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<?php
/************************************************************\
* Ã
* wordCloud Copyright 2007 Derek Harvey
* www.lotsofcode.com
*
* This file is part of wordCloud.
*
* wordCloud is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wordCloud is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with wordCloud; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
\************************************************************/
class wordCloud
{
var $version = '1.0';
var $wordsArray = array();
/*
* PHP 5 Constructor
*
* @param array $words
* @return void
*/
function __construct($words = false)
{
if ($words !== false && is_array($words))
{
foreach ($words as $key => $value)
{
$this->addWord($value);
}
}
}
/*
* PHP 4 Constructor
*
* @param array $words
* @return void
*/
function wordCloud($words = false)
{
$this->__construct($words);
}
/*
* Assign word to array
*
* @param string $word
* @return string
*/
function addWord($word, $value = 1)
{
//$word = strtolower($word);
if (array_key_exists($word, $this->wordsArray))
$this->wordsArray[$word] += $value;
else
$this->wordsArray[$word] = $value;
return $this->wordsArray[$word];
}
/*
* Shuffle associated names in array
*/
function shuffleCloud()
{
$keys = array_keys($this->wordsArray);
shuffle($keys);
if (count($keys) && is_array($keys))
{
$tmpArray = $this->wordsArray;
$this->wordsArray = array();
foreach ($keys as $key => $value)
$this->wordsArray[$value] = $tmpArray[$value];
}
}
/*
* Calculate size of words array
*/
function getCloudSize()
{
return array_sum($this->wordsArray);
}
/*
* Get the class range using a percentage
*
* @returns int $class
*/
function getClassFromPercent($percent)
{
if ($percent >= 99)
$class = 1;
else if ($percent >= 70)
$class = 2;
else if ($percent >= 60)
$class = 3;
else if ($percent >= 50)
$class = 4;
else if ($percent >= 40)
$class = 5;
else if ($percent >= 30)
$class = 6;
else if ($percent >= 20)
$class = 7;
else if ($percent >= 10)
$class = 8;
else if ($percent >= 5)
$class = 9;
else
$class = 0;
return $class;
}
/*
* Create the HTML code for each word and apply font size.
*Ã
* @returns string $spans
*/
function showCloud($returnType = "html")
{
$this->shuffleCloud();
$this->max = max($this->wordsArray);
if (is_array($this->wordsArray))
{
$return = ($returnType == "html" ? "" : ($returnType == "array" ? array() : ""));
foreach ($this->wordsArray as $word => $popularity)
{
$sizeRange = $this->getClassFromPercent(($popularity / $this->max) * 100);
if ($returnType == "array")
{
$return[$word]['word'] = $word;
$return[$word]['sizeRange'] = $sizeRange;
}
else if ($returnType == "html")
{
$return .= "<span class='word size{$sizeRange}'> {$word} </span>";
}
}
return $return;
}
}
}
?>