Online PHP editor | perf for iCeHp

<?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' => '' ]); $func = new Replacements(function (&$str) { $parts = preg_split('~^[\pC\pZ]+|[\pC\pZ]+$|\R(?:[\pC\pZ]*?(\R)[\pC\pZ]*)?~u', $str, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); return implode("\n", array_map(function($i) { return trim(preg_replace('~[\pC\pZ]+~u', ' ', $i));}, $parts)); }); // tests $tests = ['original' => $original, 'simple' => $simple, 'function' => $func, '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)
7.3.3	0.003	0.047	15.06
7.3.2	0.065	0.023	15.47
7.3.1	0.071	0.024	15.43
7.3.0	0.062	0.030	15.47
7.2.16	0.007	0.056	15.25
7.2.15	0.066	0.025	15.54
7.2.14	0.066	0.049	15.67
7.2.13	0.077	0.050	15.47
7.2.12	0.046	0.030	15.51
7.2.11	0.054	0.048	15.41
7.2.10	0.053	0.053	15.61
7.2.9	0.081	0.033	15.50
7.2.8	0.072	0.036	15.42
7.2.7	0.070	0.040	15.55
7.2.6	0.059	0.030	15.40
7.2.5	0.064	0.023	15.59
7.2.4	0.052	0.029	15.61
7.2.3	0.055	0.044	15.69
7.2.2	0.052	0.039	15.51
7.2.1	0.057	0.047	15.56
7.2.0	0.049	0.029	15.55
7.1.27	0.063	0.030	14.25
7.1.26	0.058	0.036	14.55
7.1.25	0.054	0.044	14.41
7.1.24	0.048	0.051	14.13
7.1.23	0.054	0.037	14.45
7.1.22	0.065	0.034	14.52
7.1.21	0.074	0.036	14.29
7.1.20	0.060	0.066	14.53
7.1.19	0.079	0.049	14.24
7.1.18	0.071	0.040	14.27
7.1.17	0.063	0.054	14.45
7.1.16	0.068	0.043	14.44
7.1.15	0.076	0.033	14.41
7.1.14	0.071	0.050	14.50
7.1.13	0.072	0.049	14.33
7.1.12	0.067	0.039	14.44
7.1.11	0.043	0.048	15.64
7.1.10	0.040	0.052	15.48
7.1.9	0.040	0.056	15.75
7.1.8	0.043	0.043	15.76
7.1.7	0.034	0.057	14.99
7.1.6	0.035	0.051	24.01
7.1.5	0.048	0.055	23.84
7.1.4	0.043	0.052	23.54
7.1.3	0.047	0.050	23.51
7.1.2	0.038	0.057	23.51
7.1.1	0.038	0.059	14.78
7.1.0	0.049	0.071	14.98
7.0.33	0.067	0.045	14.05
7.0.32	0.141	0.051	13.85
7.0.31	0.058	0.058	14.11
7.0.30	0.063	0.052	14.05
7.0.29	0.064	0.035	14.08
7.0.28	0.071	0.047	13.61
7.0.27	0.057	0.034	13.80
7.0.26	0.070	0.047	14.13
7.0.25	0.050	0.063	15.32
7.0.24	0.048	0.066	15.25
7.0.23	0.064	0.051	15.00
7.0.22	0.036	0.049	15.29
7.0.21	0.066	0.043	14.62
7.0.20	0.034	0.049	14.67
7.0.19	0.039	0.048	14.69
7.0.18	0.037	0.056	14.42
7.0.17	0.042	0.043	14.40
7.0.16	0.035	0.054	14.43
7.0.15	0.035	0.052	14.56
7.0.14	0.038	0.053	14.47
7.0.13	0.039	0.054	14.63
7.0.12	0.042	0.052	14.61
7.0.11	0.040	0.046	14.53
7.0.10	0.036	0.050	14.61
7.0.9	0.036	0.053	14.61
7.0.8	0.034	0.046	14.41
7.0.7	0.036	0.050	14.47
7.0.6	0.034	0.051	14.35
7.0.5	0.037	0.054	14.58
7.0.4	0.036	0.056	14.60
7.0.3	0.045	0.066	14.63
7.0.2	0.054	0.045	14.71
7.0.1	0.043	0.045	14.69
7.0.0	0.046	0.055	14.62
5.6.40	0.030	0.151	14.89
5.6.39	0.014	0.150	14.71
5.6.38	0.022	0.148	14.65