Online PHP editor | perf for opjLk

<?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]); } }; $original = new Replacements([ '~\R~Su' => "\n", '/(?:^((\pZ)+|((?!\n)\pC)+)(?1)*)|((?1)$)|(?:((?2)+|(?3)+)(?=(?2)|(?3)))/um' => '', '/(\pZ+)|((?!\n)\pC)/u' => ' ', '/(^\n+)|(\n+$)|(\n(?=\n{2}))/u' => '' ]); $new = 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' => '' ]); $simple = new Replacements([ '~\A[\pZ\pC]+|[\pZ\pC]+\z~u' => '', # trim the string '~\R~u' => "\n", # normalize newlines '~\pZ+|[^\n\PC]+~u' => ' ', # replace Z and C with space '~^ +| +$| \K +~m' => '', # trim lines, delete consecutive spaces '~\n\n\K\n+~' => '' # removes more than 2 consecutives newlines ]); // tests $tests = ['original' => $original, 'new' => $new, 'simple' => $simple]; $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['new'], $charmap);

Version	System time (s)	User time (s)	Memory (MiB)
7.3.1	0.010	0.027	16.84
7.3.0	0.010	0.029	16.72
7.2.13	0.003	0.031	17.10
7.2.12	0.007	0.033	17.23
7.2.11	0.003	0.033	17.18
7.2.10	0.004	0.029	17.19
7.2.9	0.010	0.020	17.13
7.2.8	0.000	0.037	17.09
7.2.7	0.013	0.023	17.18
7.2.6	0.007	0.033	17.11
7.2.5	0.003	0.033	17.38
7.2.4	0.007	0.031	17.30
7.2.3	0.003	0.030	17.27
7.2.2	0.003	0.042	17.19
7.2.1	0.009	0.028	17.29
7.2.0	0.009	0.025	17.31
7.1.25	0.000	0.049	16.25
7.1.11	0.007	0.041	18.55
7.1.10	0.021	0.046	18.23
7.1.9	0.007	0.043	18.22
7.1.8	0.000	0.047	18.48
7.1.7	0.006	0.041	17.43
7.1.6	0.023	0.039	34.97
7.1.5	0.017	0.042	34.65
7.1.4	0.022	0.038	34.20
7.1.3	0.021	0.041	34.30
7.1.2	0.014	0.048	34.35
7.1.1	0.006	0.039	16.96
7.1.0	0.007	0.039	16.98
7.0.25	0.009	0.038	17.82
7.0.24	0.003	0.043	17.98
7.0.23	0.010	0.038	17.75
7.0.22	0.003	0.043	18.16
7.0.21	0.000	0.044	16.52
7.0.20	0.007	0.042	17.03
7.0.19	0.003	0.041	16.87
7.0.18	0.007	0.040	16.53
7.0.17	0.007	0.039	16.60
7.0.16	0.007	0.041	16.61
7.0.15	0.003	0.043	16.36
7.0.14	0.006	0.039	16.80
7.0.13	0.006	0.039	16.70
7.0.12	0.013	0.032	16.83
7.0.11	0.003	0.041	16.71
7.0.10	0.006	0.039	16.64
7.0.9	0.006	0.042	16.76
7.0.8	0.013	0.059	16.77
7.0.7	0.007	0.045	16.64
7.0.6	0.010	0.038	16.47
7.0.5	0.007	0.041	16.64
7.0.4	0.003	0.054	16.87
7.0.3	0.000	0.050	16.80
7.0.2	0.012	0.037	16.71
7.0.1	0.020	0.059	16.86
7.0.0	0.006	0.048	16.71