Online PHP editor | perf for g8hIn

@ 2014-02-28T16:42:03Z

<?php

class Punycode
{
    const BASE = 36;
    const T_MIN = 1;
    const T_MAX = 26;
    const SKEW = 38;
    const DAMP = 700;
    const INITIAL_BIAS = 72;
    const INITIAL_N = 128;

    private function decodeUtf8Character($input, $i, &$codePoint = null)
    {
        $input = array_values(unpack('C*', substr($input, $i, 4)));
        $count = count($input);

        switch (true) {
            case $count >= 2 && ($input[0] & 0xE0) === 0xC0 && ($input[1] & 0xC0) === 0x80:
                $codePoint = (($input[0] & 0x1F) << 6) | ($input[1] & 0x3F);
                return 2;

            case $count >= 3 && ($input[0] & 0xF0) === 0xE0 && (($input[1] ^ 0x40) & ($input[2] ^ 0x40) & 0xC0) === 0xC0:
                $codePoint = (($input[0] & 0x0F) << 12) | (($input[1] & 0x3F) << 6) | ($input[2] & 0x3F);
                return 3;

            case $count >= 4 && ($input[0] & 0xF8) === 0xF0 && (($input[1] ^ 0x40) & ($input[2] ^ 0x40) & ($input[3] ^ 0x40) & 0xC0) === 0xC0:
                $codePoint = (($input[0] & 0x07) << 18) | (($input[1] & 0x3F) << 12) | (($input[2] & 0x3F) << 6) | ($input[3] & 0x3F);
                return 4;
        }

        return 0;
    }

    private function encodeUtf8CodePoint($codePoint)
    {
        switch (true) {
            case $codePoint < 0x80:
                return pack('C*', $codePoint & 0x7F);

            case $codePoint < 0x0800:
                return pack('C*', (($codePoint & 0x07C0) >> 6) | 0xC0, ($codePoint & 0x3F) | 0x80);

            case $codePoint < 0x010000:
                return pack('C*', (($codePoint & 0xF000) >> 12) | 0xE0, (($codePoint & 0x0FC0) >> 6) | 0x80, ($codePoint & 0x3F) | 0x80);

            case $codePoint < 0x110000:
                return pack('C*', (($codePoint & 0x1C0000) >> 18) | 0xF0, (($codePoint & 0x03F000) >> 12) | 0x80, (($codePoint & 0x0FC0) >> 6) | 0x80, ($codePoint & 0x3F) | 0x80);
        }

        return false;
    }

    private function isDnsLabelChar($charCode)
    {
        return ($charCode >= 0x61 && $charCode <= 0x7A)  // lower-case letter
            || ($charCode >= 0x30 && $charCode <= 0x39)  // digit
            || $charCode === 0x2D                        // -
            || ($charCode >= 0x41 && $charCode <= 0x5A); // upper-case letter;
    }

    private function isPrintableLatin1Char($charCode)
    {
        return $charCode >= 0xA0;
    }

    private function getEncodingParts($input, &$output = [], &$nonBasicChars = [])
    {
        $isUtf8 = true;

        for ($i = $p = 0, $l = strlen($input); $i < $l; $p++) {
            $charCode = ord($input[$i]);

            if ($charCode & 0x80) {
                if ($isUtf8) {
                    if ($len = $this->decodeUtf8Character($input, $i, $codePoint)) {
                        $nonBasicChars[] = [$p, $codePoint, substr($input, $i, $len), $len]; // undecoded data is stored for UTF-8 chars to facilitate conversion to latin1 if necessary
                        $i += $len;
                    } else {
                        // not a valid UTF-8 code point, convert $nonBasicChars to latin1 representation
                        if (!$this->isPrintableLatin1Char($charCode)) {
                            return false;
                        }

                        $isUtf8 = false;

                        if (!empty($nonBasicChars)) {
                            $offset = 0;

                            for ($j = 0, $l = count($nonBasicChars); $j < $l; $j++) {
                                $base = $nonBasicChars[$j][0];
                                $nonBasicChars[$j][0] += $offset;
                                $nonBasicChars[$j][1] = ord($nonBasicChars[$j][2][0]);

                                for ($k = 1; $k < $nonBasicChars[$j][3]; $k++) {
                                    $nonBasicChars[] = [$base + ++$offset, ord($nonBasicChars[$j][2][$k])];
                                }
                            }

                            $nonBasicChars[] = [$i++, $charCode];

                            usort($nonBasicChars, function($a, $b) {
                                return $a[0] - $b[0];
                            });
                        } else {
                            $nonBasicChars[] = [$i++, $charCode];
                        }
                    }
                } else if ($this->isPrintableLatin1Char($charCode)) {
                    $nonBasicChars[] = [$i++, $charCode];
                } else {
                    return false;
                }
            } else if ($this->isDnsLabelChar($charCode)) {
                $output[] = $input[$i++];
            } else {
                return false;
            }
        }

        return true;
    }

    private function adaptBias($delta, $numPoints, $first)
    {
        $delta = $first ? $delta / self::DAMP : $delta / 2;
        $delta += $delta / $numPoints;

        $div = self::BASE - self::T_MIN;
        $end = ($div * self::T_MAX) / 2;
        for ($k = 0; $delta > $end; $k += self::BASE) {
            $delta = (int)($delta / $div);
        }

        return $k + (($div + 1) * $delta) / ($delta + self::SKEW);
    }

    private function decodeDigit($digits, $index)
    {
        if (isset($digits[$index])) {
            $codePoint = ord($digits[$index]);

            if ($codePoint >= 0x61 && $codePoint <= 0x7A) {
                return $codePoint - 97;
            } else if ($codePoint >= 0x30 && $codePoint <= 0x39) {
                return $codePoint - 22;
            }
        }

        return false;
    }

    private function decodeLabel($input)
    {
        if (substr($input, 0, 4) !== 'xn--') {
            return $input;
        }
        $input = substr($input, 4);

        if (false !== $nonBasicCharsStart = strrpos($input, '-')) {
            $output = str_split(substr($input, 0, $nonBasicCharsStart), 1);
            $nonBasicChars = substr($input, $nonBasicCharsStart + 1);
        } else {
            $output = [];
            $nonBasicChars = $input;
        }

        $n = self::INITIAL_N;
        $i = 0;
        $bias = self::INITIAL_BIAS;

        for ($j = 0, $l = strlen($nonBasicChars); $j < $l; $i++) {
            $oldi = $i;
            $w = 1;

            for ($k = self::BASE;; $k+= self::BASE) {
                if (false === $digit = $this->decodeDigit($nonBasicChars, $j++)) {
                    return false;
                }

                $i += $digit * $w;

                if ($k <= $bias) {
                    $t = self::T_MIN;
                } else if ($k >= $bias + self::T_MAX) {
                    $t = self::T_MAX;
                } else {
                    $t = $k - $bias;
                }

                if ($digit < $t) {
                    break;
                }

                $w *= (int) (self::BASE - $t);
            }

            $c = count($output) + 1;

            $bias = $this->adaptBias($i - $oldi, $c, $oldi === 0);
            $n += (int)($i / $c);
            $i %= $c;

            array_splice($output, $i, 0, [$this->encodeUtf8CodePoint($n)]);
        }

        return implode('', $output);
    }

    private function encodeLabel($input)
    {
        if (!$this->getEncodingParts($input, $output, $nonBasicChars)) {
            return false;
        }

        if (empty($nonBasicChars)) {
            return $input;
        }

        $output = 'xn--' . $output;
    }

    public function decode($input)
    {
        $output = [];

        foreach (explode('.', strtolower($input)) as $label) {
            if (false === $label = $this->decodeLabel($label)) {
                return false;
            }

            $output[] = $label;
        }

        return implode('.', $output);
    }

    public function encode($input)
    {
        $output = [];

        foreach (explode('.', strtolower($input)) as $label) {
            if (false === $label = $this->encodeLabel($label)) {
                return false;
            }

            $output[] = $label;
        }

        return implode('.', $output);
    }
}

echo (new Punycode)->decode("xn---with-SUPER-MONKEYS-pc58ag80a8qai00g7n9n");

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	0.013	0.006	16.75
8.3.5	0.009	0.007	21.99
8.3.4	0.009	0.006	18.81
8.3.3	0.016	0.006	19.13
8.3.2	0.008	0.000	20.34
8.3.1	0.004	0.004	22.04
8.3.0	0.000	0.008	22.45
8.2.18	0.000	0.015	18.41
8.2.17	0.008	0.008	22.96
8.2.16	0.011	0.004	19.46
8.2.15	0.008	0.000	24.18
8.2.14	0.016	0.003	24.66
8.2.13	0.004	0.004	26.16
8.2.12	0.007	0.003	17.93
8.2.11	0.010	0.000	19.30
8.2.10	0.004	0.010	18.09
8.2.9	0.000	0.009	19.43
8.2.8	0.005	0.003	19.34
8.2.7	0.006	0.003	17.62
8.2.6	0.000	0.008	18.15
8.2.5	0.003	0.005	18.07
8.2.4	0.000	0.009	18.47
8.2.3	0.000	0.008	18.28
8.2.2	0.000	0.008	17.88
8.2.1	0.005	0.003	17.83
8.2.0	0.000	0.008	17.84
8.1.28	0.014	0.007	25.92
8.1.27	0.004	0.004	20.15
8.1.26	0.000	0.007	26.35
8.1.25	0.008	0.000	28.09
8.1.24	0.006	0.003	23.80
8.1.23	0.009	0.003	21.04
8.1.22	0.004	0.004	17.77
8.1.21	0.000	0.008	18.77
8.1.20	0.007	0.003	17.35
8.1.19	0.000	0.008	17.65
8.1.18	0.000	0.008	18.65
8.1.17	0.008	0.000	18.59
8.1.16	0.003	0.006	22.25
8.1.15	0.000	0.007	18.75
8.1.14	0.004	0.004	17.57
8.1.13	0.004	0.004	17.88
8.1.12	0.000	0.008	17.48
8.1.11	0.004	0.004	17.41
8.1.10	0.007	0.000	17.49
8.1.9	0.004	0.004	17.46
8.1.8	0.004	0.004	17.57
8.1.7	0.005	0.003	17.46
8.1.6	0.005	0.005	17.69
8.1.5	0.003	0.006	17.62
8.1.4	0.004	0.004	17.64
8.1.3	0.003	0.006	17.76
8.1.2	0.004	0.004	17.61
8.1.1	0.004	0.004	17.59
8.1.0	0.000	0.008	17.66
8.0.30	0.005	0.003	18.77
8.0.29	0.004	0.004	17.30
8.0.28	0.003	0.003	18.58
8.0.27	0.000	0.008	17.39
8.0.26	0.007	0.000	16.99
8.0.25	0.000	0.007	17.10
8.0.24	0.004	0.004	17.08
8.0.23	0.000	0.008	16.96
8.0.22	0.003	0.003	16.96
8.0.21	0.004	0.004	17.06
8.0.20	0.005	0.003	17.15
8.0.19	0.004	0.004	17.20
8.0.18	0.002	0.005	17.08
8.0.17	0.000	0.008	17.14
8.0.16	0.005	0.003	17.14
8.0.15	0.004	0.004	17.08
8.0.14	0.006	0.003	17.07
8.0.13	0.003	0.003	13.52
8.0.12	0.005	0.003	16.96
8.0.11	0.004	0.004	17.07
8.0.10	0.003	0.007	16.97
8.0.9	0.004	0.004	16.90
8.0.8	0.014	0.007	17.12
8.0.7	0.004	0.004	16.85
8.0.6	0.005	0.003	16.87
8.0.5	0.000	0.008	17.00
8.0.3	0.015	0.004	17.22
8.0.2	0.010	0.013	17.40
8.0.1	0.007	0.000	17.30
8.0.0	0.003	0.015	16.87
7.4.33	0.002	0.002	15.00
7.4.32	0.000	0.007	16.68
7.4.30	0.006	0.000	16.61
7.4.29	0.009	0.003	16.70
7.4.28	0.003	0.003	16.55
7.4.27	0.004	0.004	16.57
7.4.26	0.000	0.007	16.75
7.4.25	0.004	0.004	16.52
7.4.24	0.002	0.005	16.61
7.4.23	0.005	0.003	16.80
7.4.22	0.007	0.010	16.70
7.4.21	0.008	0.008	16.75
7.4.20	0.004	0.004	16.77
7.4.19	0.000	0.007	16.80
7.4.16	0.007	0.011	16.71
7.4.15	0.004	0.014	17.40
7.4.14	0.013	0.008	17.86
7.4.13	0.013	0.008	16.59
7.4.12	0.014	0.003	16.55
7.4.11	0.016	0.003	16.71
7.4.10	0.011	0.011	16.44
7.4.9	0.004	0.014	16.64
7.4.8	0.006	0.016	19.39
7.4.7	0.010	0.006	16.59
7.4.6	0.010	0.009	16.59
7.4.5	0.000	0.004	16.83
7.4.4	0.012	0.003	22.77
7.4.3	0.007	0.010	16.68
7.4.0	0.004	0.008	15.26
7.3.33	0.000	0.006	13.38
7.3.32	0.002	0.005	13.36
7.3.31	0.000	0.007	16.51
7.3.30	0.003	0.005	16.57
7.3.29	0.014	0.007	16.46
7.3.28	0.008	0.007	16.58
7.3.27	0.010	0.007	17.40
7.3.26	0.000	0.022	16.59
7.3.25	0.012	0.009	16.56
7.3.24	0.009	0.009	16.69
7.3.23	0.011	0.007	16.64
7.3.21	0.009	0.013	16.45
7.3.20	0.013	0.010	19.39
7.3.19	0.017	0.002	16.64
7.3.18	0.010	0.007	16.54
7.3.17	0.007	0.010	16.63
7.3.16	0.010	0.007	16.49
7.3.12	0.007	0.007	15.15
7.3.1	0.013	0.003	16.65
7.3.0	0.006	0.009	16.61
7.2.33	0.009	0.009	16.77
7.2.32	0.006	0.012	16.59
7.2.31	0.008	0.011	16.55
7.2.30	0.009	0.008	16.82
7.2.29	0.014	0.003	16.71
7.2.13	0.012	0.003	16.68
7.2.12	0.004	0.011	17.02
7.2.11	0.003	0.014	16.77
7.2.10	0.010	0.000	16.80
7.2.9	0.006	0.010	17.01
7.2.8	0.010	0.003	17.01
7.2.7	0.003	0.013	16.92
7.2.6	0.007	0.007	16.79
7.2.5	0.009	0.006	17.07
7.2.4	0.004	0.009	16.75
7.2.3	0.003	0.013	16.63
7.2.2	0.006	0.009	17.03
7.2.1	0.009	0.006	16.90
7.2.0	0.002	0.012	18.21
7.1.25	0.007	0.007	15.85
7.1.10	0.004	0.007	18.15
7.1.7	0.000	0.007	17.01
7.1.6	0.007	0.014	19.82
7.1.5	0.003	0.020	16.98
7.1.0	0.010	0.040	22.27
7.0.20	0.003	0.007	16.76
7.0.14	0.000	0.077	22.13
7.0.11	0.003	0.087	21.84
7.0.10	0.010	0.067	21.71
7.0.9	0.000	0.087	21.73
7.0.8	0.007	0.077	21.79
7.0.7	0.007	0.077	21.66
7.0.6	0.003	0.050	21.78
7.0.5	0.003	0.090	22.12
7.0.4	0.003	0.073	19.99
7.0.3	0.003	0.070	20.10
7.0.2	0.000	0.093	20.18
7.0.1	0.013	0.080	20.18
7.0.0	0.007	0.090	20.16
5.6.28	0.003	0.073	21.06
5.6.26	0.007	0.047	20.70
5.6.25	0.010	0.043	20.64
5.6.24	0.003	0.067	20.59
5.6.23	0.010	0.077	20.59
5.6.22	0.000	0.083	20.48
5.6.21	0.003	0.080	20.64
5.6.20	0.007	0.080	21.01
5.6.19	0.007	0.047	21.07
5.6.18	0.010	0.077	20.94
5.6.17	0.003	0.083	21.10
5.6.16	0.003	0.083	21.11
5.6.15	0.010	0.070	21.14
5.6.14	0.000	0.063	21.00
5.6.13	0.007	0.080	21.07
5.6.12	0.007	0.067	21.13
5.6.11	0.003	0.050	21.10
5.6.10	0.003	0.063	21.27
5.6.9	0.003	0.087	20.98
5.6.8	0.010	0.077	20.54
5.6.7	0.013	0.070	20.32
5.6.6	0.003	0.080	20.53
5.6.5	0.000	0.057	20.43
5.6.4	0.010	0.077	20.52
5.6.3	0.010	0.070	20.33
5.6.2	0.013	0.063	20.48
5.6.1	0.003	0.050	20.66
5.6.0	0.010	0.067	20.64
5.5.38	0.003	0.050	20.31
5.5.37	0.000	0.077	20.40
5.5.36	0.007	0.043	20.58
5.5.35	0.007	0.073	20.46
5.5.34	0.007	0.067	20.84
5.5.33	0.010	0.073	21.06
5.5.32	0.003	0.077	20.93
5.5.31	0.010	0.073	21.01
5.5.30	0.000	0.083	21.05
5.5.29	0.010	0.043	21.01
5.5.28	0.010	0.067	20.72
5.5.27	0.007	0.047	21.03
5.5.26	0.003	0.070	20.91
5.5.25	0.003	0.077	20.70
5.5.24	0.003	0.047	20.44
5.5.23	0.010	0.070	20.43
5.5.22	0.003	0.050	20.17
5.5.21	0.000	0.080	20.30
5.5.20	0.003	0.077	20.33
5.5.19	0.003	0.077	20.27
5.5.18	0.003	0.047	20.27
5.5.16	0.003	0.067	20.24
5.5.15	0.007	0.080	20.18
5.5.14	0.000	0.063	20.25
5.5.13	0.007	0.070	20.40
5.5.12	0.003	0.070	20.27
5.5.11	0.010	0.073	20.25
5.5.10	0.003	0.083	20.19
5.5.9	0.000	0.070	20.07
5.5.8	0.010	0.070	20.27
5.5.7	0.003	0.083	20.26
5.5.6	0.000	0.080	19.98
5.5.5	0.007	0.070	20.06
5.5.4	0.007	0.070	20.03
5.5.3	0.003	0.053	20.16
5.5.2	0.010	0.073	20.11
5.5.1	0.007	0.080	20.18
5.5.0	0.010	0.073	20.13
5.4.45	0.010	0.070	19.28
5.4.44	0.010	0.073	19.28
5.4.43	0.000	0.077	19.30
5.4.42	0.003	0.053	19.36
5.4.41	0.003	0.070	19.44
5.4.40	0.000	0.073	19.18
5.4.39	0.003	0.067	19.31
5.4.38	0.003	0.047	19.23
5.4.37	0.007	0.073	19.17
5.4.36	0.003	0.070	19.01
5.4.35	0.003	0.070	18.96
5.4.34	0.000	0.050	19.04
5.4.32	0.007	0.080	19.01
5.4.31	0.013	0.067	19.00
5.4.30	0.003	0.073	19.00
5.4.29	0.007	0.077	19.19
5.4.28	0.003	0.077	19.22
5.4.27	0.003	0.073	19.18
5.4.26	0.007	0.073	19.03
5.4.25	0.013	0.070	19.08
5.4.24	0.003	0.073	19.03
5.4.23	0.003	0.047	18.99
5.4.22	0.007	0.073	18.98
5.4.21	0.010	0.073	19.19
5.4.20	0.007	0.077	19.03
5.4.19	0.007	0.057	18.98
5.4.18	0.007	0.073	19.13
5.4.17	0.010	0.067	19.27
5.4.16	0.000	0.077	18.99
5.4.15	0.000	0.040	18.96
5.4.14	0.007	0.070	16.38
5.4.13	0.007	0.067	16.34
5.4.12	0.003	0.043	16.44
5.4.11	0.003	0.070	16.52
5.4.10	0.007	0.067	16.60
5.4.9	0.003	0.070	16.52
5.4.8	0.000	0.070	16.46
5.4.7	0.000	0.067	16.54
5.4.6	0.003	0.047	16.71
5.4.5	0.003	0.033	16.57
5.4.4	0.000	0.037	16.53
5.4.3	0.003	0.033	16.46
5.4.2	0.003	0.033	16.59
5.4.1	0.000	0.037	16.51
5.4.0	0.007	0.030	15.98
5.3.29	0.003	0.080	14.84
5.3.28	0.007	0.060	14.63
5.3.27	0.007	0.073	14.64
5.3.26	0.003	0.080	14.65
5.3.25	0.000	0.060	14.67
5.3.24	0.003	0.077	14.77
5.3.23	0.000	0.073	14.86
5.3.22	0.000	0.070	14.73
5.3.21	0.003	0.040	14.68
5.3.20	0.010	0.067	14.61
5.3.19	0.003	0.060	14.46
5.3.18	0.000	0.077	14.69
5.3.17	0.000	0.053	14.62
5.3.16	0.003	0.040	14.59
5.3.15	0.003	0.033	14.73
5.3.14	0.000	0.037	14.61
5.3.13	0.000	0.037	14.60
5.3.12	0.000	0.037	14.67
5.3.11	0.003	0.037	14.59
5.3.10	0.003	0.040	14.04
5.3.9	0.000	0.040	14.29
5.3.8	0.003	0.040	14.05
5.3.7	0.003	0.037	14.05
5.3.6	0.000	0.037	14.11
5.3.5	0.000	0.033	13.96
5.3.4	0.003	0.033	14.01
5.3.3	0.003	0.063	14.02
5.3.2	0.003	0.073	13.74
5.3.1	0.000	0.033	13.84
5.3.0	0.010	0.050	13.70

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