Online PHP editor | perf for bkHmm

@ 2015-12-01T08:30:22Z

<?php

class StringStreamWrapper {
    const PROTOCOL = "stringstream";

    private $stringstream;
    private $position;
    private $stringlength;

    public function stream_open($path, $mode, $options, &$opened_path) {
        $contextOptions = stream_context_get_options($this->context);
        if (!isset($contextOptions[self::PROTOCOL]['string']))
            return false;

        $this->position = 0;

        // this is our stream!
        $this->stringstream = $contextOptions[self::PROTOCOL]['string'];

        $this->stringlength = strlen($this->stringstream);

        return true;
    }

    public function stream_read($len) {
        $data = substr($this->stringstream, $this->position, $len);
        $this->position += strlen($data);
        return $data;
    }

    public function stream_write($data){
        $l = strlen($data);
        $this->stringstream = substr($this->stringstream, 0, $this->position) . $data . substr($this->stringstream, $this->position += $l);
        $this->stringlength = strlen($this->stringstream);
        return $l;
    }

    public function stream_seek($offset, $whence = SEEK_SET) {
        if ($whence == SEEK_CUR) {
            $this->position += $offset;
        }
        else if ($whence == SEEK_END) {
            $this->position = $this->stringlength + $offset;
        }
        else {
            $this->position = $offset;
        }
        return true;
    }

    public function stream_tell() {
        return $this->position;
    }

    public function stream_eof() {
        return ($this->position >= $this->stringlength);
    }

    public function stream_stat() {
        return array(
            7               => $this->stringlength,
            'size'          => $this->stringlength,
        );
    }

    static public function Open($string) {
        $context = stream_context_create(array(self::PROTOCOL => array('string' => &$string)));
        return fopen(self::PROTOCOL . "://",'r', false, $context);
    }
}
stream_wrapper_register(StringStreamWrapper::PROTOCOL, "StringStreamWrapper");

class replace_nullchar_filter extends php_user_filter {
    function filter($in, $out, &$consumed, $closing) {
        while ($bucket = stream_bucket_make_writeable($in)) {
            $bucket->data = str_replace("\0", "", $bucket->data);
            $consumed += $bucket->datalen;
            stream_bucket_append($out, $bucket);
        }
        return PSFS_PASS_ON;
    }
}
stream_filter_register('replacenullchar', 'replace_nullchar_filter');


class StringStreamWrapperFixed {
    public static function bug68532fixed() {
        if (defined('BUG68532FIXED'))
            return BUG68532FIXED;
            return version_compare(PHP_VERSION, '5.6.5', '>=') ||
            (version_compare(PHP_VERSION, '5.5.21', '>=') && version_compare(PHP_VERSION, '5.6.0', '<'));
    }

    public static function Open($string) {
        ZLog::Write(LOGLEVEL_DEBUG, "StringStreamWrapper::Open(): len = ".strlen($string));
        if (self::bug68532fixed()) {
            $stream = fopen('php://temp', 'r+');
        } else {
            $stream = tmpfile();
        }
        fwrite($stream, $string);
        rewind($stream);
        return $stream;
    }
}


#######################################
$testString = 'test';

echo "base64_encode = " . base64_encode($testString).PHP_EOL;

#######################################
$stream = fopen('php://memory','r+');
fwrite($stream, $testString);
rewind($stream);
stream_filter_append($stream, 'convert.base64-encode');
echo "memoryStream 1 = " . stream_get_contents($stream).PHP_EOL;

#######################################
$stream = fopen('php://memory','r+');
fwrite($stream, $testString);
rewind($stream);
stream_filter_append($stream, 'replacenullchar');
stream_filter_append($stream, 'convert.base64-encode');
echo "memoryStream 2 = " . stream_get_contents($stream).PHP_EOL;

#######################################
$stream = StringStreamWrapper::Open($testString);
stream_filter_append($stream, 'convert.base64-encode');
echo "StringStreamWrapper 1 = " . stream_get_contents($stream).PHP_EOL;

#######################################
$stream = StringStreamWrapper::Open($testString);
stream_filter_append($stream, 'replacenullchar');
stream_filter_append($stream, 'convert.base64-encode');
echo "StringStreamWrapper 2 = " . stream_get_contents($stream).PHP_EOL;

#######################################
$stream = StringStreamWrapperFixed::Open($testString);
stream_filter_append($stream, 'convert.base64-encode');
echo "StringStreamWrapperFixed 1 = " . stream_get_contents($stream).PHP_EOL;

#######################################
$stream = StringStreamWrapperFixed::Open($testString);
stream_filter_append($stream, 'replacenullchar');
stream_filter_append($stream, 'convert.base64-encode');
echo "StringStreamWrapperFixed 2 = " . stream_get_contents($stream).PHP_EOL;

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)
8.3.7	0.016	0.006	16.75
8.3.6	0.011	0.004	17.00
8.3.5	0.005	0.013	21.26
8.3.4	0.011	0.007	18.88
8.3.3	0.012	0.003	18.82
8.3.2	0.004	0.004	20.14
8.3.1	0.008	0.000	23.52
8.3.0	0.008	0.000	19.91
8.2.18	0.004	0.011	16.75
8.2.17	0.007	0.010	22.96
8.2.16	0.003	0.010	20.47
8.2.15	0.004	0.004	24.18
8.2.14	0.007	0.000	24.66
8.2.13	0.003	0.005	20.97
8.2.12	0.000	0.008	26.35
8.2.11	0.005	0.005	20.92
8.2.10	0.007	0.004	18.03
8.2.9	0.005	0.003	19.40
8.2.8	0.000	0.009	17.97
8.2.7	0.005	0.003	17.59
8.2.6	0.000	0.008	17.93
8.2.5	0.004	0.004	18.07
8.2.4	0.000	0.008	21.11
8.2.3	0.000	0.007	20.68
8.2.2	0.000	0.008	17.75
8.2.1	0.004	0.004	18.16
8.2.0	0.004	0.004	18.12
8.1.28	0.004	0.014	25.92
8.1.27	0.008	0.008	23.99
8.1.26	0.000	0.008	26.35
8.1.25	0.004	0.004	28.09
8.1.24	0.006	0.003	23.84
8.1.23	0.004	0.008	17.79
8.1.22	0.006	0.003	17.74
8.1.21	0.003	0.006	18.77
8.1.20	0.009	0.000	17.37
8.1.19	0.003	0.005	17.25
8.1.18	0.003	0.005	18.10
8.1.17	0.000	0.008	18.66
8.1.16	0.000	0.007	20.93
8.1.15	0.004	0.004	18.99
8.1.14	0.005	0.003	19.67
8.1.13	0.000	0.007	17.75
8.1.12	0.004	0.004	17.43
8.1.11	0.000	0.008	17.46
8.1.10	0.003	0.006	17.59
8.1.9	0.004	0.004	17.38
8.1.8	0.004	0.004	17.56
8.1.7	0.006	0.003	17.36
8.1.6	0.000	0.008	17.61
8.1.5	0.006	0.003	17.59
8.1.4	0.000	0.009	17.54
8.1.3	0.000	0.009	17.69
8.1.2	0.004	0.004	17.70
8.1.1	0.004	0.004	17.50
8.1.0	0.003	0.005	17.46
8.0.30	0.000	0.007	18.77
8.0.29	0.007	0.000	17.00
8.0.28	0.000	0.007	18.56
8.0.27	0.007	0.000	17.37
8.0.26	0.000	0.007	17.48
8.0.25	0.003	0.003	17.18
8.0.24	0.005	0.003	17.02
8.0.23	0.003	0.003	17.15
8.0.22	0.005	0.003	16.93
8.0.21	0.004	0.004	17.06
8.0.20	0.005	0.003	17.13
8.0.19	0.004	0.004	17.14
8.0.18	0.003	0.005	16.97
8.0.17	0.000	0.008	17.11
8.0.16	0.000	0.008	16.93
8.0.15	0.004	0.004	17.05
8.0.14	0.004	0.004	17.00
8.0.13	0.000	0.006	13.45
8.0.12	0.004	0.004	17.07
8.0.11	0.000	0.007	17.01
8.0.10	0.004	0.004	17.13
8.0.9	0.002	0.005	17.13
8.0.8	0.006	0.010	16.99
8.0.7	0.005	0.003	16.93
8.0.6	0.008	0.000	17.07
8.0.5	0.000	0.008	16.98
8.0.3	0.013	0.005	17.09
8.0.2	0.010	0.009	17.44
8.0.1	0.004	0.004	16.98
8.0.0	0.009	0.011	16.86
7.4.33	0.005	0.000	16.66
7.4.32	0.000	0.007	16.54
7.4.30	0.000	0.006	16.70
7.4.29	0.003	0.003	16.60
7.4.28	0.000	0.008	16.56
7.4.27	0.003	0.006	16.56
7.4.26	0.000	0.007	16.43
7.4.25	0.000	0.007	16.62
7.4.24	0.002	0.005	16.61
7.4.23	0.003	0.003	16.47
7.4.22	0.000	0.007	16.65
7.4.21	0.004	0.011	16.59
7.4.20	0.004	0.003	16.46
7.4.16	0.013	0.003	16.64
7.4.15	0.016	0.003	17.40
7.4.14	0.011	0.009	17.86
7.4.13	0.009	0.009	16.70
7.4.12	0.006	0.011	16.65
7.4.11	0.010	0.007	16.73
7.4.10	0.007	0.014	16.43
7.4.9	0.011	0.008	16.54
7.4.8	0.007	0.017	19.39
7.4.7	0.006	0.012	16.74
7.4.6	0.007	0.010	16.60
7.4.5	0.006	0.009	16.45
7.4.4	0.006	0.009	16.46
7.4.3	0.009	0.009	16.67
7.4.0	0.003	0.013	14.92
7.3.33	0.000	0.006	13.56
7.3.32	0.000	0.007	13.36
7.3.31	0.005	0.003	16.50
7.3.30	0.004	0.004	16.59
7.3.29	0.009	0.007	16.52
7.3.28	0.007	0.010	16.54
7.3.27	0.003	0.014	17.40
7.3.26	0.018	0.003	16.67
7.3.25	0.011	0.009	16.49
7.3.24	0.008	0.008	16.52
7.3.23	0.008	0.008	16.56
7.3.21	0.007	0.011	16.44
7.3.20	0.009	0.009	16.40
7.3.19	0.006	0.010	16.76
7.3.18	0.007	0.013	16.57
7.3.17	0.008	0.009	16.71
7.3.16	0.009	0.009	16.57
7.3.1	0.007	0.007	16.82
7.3.0	0.003	0.005	16.63
7.2.33	0.011	0.006	16.77
7.2.32	0.000	0.017	16.80
7.2.31	0.009	0.009	16.75
7.2.30	0.009	0.013	16.65
7.2.29	0.006	0.013	16.74
7.2.13	0.010	0.007	16.95
7.2.12	0.003	0.009	17.09
7.2.11	0.015	0.003	17.19
7.2.10	0.007	0.007	16.75
7.2.9	0.007	0.007	16.93
7.2.8	0.015	0.003	16.94
7.2.7	0.006	0.006	16.61
7.2.6	0.010	0.005	16.91
7.2.5	0.009	0.006	16.93
7.2.4	0.004	0.012	16.44
7.2.3	0.000	0.015	16.42
7.2.2	0.004	0.011	17.04
7.2.1	0.006	0.006	16.89
7.2.0	0.007	0.006	18.35
7.1.25	0.003	0.009	15.54
7.1.20	0.004	0.011	15.69
7.1.10	0.000	0.012	18.19
7.1.7	0.003	0.005	17.24
7.1.6	0.011	0.011	19.13
7.1.5	0.000	0.010	17.05
7.1.0	0.010	0.067	22.44
7.0.20	0.004	0.004	16.48
7.0.10	0.013	0.080	20.01
7.0.9	0.013	0.080	19.95
7.0.8	0.007	0.080	19.89
7.0.7	0.013	0.073	19.89
7.0.6	0.003	0.070	20.05
7.0.5	0.017	0.067	20.32
7.0.4	0.007	0.053	20.05
7.0.3	0.013	0.050	19.95
7.0.2	0.007	0.077	20.10
7.0.1	0.003	0.083	19.89
7.0.0	0.003	0.090	19.95
5.6.25	0.007	0.080	20.77
5.6.24	0.017	0.073	20.66
5.6.23	0.017	0.077	20.69
5.6.22	0.010	0.077	20.62
5.6.21	0.007	0.073	20.68
5.6.20	0.013	0.073	21.04
5.6.19	0.000	0.060	21.05
5.6.18	0.010	0.080	21.09
5.6.17	0.013	0.077	21.05
5.6.16	0.010	0.080	21.11
5.6.15	0.020	0.047	20.95
5.6.14	0.013	0.037	20.93
5.6.13	0.013	0.080	21.02
5.6.12	0.007	0.090	20.92
5.6.11	0.017	0.077	21.05
5.6.10	0.007	0.073	21.07
5.6.9	0.000	0.093	21.09
5.6.8	0.027	0.057	20.55
5.6.7	0.013	0.067	20.40
5.6.6	0.013	0.073	20.39
5.6.5	0.013	0.073	20.44
5.6.4	0.017	0.073	20.40
5.6.3	0.010	0.047	20.32
5.6.2	0.003	0.047	20.37
5.6.1	0.010	0.047	20.52
5.6.0	0.013	0.063	20.41
5.5.38	0.000	0.080	20.42
5.5.37	0.003	0.047	20.39
5.5.36	0.007	0.080	20.40
5.5.35	0.007	0.053	20.39
5.5.34	0.017	0.073	20.76
5.5.33	0.013	0.070	20.91
5.5.32	0.013	0.077	20.73
5.5.31	0.013	0.073	20.84
5.5.30	0.020	0.070	20.79
5.5.29	0.003	0.087	20.88
5.5.28	0.007	0.080	20.92
5.5.27	0.013	0.073	20.82
5.5.26	0.007	0.087	20.85
5.5.25	0.020	0.067	20.59
5.5.24	0.020	0.053	20.15
5.5.23	0.003	0.100	20.29
5.5.22	0.007	0.080	20.01
5.5.21	0.013	0.077	20.29
5.5.20	0.013	0.080	20.11
5.5.19	0.010	0.073	20.14
5.5.18	0.003	0.050	19.98
5.5.16	0.003	0.057	20.15
5.5.15	0.010	0.077	20.18
5.5.14	0.010	0.077	20.17
5.5.13	0.007	0.080	20.18
5.5.12	0.003	0.083	20.23
5.5.11	0.007	0.050	20.10
5.5.10	0.013	0.067	20.16
5.5.9	0.017	0.040	20.01
5.5.8	0.007	0.077	20.06
5.5.7	0.010	0.073	20.16
5.5.6	0.010	0.063	20.09
5.5.5	0.017	0.067	20.07
5.5.4	0.017	0.070	19.93
5.5.3	0.010	0.077	19.95
5.5.2	0.010	0.050	20.05
5.5.1	0.003	0.077	19.97
5.5.0	0.013	0.070	20.03

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