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run code in 150+ php & hhvm versions
Bugs & Features
<?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); } $words = ['una' => 1, 'dos' => 2, 'qweqwe' => 3]; var_dump(word_cloud($words));
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> string(151) "<div style="width: 400px"><span style="font-size: 48px; color: #0000aa;">dos</span> <span style="font-size: 96px; color: #0000ff;">qweqwe</span> </div>" [1]=> int(2) }
Output for 5.2.3 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/mE0VP on line 48
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected '[' in <b>/in/mE0VP</b> on line <b>48</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
<br /> <b>Parse error</b>: parse error, unexpected '[' in <b>/in/mE0VP</b> on line <b>48</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error in <b>/in/mE0VP</b> on line <b>48</b><br />
Process exited with code 255.