Online PHP editor | perf for VFokb

<?php namespace Fu { final class Exception extends \Exception { } final class Token { public $tokenType; public $content; public $contentLength; final public function __construct($tokenType, $content, $contentLength) { $this->tokenType = $tokenType; $this->content = $content; $this->contentLength = $contentLength; } } final class Parser { const FU_TOKENTYPE_WHITESPACE = 0x00000001; const FU_TOKENTYPE_DATATYPE_CHAR = 0x00000002; const FU_TOKENTYPE_VARIABLE = 0x00000003; const FU_TOKENTYPE_SEMICOLON = 0x00000004; const FU_TOKENTYPE_ASSIGN = 0x00000005; const FU_TOKENTYPE_LITERAL_INTEGER = 0x00000006; const FU_TOKENTYPE_OPERATOR_ADD = 0x00000007; const FU_SCOPE_ROOT = 0x00000001; const FU_SCOPE_DECLARATION_VARIABLE = 0x00000002; const FU_SCOPE_ final public static function parse($source) { $tokens = []; while ($source !== '') { $token = NULL; switch (substr($source, 0, 1)) { case ' ': case "\t": case "\n": $i = 1; while ($source{$i} === ' ' || $source{$i} === "\t" || $source{$i} === "\n") { ++$i; } $tokens[] = new Token(self::FU_TOKENTYPE_WHITESPACE, substr($source, 0, $i), $i); $source = substr($source, $i); break; case 'c': if (substr($source, 0, 4) === 'char') { $tokens[] = new Token(self::FU_TOKENTYPE_DATATYPE_CHAR, 'char', 4); $source = substr($source, 4); } else { throw new Exception('Parse error at line x, position x; unidentified symbol'); } break; case '$': $i = 1; while (in_array($source{$i}, ['_', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'])) { ++$i; } $tokens[] = new Token(self::FU_TOKENTYPE_VARIABLE, substr($source, 0, $i), $i); $source = substr($source, $i); break; case ';': $tokens[] = new Token(self::FU_TOKENTYPE_SEMICOLON, ';', 1); $source = substr($source, 1); break; case '=': $tokens[] = new Token(self::FU_TOKENTYPE_ASSIGN, '=', 1); $source = substr($source, 1); break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': $i = 1; while (in_array($source{$i}, ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'])) { ++$i; } // TODO: float parsing $tokens[] = new Token(self::FU_TOKENTYPE_LITERAL_INTEGER, substr($source, 0, $i), $i); $source = substr($source, $i); break; case '+': $tokens[] = new Token(self::FU_TOKENTYPE_ADD, '+', 1); $source = substr($source, 1); break; } } return $tokens; } } } namespace { var_dump(Fu\Parser::parse('char $x;$x=1+2;')); }

Version	System time (s)	User time (s)	Memory (MiB)
5.4.29	0.016	0.046	12.52
5.4.28	0.013	0.047	12.42
5.4.27	0.014	0.049	12.42
5.4.26	0.014	0.048	12.42
5.4.25	0.012	0.052	12.42
5.4.24	0.011	0.051	12.42
5.4.23	0.007	0.057	12.41
5.4.22	0.013	0.041	12.41
5.4.21	0.006	0.038	12.41
5.4.20	0.015	0.054	12.41
5.4.19	0.017	0.054	12.41
5.4.18	0.016	0.050	12.41
5.4.17	0.008	0.049	12.41
5.4.16	0.012	0.048	12.41
5.4.15	0.011	0.047	12.41
5.4.14	0.006	0.055	12.10
5.4.13	0.010	0.048	12.08
5.4.12	0.007	0.050	12.04
5.4.11	0.007	0.051	12.04
5.4.10	0.010	0.044	12.04
5.4.9	0.006	0.047	12.04
5.4.8	0.010	0.046	12.04
5.4.7	0.010	0.047	12.04
5.4.6	0.012	0.046	12.03
5.4.5	0.007	0.052	12.03
5.4.4	0.006	0.051	12.02
5.4.3	0.014	0.071	12.02
5.4.2	0.015	0.060	12.02
5.4.1	0.015	0.104	12.02
5.4.0	0.010	0.050	11.52
5.3.28	0.012	0.065	12.71
5.3.27	0.015	0.068	12.72
5.3.26	0.023	0.070	12.72
5.3.25	0.009	0.055	12.72
5.3.24	0.011	0.053	12.72
5.3.23	0.010	0.051	12.71
5.3.22	0.005	0.059	12.68
5.3.21	0.010	0.055	12.68
5.3.20	0.008	0.054	12.68
5.3.19	0.006	0.056	12.68
5.3.18	0.008	0.054	12.68
5.3.17	0.005	0.057	12.67
5.3.16	0.011	0.051	12.67
5.3.15	0.006	0.056	12.67
5.3.14	0.006	0.056	12.66
5.3.13	0.008	0.057	12.66
5.3.12	0.006	0.061	12.66
5.3.11	0.008	0.060	12.66
5.3.10	0.014	0.056	12.14
5.3.9	0.007	0.058	12.13
5.3.8	0.010	0.052	12.11
5.3.7	0.010	0.052	12.11
5.3.6	0.012	0.050	12.10
5.3.5	0.010	0.052	12.04
5.3.4	0.014	0.052	12.04
5.3.3	0.012	0.052	12.00
5.3.2	0.010	0.051	11.79
5.3.1	0.016	0.060	11.75
5.3.0	0.006	0.058	11.74