strtolower($common[$x]));
}

//make array of search terms
$_terms = explode(" ", $term);

foreach ($_terms as $line)
{
if (in_array(strtolower(trim($line)), $common))
{
$removeKey = array_search($line, $_terms);
$sw_count++;
unset($_terms[$removeKey]);
}
else
{
$clean_term .= " ".$line;
}
}
return $clean_term;
}
?>

Thanks for the help.
Mike

[Timotheos]

Welcome to WebmasterWorld!

What exactly is not working? Are you getting any error messages?

[webmasterman]

I am not getting any error messages. My problem is I am using a form where people fill it out (their URL) then they hit submit, when you submit the form it comes up to a blank page. The form I am using is

<form action="/url-to-the-script" method="post">
Enter a URL to be analyzed: <input type="text" name="url" value="" size="50"> <input type="submit" name="submit" value="Analyze"><br/> Would like to Include Meta Tags? <input type="checkbox" name="use_meta_tags"></form>

I don't know why it's not working, I have tried a few other things and don't know if there are anything wrong with the php script.

Mike

[jatar_k]

Welcome to WebmasterWorld webmasterman,

my wild guess is that maybe register_globals is off

try putting this at the top of the script before any processing

extract [ca2.php.net]($_POST);

[Timotheos]

You know what's weird about this too is that what you posted is just four functions. If that's all you have on the page then nothing is going to show because nothing is calling the functions. In other words it's incomplete. That make sense?

[webmasterman]

Thanks to all of you for helping me!

Timotheos how could I get it to show?

[sidyadav]

You can probably echo the functions.

Use:
echo function_name();

Sid

[Timotheos]

The main function is kba($url), so at the bottom just put something like

$info = kba($_POST['url']);

If this is public you might want to do some checks on the url post variable for security.

You'll also need to have a PHP 4 >= 4.3.0 or PHP 5 to make this work.

The info comes back in an array
$return = array('dens'=>$dens, 'occurances'=>$occurances);

I've seen stargeek on these forums so maybe he'll drop by and help out.

[robotsdobetter]

Have you checked your logs for problems?

[robotsdobetter]

Hey webmasterman,

I heard they will becoming out with as new version of that soon.