Online PHP editor | perf for B0smh

<?php $charmap = [ 'NUL' => "\x00", // NULL (U+0000) 'SOH' => "\x01", // START OF HEADING (U+0001) 'STX' => "\x02", // START OF TEXT (U+0002) 'ETX' => "\x03", // END OF TEXT (U+0003) 'EOT' => "\x04", // END OF TRANSMISSION (U+0004) 'ENQ' => "\x05", // ENQUIRY (U+0005) 'HT' => "\x09", // HORIZONTAL TAB (U+0009) 'LF' => "\x0a", // LINE FEED (U+000A) 'VT' => "\x0b", // VERTICAL TAB (U+000B) 'CR' => "\x0d", // CARRIAGE RETURN (U+000D) 'ETB' => "\x17", // END OF TRANSMISSION BLOCK (U+0017) 'SP' => "\x20", // SPACE (U+0020) 'ZWS' => "\xe2\x80\x8b", // ZERO WIDTH SPACE (U+200B) 'MSBS' => "\xf0\x9d\x85\xb7", // MUSICAL SYMBOL BEGIN SLUR (U+1D177) 'MSBP' => "\xf0\x9d\x85\xb9", // MUSICAL SYMBOL BEGIN PHRASE (U+1D179) ]; foreach ($charmap as $k => $v) { define($k, $v); } $strings = [ 'user6003859' => LF . LF . LF . 'a' . SP . 'b'. SP . SP . 'c' . SP . SP . SP . LF . SP . 'd' . SP . SP . SP . SP . 'e' . LF . MSBS . 'f' . MSBS . 'g' . MSBS . MSBS . 'h' . MSBS . MSBS . ZWS . ZWS . MSBP . MSBP . 'i' . MSBP . SP . MSBP . SP . 'j' . LF . LF . LF . LF . LF . 'k' . SP . 'l' . SP . 'm' . SP . 'n' . SP . SP . SP . LF . MSBP . 'o' . MSBP . MSBP . 'p' . LF . LF . LF . LF, 'mickmackusa' => NUL . LF . LF . SOH . LF . CR . LF . VT . ETB . 'a' . SP . 'ab' . CR . LF . HT . HT . CR . CR . LF . 'cà' . SOH . 'êß€' . NUL . NUL . 'abcbc'. SP . SP . SP . 'd' . LF . LF . HT . CR . LF . ENQ . SP . SP . SP . 'e' . STX . LF . ETX . LF . EOT . LF ]; function display($str, $charmap) { $converter = array_map(function ($i) { return '{'.$i.'}'; }, array_flip($charmap)); $handle = fopen("data:text/plain,$str", 'r'); while ( false !== $line = fgets($handle) ) { echo strtr($line, $converter), PHP_EOL; } fclose($handle); } class Replacements { const FUNC = 0; const REGEX = 1; protected $patterns; protected $replacements; protected $func; protected $typeRegex; public function __construct($arg) { if ( is_array($arg) ) { $this->type = self::REGEX; $this->patterns = []; $this->replacements = []; $this->addPatterns($arg); } elseif ( is_callable($arg) ) { $this->type = self::FUNC; $this->addFunction($arg); } else throw new Exception('invalid argument type'); } protected function addPatterns($replacements) { foreach($replacements as $pattern => $replacement) { $this->patterns[] = $pattern; $this->replacements[] = $replacement; } } protected function addFunction($func) { $this->func = $func; } public function execute($str) { if ( $this->type === self::REGEX ) return preg_replace($this->patterns, $this->replacements, $str); return call_user_func_array($this->func, [&$str]); } }; $original = new Replacements([ '~\R~u' => "\n", '/(?:^((\pZ)+|((?!\n)\pC)+)(?1)*)|((?1)$)|(?:((?2)+|(?3)+)(?=(?2)|(?3)))/um' => '', '/(\pZ+)|((?!\n)\pC)/u' => ' ', '/(^\n+)|(\n+$)|(\n(?=\n{2}))/u' => '' ]); $simple = new Replacements([ '~\A[\pZ\pC]+|[\pZ\pC]+\z~u' => '', # trim the string '~\R~u' => "\n", # normalize newlines '~\pZ+|[^\n\PC]+~u' => ' ', # replace Z and C with space '~^ +| +$| \K +~m' => '', # trim lines, delete consecutive spaces '~\n\n\K\n+~' => '' # removes more than 2 consecutives newlines ]); $optimized = new Replacements([ '~\r\n?|\x0b|\f|\xe2\x80[\xa8\xa9]~S' => "\n", '~ [^\pZ\pC]+ \K \pZ* (?:[^\PC\n]+\pZ*)* (?: (\n) \pZ*+ (?:[^\PC\n]+\pZ*)*+ (?: (\n) [\pZ\pC]* )?+ (?!\z) | [\pZ\pC]+ )? | [\pZ\pC]+ ~Aux' => '$1$2 ', '~ (?:$|(?<=^ ))~m' => '' ]); // tests $tests = ['original' => $original, 'simple' => $simple, 'optimized' => $optimized]; $str = $strings['user6003859'] . $strings['mickmackusa']; $str = str_repeat($str, 10); $res = []; foreach ($tests as $k=>&$test) { $res[$k] = $test->execute($str); } echo 'same result: ', var_dump(count(array_unique($res)) === 1); $names = array_keys($tests); $times = array_fill_keys($names, 0); define('REPETITIONS', 100); for ($i=0; $i < REPETITIONS; $i++) { shuffle($names); foreach ($names as $name) { $start = microtime(true); $tests[$name]->execute($str); $stop = microtime(true); $times[$name] += $stop - $start; } } foreach($times as $k=>$v) { printf("%-12s: %.2es\n", $k, $v/REPETITIONS); } // display($res['optimized'], $charmap);

Version	System time (s)	User time (s)	Memory (MiB)
7.3.12	0.010	0.030	15.32
7.3.11	0.003	0.033	15.38
7.3.10	0.003	0.036	15.25
7.3.9	0.013	0.027	15.25
7.3.8	0.007	0.031	15.44
7.3.7	0.010	0.027	15.21
7.3.6	0.000	0.034	15.27
7.3.5	0.009	0.025	15.43
7.3.4	0.000	0.037	15.31
7.3.3	0.010	0.029	15.30
7.3.2	0.000	0.038	17.03
7.3.1	0.010	0.029	16.74
7.3.0	0.003	0.032	17.01
7.2.24	0.003	0.028	15.55
7.2.23	0.009	0.028	15.15
7.2.22	0.003	0.034	15.57
7.2.21	0.007	0.033	15.53
7.2.20	0.014	0.025	15.48
7.2.19	0.011	0.025	15.35
7.2.18	0.006	0.029	15.56
7.2.17	0.003	0.031	15.34
7.2.16	0.003	0.030	15.30
7.2.15	0.013	0.026	16.99
7.2.14	0.006	0.029	17.16
7.2.13	0.006	0.032	16.98
7.2.12	0.006	0.028	16.97
7.2.11	0.003	0.030	17.21
7.2.10	0.012	0.025	17.33
7.2.9	0.007	0.030	17.00
7.2.8	0.003	0.030	17.23
7.2.7	0.007	0.030	17.41
7.2.6	0.013	0.029	17.29
7.2.5	0.006	0.029	17.10
7.2.4	0.007	0.030	17.28
7.2.3	0.003	0.037	17.24
7.2.2	0.003	0.029	16.95
7.2.1	0.007	0.031	17.05
7.2.0	0.014	0.024	17.13
7.1.33	0.010	0.027	16.00
7.1.32	0.000	0.042	16.21
7.1.31	0.003	0.039	16.33
7.1.30	0.007	0.033	15.95
7.1.29	0.010	0.033	16.20
7.1.28	0.007	0.033	16.01
7.1.27	0.010	0.030	16.21
7.1.26	0.012	0.028	16.10
7.1.25	0.013	0.025	16.29
7.1.11	0.016	0.043	16.61
7.1.10	0.031	0.064	16.83
7.1.9	0.034	0.055	16.97
7.1.8	0.032	0.074	16.77
7.1.7	0.019	0.048	15.84
7.1.6	0.033	0.046	33.31
7.1.5	0.034	0.044	33.07
7.1.4	0.034	0.041	32.65
7.1.3	0.027	0.050	32.77
7.1.2	0.030	0.052	32.85
7.1.1	0.020	0.043	15.23
7.1.0	0.022	0.044	15.38
7.0.25	0.020	0.042	16.48
7.0.24	0.022	0.040	16.62
7.0.23	0.024	0.047	16.51
7.0.22	0.019	0.048	16.47
7.0.21	0.029	0.049	15.16
7.0.20	0.026	0.043	15.28
7.0.19	0.020	0.039	15.48
7.0.18	0.016	0.044	14.99
7.0.17	0.025	0.037	14.86
7.0.16	0.020	0.043	14.98
7.0.15	0.023	0.042	15.05
7.0.14	0.106	0.043	15.23
7.0.13	0.030	0.066	15.18
7.0.12	0.017	0.055	15.03
7.0.11	0.015	0.047	15.17
7.0.10	0.013	0.048	14.87
7.0.9	0.020	0.041	14.95
7.0.8	0.019	0.054	14.87
7.0.7	0.025	0.079	14.89
7.0.6	0.026	0.045	14.76
7.0.5	0.021	0.043	14.86
7.0.4	0.013	0.049	14.96
7.0.3	0.023	0.043	15.04
7.0.2	0.021	0.046	14.93
7.0.1	0.022	0.044	15.03
7.0.0	0.023	0.062	15.09