Online PHP editor | rfc for 5WXPo

@ 2014-01-09T00:17:01Z

<?php

function word_cloud($words, $div_size = 400) {

    $tags = 0;
    $cloud = "<div style=\"width: {$div_size}px\">";
    
    /* This word cloud generation algorithm was taken from the Wikipedia page on "word cloud"
       with some minor modifications to the implementation */
    
    /* Initialize some variables */
    $fmax = 96; /* Maximum font size */
    $fmin = 8; /* Minimum font size */
    $tmin = min($words); /* Frequency lower-bound */
    $tmax = max($words); /* Frequency upper-bound */

    foreach ($words as $word => $frequency) {
    
        if ($frequency > $tmin) {
            $font_size = floor(  ( $fmax * ($frequency - $tmin) ) / ( $tmax - $tmin )  );
            /* Define a color index based on the frequency of the word */
            $r = $g = 0; $b = floor( 255 * ($frequency / $tmax) );
            $color = '#' . sprintf('%02s', dechex($r)) . sprintf('%02s', dechex($g)) . sprintf('%02s', dechex($b));
        }
        else {
            $font_size = 0;
        }
        
        if ($font_size >= $fmin) {
            $cloud .= "<span style=\"font-size: {$font_size}px; color: $color;\">$word</span> ";
            $tags++;
        }
        
    }
    
    $cloud .= "</div>";
    
    return array($cloud, $tags);
    
}







$words = ['una' => 2, 'dos' => 2, 'qweqwe' => 3];


var_dump(word_cloud($words));

Output for git.master, git.master_jit, rfc.property-hooks: array(2) { [0]=> string(93) "<div style="width: 400px"><span style="font-size: 96px; color: #0000ff;">qweqwe</span> </div>" [1]=> int(1) }

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