Online PHP editor | perf for fqaEA

@ 2018-02-14T22:30:48Z

<?php

    /**
     * @param string $string The string from which the diacritic marks (¨, ´, ~, `, ^, etc.) will be removed.
     * @return string String without diacritic marks.
     */
    function removeDiacritics($string) {
        return transliterator_transliterate('Any-Latin;Latin-ASCII', $string);
    }
    
    /**
     * Ensures that $string is UTF-8 encoded.
     * @param string $string The string to ensure encoding
     * @return string The UTF-8 encoded string
     * @throws Exception If $string has no valid encoding
     */
    function ensureUTF8Encoding($string) {
        $encoding = mb_detect_encoding($string, 'UTF-8', true);
        if ($encoding === false) {
            $encoding = mb_detect_encoding($string, 'auto');
        }
        if ($encoding === false) {
            throw new Exception('No valid encoding detected');
        }
        return $encoding !== 'UTF-8' ? mb_convert_encoding($string, 'UTF-8', $encoding) : $string;
    }

    /**
     * @param string $string The string to get lower-cased
     * @return string Lower-cased and UTF-8 encoded value of $string
     */
    function lowerCase($string) {
        return mb_strtolower(ensureUTF8Encoding($string), 'UTF-8');
    }

    /**
     * Performs a words comparision between $s1 and $s2. This function counts every word only once, so 'hello hello'
     * would be 100% similar to 'hello'. Both strings will get converted to lowercase, with its diacritical marks
     * (´, ¨, ^, `, ~, etc.) stripped out. This behaviour is very much like a 'keywords search'.
     * @param string $s1 First string to compare
     * @param string $s2 Second string to compare
     * @param null|string[] $skipWords Value-only array of words that should'nt be taken into account when comparing $s1 and $s2
     * @param null|string[] $skipText Value-only array of text that should'nt be taken into account when comparing $s1 and $s2.
     * Please note that this text will be stripped from the end, start and middle parts of words.
     * @return float|int Percent of similarity between $s1 and $s2, where 1 represents 100% and 0 represents 0%
     */
    function compareWords($s1, $s2, $skipWords = [
        'en', 'de', 'del', 'los', 'la', 'in', 'from', 'the'
    ], $skipText = [
        '.', ',', ';', ':'
    ])
    {
        if ($s1 === null || $s2 === null) return 0;

        if ($skipText !== null && count($skipText) > 0) {
            $s1 = str_replace($skipText, '', $s1);
            $s2 = str_replace($skipText, '', $s2);
        }

        if ($skipWords !== null && count($skipWords) > 0) {
            $skipWords = array_map(function ($item) { return preg_quote($item, '/'); }, $skipWords);
            $skipWordsRegex = '/(?:(?<=\s)|^)(?:' . implode('|', $skipWords) . ')(?:(?=\s)|$)/';
            $s1 = preg_replace($skipWordsRegex, '', $s1);
            $s2 = preg_replace($skipWordsRegex, '', $s2);
        }

        $s1 = trim(lowerCase(preg_replace('/\s+/', ' ', removeDiacritics($s1))));
        $s2 = trim(lowerCase(preg_replace('/\s+/', ' ', removeDiacritics($s2))));

        if (strlen($s1) === 0 || strlen($s2) === 0) return 0;

        $s1Words = array_unique(explode(' ', $s1));
        $s2Words = array_unique(explode(' ', $s2));

        $s1WordsCount = count($s1Words);
        $s2WordsCount = count($s2Words);

        // make sure $s1Words is the smaller array, to have a smaller cycle
        if ($s1WordsCount > $s2WordsCount) {
            $temp = $s1Words;
            $s1Words = $s2Words;
            $s2Words = $temp;
        }

        $s2Words = array_flip($s2Words);

        $maxWords = max($s1WordsCount, $s2WordsCount);
        $matches = 0;

        foreach ($s1Words as $s1Word) {
            if (array_key_exists($s1Word, $s2Words)) $matches++;
        }

        return $matches / $maxWords;
    }

var_dump(compareWords('The tomato sauce.', 'tomato sauce'));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.3.6	0.006	0.045	22.08
8.3.5	0.010	0.053	21.69
8.3.4	0.004	0.028	22.46
8.3.3	0.014	0.017	22.59
8.3.2	0.007	0.011	23.56
8.3.1	0.003	0.013	27.28
8.3.0	0.004	0.014	23.55
8.2.18	0.010	0.048	22.22
8.2.17	0.007	0.024	22.96
8.2.16	0.003	0.027	23.71
8.2.15	0.007	0.010	24.18
8.2.14	0.010	0.007	24.66
8.2.13	0.000	0.016	26.16
8.2.12	0.006	0.010	25.74
8.2.11	0.007	0.011	23.02
8.2.10	0.000	0.025	21.84
8.2.9	0.006	0.016	22.55
8.2.8	0.003	0.017	21.75
8.2.7	0.003	0.017	21.80
8.2.6	0.012	0.015	21.55
8.2.5	0.000	0.020	22.03
8.2.4	0.007	0.013	25.90
8.2.3	0.003	0.016	22.96
8.2.2	0.003	0.016	21.81
8.2.1	0.007	0.013	21.82
8.2.0	0.000	0.019	22.07
8.1.27	0.007	0.010	25.81
8.1.26	0.003	0.013	26.35
8.1.25	0.004	0.012	28.09
8.1.24	0.008	0.012	23.20
8.1.23	0.007	0.016	23.09
8.1.22	0.003	0.016	21.41
8.1.21	0.004	0.018	21.36
8.1.20	0.003	0.017	21.38
8.1.19	0.007	0.013	21.10
8.1.18	0.003	0.017	21.38
8.1.17	0.003	0.017	22.59
8.1.16	0.003	0.016	22.58
8.1.15	0.000	0.020	23.84
8.1.14	0.003	0.016	21.60
8.1.13	0.004	0.015	22.58
8.1.12	0.004	0.015	21.61
8.1.11	0.006	0.014	21.52
8.1.10	0.010	0.010	21.48
8.1.9	0.003	0.019	21.39
8.1.8	0.003	0.023	21.50
8.1.7	0.009	0.012	21.46
8.1.6	0.000	0.021	21.67
8.1.5	0.003	0.017	21.52
8.1.4	0.003	0.016	21.58
8.1.3	0.004	0.018	21.80
8.1.2	0.006	0.015	21.73
8.1.1	0.003	0.016	21.68
8.1.0	0.000	0.021	21.60
8.0.30	0.000	0.020	21.77
8.0.29	0.000	0.021	20.75
8.0.28	0.000	0.019	22.00
8.0.27	0.003	0.016	21.05
8.0.26	0.012	0.012	22.08
8.0.25	0.007	0.011	20.82
8.0.24	0.003	0.016	20.80
8.0.23	0.009	0.009	20.87
8.0.22	0.004	0.022	20.86
8.0.21	0.006	0.013	20.73
8.0.20	0.003	0.016	20.98
8.0.19	0.000	0.020	20.96
8.0.18	0.007	0.014	20.80
8.0.17	0.011	0.011	20.79
8.0.16	0.004	0.016	20.96
8.0.15	0.009	0.012	20.74
8.0.14	0.007	0.014	20.82
8.0.13	0.000	0.007	13.57
8.0.12	0.007	0.014	20.79
8.0.11	0.003	0.017	20.93
8.0.10	0.000	0.020	20.88
8.0.9	0.003	0.017	20.89
8.0.8	0.013	0.024	21.00
8.0.7	0.007	0.014	20.77
8.0.6	0.003	0.019	21.05
8.0.5	0.003	0.017	20.92
8.0.3	0.010	0.025	21.41
8.0.2	0.013	0.028	21.12
8.0.1	0.006	0.013	20.95
8.0.0	0.010	0.031	20.55
7.4.33	0.002	0.002	15.55
7.4.32	0.004	0.014	20.66
7.4.30	0.000	0.019	20.50
7.4.29	0.003	0.016	20.60
7.4.28	0.003	0.017	20.62
7.4.27	0.003	0.016	20.64
7.4.26	0.000	0.020	20.61
7.4.25	0.000	0.022	20.52
7.4.24	0.000	0.019	20.58
7.4.23	0.000	0.019	20.75
7.4.22	0.003	0.016	20.66
7.4.21	0.016	0.020	20.66
7.4.20	0.006	0.012	20.69
7.4.16	0.012	0.026	20.39
7.4.15	0.013	0.032	20.42
7.4.14	0.016	0.032	20.49
7.4.13	0.023	0.037	20.63
7.4.12	0.014	0.032	20.51
7.4.11	0.019	0.019	20.61
7.4.10	0.013	0.026	20.48
7.4.9	0.016	0.025	20.58
7.4.8	0.006	0.035	20.56
7.4.7	0.013	0.044	20.78
7.4.6	0.016	0.048	20.58
7.4.5	0.004	0.026	20.61
7.4.4	0.011	0.029	20.50
7.4.0	0.000	0.033	18.99
7.3.33	0.000	0.005	13.64
7.3.32	0.000	0.006	13.60
7.3.31	0.003	0.016	20.30
7.3.30	0.006	0.012	20.53
7.3.29	0.012	0.034	20.46
7.3.28	0.014	0.032	20.40
7.3.27	0.010	0.030	20.69
7.3.26	0.015	0.032	20.56
7.3.24	0.011	0.029	20.48
7.3.23	0.012	0.025	20.60
7.3.21	0.013	0.037	20.64
7.3.20	0.016	0.026	20.47
7.3.19	0.006	0.033	20.70
7.3.18	0.018	0.021	20.75
7.3.17	0.006	0.032	20.52
7.3.16	0.006	0.034	20.59
7.3.12	0.010	0.020	19.11
7.3.11	0.000	0.027	19.11
7.3.10	0.009	0.013	18.84
7.3.9	0.007	0.020	18.80
7.3.8	0.004	0.022	18.83
7.3.7	0.003	0.021	19.00
7.3.6	0.006	0.023	18.83
7.3.5	0.007	0.021	19.09
7.3.4	0.007	0.020	18.75
7.3.3	0.000	0.024	19.10
7.3.2	0.013	0.010	20.67
7.3.1	0.008	0.022	20.74
7.3.0	0.008	0.021	20.59
7.2.33	0.012	0.029	20.80
7.2.32	0.010	0.030	20.88
7.2.31	0.014	0.027	20.72
7.2.30	0.018	0.031	20.83
7.2.29	0.016	0.042	20.72
7.2.24	0.010	0.017	19.05
7.2.23	0.003	0.023	19.28
7.2.22	0.007	0.018	19.20
7.2.21	0.004	0.022	19.14
7.2.20	0.015	0.012	19.27
7.2.19	0.000	0.023	19.06
7.2.18	0.004	0.025	19.18
7.2.17	0.006	0.025	19.09
7.2.16	0.007	0.020	19.09
7.2.15	0.000	0.031	20.96
7.2.14	0.007	0.022	20.96
7.2.13	0.007	0.021	20.74
7.2.12	0.005	0.023	20.69
7.2.11	0.008	0.022	20.81
7.2.10	0.005	0.023	20.90
7.2.9	0.010	0.019	20.79
7.2.8	0.003	0.024	20.77
7.2.7	0.006	0.022	20.81
7.2.6	0.008	0.019	20.80
7.2.5	0.010	0.019	20.94
7.2.4	0.009	0.020	20.87
7.2.3	0.009	0.019	20.95
7.2.2	0.006	0.027	21.50
7.2.1	0.009	0.025	21.40
7.2.0	0.008	0.026	21.44
7.1.33	0.000	0.024	19.36
7.1.32	0.007	0.020	19.49
7.1.31	0.000	0.024	19.50
7.1.30	0.007	0.027	19.51
7.1.29	0.003	0.024	19.84
7.1.28	0.006	0.019	19.68
7.1.27	0.009	0.018	19.70
7.1.26	0.000	0.021	19.67
7.1.25	0.007	0.022	19.76
7.1.20	0.003	0.023	19.61
7.1.14	0.010	0.045	22.02
7.1.13	0.010	0.031	22.34
7.1.12	0.009	0.038	22.00
7.1.11	0.006	0.035	22.62
7.1.10	0.010	0.033	22.38
7.1.9	0.015	0.044	22.33
7.1.8	0.015	0.028	22.33
7.1.7	0.009	0.035	21.63
7.1.6	0.026	0.036	39.32
7.1.5	0.028	0.042	38.75
7.1.4	0.032	0.054	38.48
7.1.3	0.016	0.044	38.44
7.1.2	0.032	0.032	38.54
7.1.1	0.008	0.032	20.78
7.1.0	0.007	0.039	20.69

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