Online PHP editor | perf for srSi4

<?php class ringBuffer implements ArrayAccess { private $data; private $current = 0; public $size; public function __construct($sz=10) { $this->size = $sz; foreach(range(1, $sz) as $k=>$v) { /* s: whether this node is set; d: whether this node is “dirty” (has been read since it was last set); v: the value */ $this->data[$k] = array('s' => false, 'd' => false, 'v' => NULL); } } public function offsetGet($key) { if (! is_int($key)) $this->throwEx(array(“offset '%s' must be an integer, not %s”, $key, gettype($key))); if ($key > $this->size) $key %= $this->size; if (!isset($this->data[$key])) return false; if (!$this->data[$key]['s']) return false; $this->data[$key]['d'] = false; return $this->data[$key]['v']; } public function offsetExists($key) { if (! is_int($key)) throw new Exception(); if ($key > $this->size) return $this->data[$key]['s']; } public function offsetUnset($key) { $this->data[$key]['s'] = false; $this->data[$key]['v'] = NULL; } private function throwEx() { $args = func_get_args(); if (is_array($args0)) { $msg = call_user_func_array('sprintf', $args0); } throw new Exception($msg); } public function push($value) { if ($this->current >= $this->size) $this->current %= $this->size; $this->data[$this->current] = array('s'=>true, 'd'=>true, 'v' => $value); $this->current++; return $value; } } $a = new ringBuffer(2); $a->push(“foo”); $a->push(“bar”); $a->push(“baz”); var_dump($a); /* Will throw an exception because you can't directly set indices in a ringBuffer */ $a0 = 'foo'; /* Will throw an exception because ringBuffer indices must be ints */ var_dump($a['foo']); var_dump($a[1.0]);

Version	System time (s)	User time (s)	Memory (MiB)
5.4.28	0.011	0.058	12.39
5.4.27	0.010	0.054	12.38
5.4.26	0.009	0.054	12.38
5.4.25	0.009	0.055	12.39
5.4.24	0.007	0.039	12.38
5.4.23	0.006	0.039	12.38
5.4.22	0.010	0.035	12.38
5.4.21	0.008	0.034	12.38
5.4.20	0.009	0.040	12.38
5.4.19	0.009	0.041	12.37
5.4.18	0.005	0.042	12.37
5.4.17	0.007	0.059	12.38
5.4.16	0.012	0.045	12.38
5.4.15	0.005	0.039	12.38
5.4.14	0.011	0.046	12.06
5.4.13	0.012	0.041	12.04
5.4.12	0.005	0.039	12.02
5.4.11	0.008	0.047	12.00
5.4.10	0.008	0.035	12.00
5.4.9	0.007	0.037	12.00
5.4.8	0.008	0.035	12.00
5.4.7	0.006	0.035	12.00
5.4.6	0.008	0.036	12.00
5.4.5	0.009	0.035	12.00
5.4.4	0.006	0.036	11.99
5.4.3	0.010	0.033	11.99
5.4.2	0.007	0.041	11.98
5.4.1	0.009	0.040	11.99
5.4.0	0.003	0.040	11.48
5.3.28	0.008	0.051	12.71
5.3.27	0.009	0.052	12.72
5.3.26	0.009	0.051	12.72
5.3.25	0.005	0.038	12.72
5.3.24	0.004	0.040	12.72
5.3.23	0.008	0.038	12.71
5.3.22	0.008	0.039	12.68
5.3.21	0.005	0.041	12.68
5.3.20	0.012	0.053	12.68
5.3.19	0.008	0.037	12.67
5.3.18	0.007	0.045	12.68
5.3.17	0.005	0.038	12.66
5.3.16	0.010	0.034	12.67
5.3.15	0.009	0.052	12.67
5.3.14	0.007	0.047	12.66
5.3.13	0.008	0.039	12.66
5.3.12	0.008	0.045	12.66
5.3.11	0.005	0.048	12.66
5.3.10	0.009	0.043	12.11
5.3.9	0.012	0.032	12.09
5.3.8	0.008	0.035	12.08
5.3.7	0.008	0.042	12.08
5.3.6	0.008	0.033	12.06
5.3.5	0.007	0.036	12.00
5.3.4	0.005	0.039	12.00
5.3.3	0.006	0.036	11.96
5.3.2	0.004	0.036	11.74
5.3.1	0.006	0.035	11.71
5.3.0	0.009	0.045	11.70

Version

System time (s)

User time (s)

Memory (MiB)

5.4.28

0.011

0.058

12.39

5.4.27

0.010

0.054

12.38

5.4.26

0.009

0.054

12.38

5.4.25

0.009

0.055

12.39

5.4.24

0.007

0.039

12.38

5.4.23

0.006

0.039

12.38

5.4.22

0.010

0.035

12.38

5.4.21

0.008

0.034

12.38

5.4.20

0.009

0.040

12.38

5.4.19

0.009

0.041

12.37

5.4.18

0.005

0.042

12.37

5.4.17

0.007

0.059

12.38

5.4.16

0.012

0.045

12.38

5.4.15

0.005

0.039

12.38

5.4.14

0.011

0.046

12.06

5.4.13

0.012

0.041

12.04

5.4.12

0.005

0.039

12.02

5.4.11

0.008

0.047

12.00

5.4.10

0.008

0.035

12.00

5.4.9

0.007

0.037

12.00

5.4.8

0.008

0.035

12.00

5.4.7

0.006

0.035

12.00

5.4.6

0.008

0.036

12.00

5.4.5

0.009

0.035

12.00

5.4.4

0.006

0.036

11.99

5.4.3

0.010

0.033

11.99

5.4.2

0.007

0.041

11.98

5.4.1

0.009

0.040

11.99

5.4.0

0.003

0.040

11.48

5.3.28

0.008

0.051

12.71

5.3.27

0.009

0.052

12.72

5.3.26

0.009

0.051

12.72

5.3.25

0.005

0.038

12.72

5.3.24

0.004

0.040

12.72

5.3.23

0.008

0.038

12.71

5.3.22

0.008

0.039

12.68

5.3.21

0.005

0.041

12.68

5.3.20

0.012

0.053

12.68

5.3.19

0.008

0.037

12.67

5.3.18

0.007

0.045

12.68

5.3.17

0.005

0.038

12.66

5.3.16

0.010

0.034

12.67

5.3.15

0.009

0.052

12.67

5.3.14

0.007

0.047

12.66

5.3.13

0.008

0.039

12.66

5.3.12

0.008

0.045

12.66

5.3.11

0.005

0.048

12.66

5.3.10

0.009

0.043

12.11

5.3.9

0.012

0.032

12.09

5.3.8

0.008

0.035

12.08

5.3.7

0.008

0.042

12.08

5.3.6

0.008

0.033

12.06

5.3.5

0.007

0.036

12.00

5.3.4

0.005

0.039

12.00

5.3.3

0.006

0.036

11.96

5.3.2

0.004

0.036

11.74

5.3.1

0.006

0.035

11.71

5.3.0

0.009

0.045

11.70