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run code in 300+ PHP versions simultaneously

@ 2014-11-26T15:10:04Z

<?php

function sortKeywords(array $phrases) {
        if (empty($phrases)) {
            return $phrases;
        }

        // group by word count
        $byWordCount = array();
        foreach ($phrases as $kw) {
            $kw = preg_replace('/\b+/', " ", $kw);
            $wordCount = count(explode(" ", $kw));

            if (!array_key_exists($wordCount, $byWordCount)) {
                $byWordCount[$wordCount] = array();
            }

            $byWordCount[$wordCount][] = $kw;
        }

        // within every group sort by average word length
        $sortByWordLen = function ($a, $b) {
            $getAverageWordLen = function (array $words) {
                $totalLen = 0;
                foreach ($words as $w) {
                    $totalLen += strlen($w);
                }

                return $totalLen / (count($words));
            };

            $wordsA = explode(" ", $a);
            $wordsB = explode(" ", $b);

            $averageLenA = $getAverageWordLen($wordsA);
            $averageLenB = $getAverageWordLen($wordsB);

            if ($averageLenA < $averageLenB) {
                return 1;
            } else if ($averageLenA > $averageLenB) {
                return -1;
            }

            return 0;
        };

        // sort keys (sentence lengths) DESC
        $keys = array_keys($byWordCount);
        sort($keys);
        $sortedLengths = array_reverse($keys);

        // built final array sorted by 1) sentence length DESC 2) averaged word length DESC
        $sortedKeywords = array();
        foreach ($sortedLengths as $length) {
            $phrases = $byWordCount[$length];
            usort($phrases, $sortByWordLen);

            $sortedKeywords = array_merge($sortedKeywords, $phrases);
        }

        return $sortedKeywords;
}

var_dump(sortKeywords(array(
    'foo bar',
    'foobar',
    'foofoo bar'
    'foo',
    'foofoo barbar'
)));

Output for 5.4.0 - 5.4.35: Parse error: syntax error, unexpected ''foo'' (T_CONSTANT_ENCAPSED_STRING), expecting ')' in /in/srk9H on line 68
Process exited with code 255.
Output for 5.3.0 - 5.3.29: Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting ')' in /in/srk9H on line 68
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_FUNCTION in /in/srk9H on line 22
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/srk9H on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/srk9H on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/srk9H on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `')'' in /in/srk9H on line 3
Process exited with code 255.

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