Online PHP editor | perf for tqnZW

<?PHP class InvalidStateException extends RuntimeException { } class Compiler { private $ptr; private $arr; private $code; private $commands = array('>', '<', '+', '-', '.', ',', '[', ']'); private $call_stack = array(); const CellSize = 8; public function parseString($code, $throwException = true) { $this->code = $code; for ($i=0;$i<strlen($this->code);$i++) { $c = substr($this->code, $i, 1); if (!in_array($c, $this->commands)) { continue; } } } public function execute($code) { $this->arr = array(); $this->ptr = 0; $this->code = $code; for ($this->i=0;$this->i<strlen($this->code);$this->i++) { $c = $this->c = substr($this->code, $i, 1); if (!in_array($c, $this->commands)) { continue; } elseif ($c == '>') { $this->increment_pointer(); } elseif ($c == '<') { $this->decrement_pointer(); } elseif ($c == '+') { $this->increment_val(); } elseif ($c == '-') { $this->decrement_val(); } elseif ($c == '.') { $this->output_val(); } elseif ($c == ',') { $this->store_val($this->input_val()); } elseif ($c == '[') { $this->loop($this->i); } } } private function stack($func) { if (is_null($func)) { if (count($this->{call_stack})) == 0) { throw new InvalidStateException("Trying to pop empty call stack."); return false; } array_pop($this->call_stack); return true; } else { $info = array('command' => $this->c, 'pos' => $this->i, 'internal_function' => $func); array_push($this->call_stack, $info); return true; } } private function increment_pointer() { $this->stack(__FUNCTION__); $this->ptr++; if (!isset($this->arr[$this->ptr])) $this->arr[$this->ptr] = 0; $this->stack(); return true; } private function decrement_pointer() { $this->stack(__FUNCTION__); $this->ptr--; if ($this->ptr < 0) { throw new IllegalStateException("The data pointer is less than 0."); return false; } $this->stack(); return true; } private function increment_val() { $x = $this->arr[$this->ptr]++; if ($x < $this->minimum_cellsize()) { $this->arr[$this->ptr] = $this->maximum_cellsize(); } elseif ($x > $this->maximum_cellsize()) { $this->arr[$this->ptr] = $this->minimum_cellsize(); } return true; } public function getCallStack() { return $this->call_stack; } } $c = new Compiler(); $bf = '++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.'; $c->execute($bf); ?>

Version	System time (s)	User time (s)	Memory (MiB)
5.4.25	0.020	0.043	18.93
5.4.24	0.007	0.053	18.98
5.4.23	0.013	0.047	18.93
5.4.22	0.007	0.057	18.77
5.4.21	0.020	0.040	18.93
5.4.20	0.010	0.053	18.93
5.4.19	0.017	0.063	18.78
5.4.18	0.027	0.050	19.03
5.4.17	0.013	0.047	18.73
5.4.16	0.010	0.060	18.92
5.4.15	0.013	0.057	18.94
5.4.14	0.007	0.053	16.37
5.4.13	0.007	0.053	16.59
5.4.12	0.010	0.050	16.41
5.4.11	0.007	0.050	16.43
5.4.10	0.013	0.043	16.45
5.4.9	0.010	0.050	16.76
5.4.8	0.010	0.053	16.60
5.4.7	0.007	0.070	16.58
5.4.6	0.010	0.047	16.32
5.4.5	0.010	0.053	16.62
5.4.4	0.023	0.033	16.32
5.4.3	0.007	0.047	16.45
5.4.2	0.017	0.040	16.44
5.4.1	0.003	0.073	16.48
5.4.0	0.013	0.043	16.02
5.3.28	0.013	0.050	14.69
5.3.27	0.013	0.043	14.73
5.3.26	0.010	0.067	14.86
5.3.25	0.013	0.047	14.63
5.3.24	0.020	0.040	14.54
5.3.23	0.010	0.063	14.73
5.3.22	0.007	0.050	14.69
5.3.21	0.010	0.050	14.61
5.3.20	0.007	0.050	14.76
5.3.19	0.017	0.063	14.61
5.3.18	0.013	0.047	14.60
5.3.17	0.010	0.053	14.76
5.3.16	0.003	0.057	14.58
5.3.15	0.010	0.047	14.57
5.3.14	0.007	0.047	14.66
5.3.13	0.013	0.067	14.59
5.3.12	0.010	0.050	14.57
5.3.11	0.013	0.063	14.57
5.3.10	0.013	0.043	14.20
5.3.9	0.010	0.070	14.11
5.3.8	0.020	0.037	13.88
5.3.7	0.017	0.060	14.14
5.3.6	0.010	0.050	14.00
5.3.5	0.000	0.053	14.07
5.3.4	0.010	0.043	14.06
5.3.3	0.010	0.043	14.16
5.3.2	0.000	0.053	13.91
5.3.1	0.010	0.067	13.65
5.3.0	0.017	0.053	13.74