<?
 
    /*
    @wordCloud
    Author: Derek Harvey
    Website: www.lotsofcode.com
 
    @Description
    PHP Tag Cloud Class, a nice and simple way to create a php tag cloud, a database and non-database solution.
    */
 
    class wordCloud
    {
    var $wordsArray = array();
    var $refsArray = 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, $ref = 0)
    {
    if (array_key_exists($word, $this->wordsArray))
    $this->wordsArray[$word] += $value;
    else
    $this->wordsArray[$word] = $value;
    $this->refsArray[$word] = $ref;
 
    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.
    *
    * @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]['ref'] = $this->refsArray[$word];
    $return[$word]['sizeRange'] = $sizeRange;
    if ($currentColour)
        $return[$word]['randomColour'] = $currentColour;
    }
    else if ($returnType == "html")
    {
    $return .= "<span class='word size{$sizeRange}'> {$word} </span>";
    }
    }
    return $return;
    }
    }
    }
    ?>