3v4l.org

run code in 300+ PHP versions simultaneously
<?php class ObjectMap { private $keyMap = []; private $valMap = []; private $keyVal = []; private $valKey = []; private function hash($object) { return spl_object_hash($object); } public function set($key, $val) { $this->keyMap[$keyHash = $this->hash($key)] = $key; $this->valMap[$valHash = $this->hash($val)] = $val; $this->keyVal[$keyHash] = $valHash; $this->valKey[$valHash] = $keyHash; } public function get($key) { if (isset($this->keyVal[$keyHash = $this->hash($key)], $this->valMap[$this->keyVal[$keyHash]])) { return $this->valMap[$this->keyVal[$keyHash]]; } return null; } public function getKey($val) { if (isset($this->valKey[$valHash = $this->hash($val)], $this->keyMap[$this->valKey[$valHash]])) { return $this->keyMap[$this->valKey[$valHash]]; } } } $objectMap = new ObjectMap(); $objectMap->set($a = (object) ['value' => 'a'], $b = (object) ['value' => 'b']); $objectMap->set($c = (object) ['value' => 'c'], $d = (object) ['value' => 'd']); $objectMap->set($e = (object) ['value' => 'e'], $f = (object) ['value' => 'f']); var_dump($objectMap->get($a)); var_dump($objectMap->get($c)); var_dump($objectMap->getKey($f));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0070.00718.52
8.3.50.0150.00821.14
8.3.40.0110.01119.00
8.3.30.0100.00719.18
8.3.20.0040.00420.30
8.3.10.0090.00021.89
8.3.00.0090.00019.26
8.2.180.0180.00416.88
8.2.170.0090.00622.96
8.2.160.0090.00620.52
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0040.00422.24
8.2.110.0040.00422.13
8.2.100.0060.00617.88
8.2.90.0000.00819.25
8.2.80.0030.00617.97
8.2.70.0030.00517.75
8.2.60.0030.00718.03
8.2.50.0060.00618.07
8.2.40.0040.00418.28
8.2.30.0000.00718.23
8.2.20.0000.00817.88
8.2.10.0040.00418.21
8.2.00.0080.00017.88
8.1.280.0100.00625.92
8.1.270.0120.00621.92
8.1.260.0060.00326.35
8.1.250.0000.00728.09
8.1.240.0000.00823.92
8.1.230.0040.00817.89
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0060.00317.25
8.1.190.0000.00817.35
8.1.180.0080.00018.10
8.1.170.0030.00518.53
8.1.160.0000.00721.97
8.1.150.0030.00518.96
8.1.140.0000.00717.44
8.1.130.0000.00717.76
8.1.120.0000.00717.49
8.1.110.0000.00717.56
8.1.100.0000.00817.56
8.1.90.0050.00217.43
8.1.80.0000.00717.52
8.1.70.0030.00317.44
8.1.60.0000.00717.60
8.1.50.0000.00817.61
8.1.40.0000.00817.44
8.1.30.0060.00317.69
8.1.20.0000.00717.64
8.1.10.0030.00617.57
8.1.00.0040.00417.54
8.0.300.0040.00418.77
8.0.290.0050.00316.75
8.0.280.0000.00718.47
8.0.270.0000.00717.30
8.0.260.0060.00017.25
8.0.250.0060.00317.07
8.0.240.0000.00716.96
8.0.230.0040.00416.90
8.0.220.0000.00716.88
8.0.210.0070.00016.86
8.0.200.0060.00016.93
8.0.190.0030.00717.08
8.0.180.0030.00716.98
8.0.170.0030.00516.92
8.0.160.0000.00717.02
8.0.150.0050.00316.96
8.0.140.0080.00016.89
8.0.130.0060.00013.40
8.0.120.0040.00416.86
8.0.110.0040.00416.82
8.0.100.0000.00716.87
8.0.90.0070.00016.82
8.0.80.0060.00916.94
8.0.70.0000.00716.87
8.0.60.0000.00816.88
8.0.50.0040.00417.02
8.0.30.0070.01217.07
8.0.20.0060.01317.40
8.0.10.0060.00317.02
8.0.00.0060.01116.65
7.4.330.0000.00515.00
7.4.320.0000.00616.54
7.4.300.0030.00316.48
7.4.290.0030.00316.65
7.4.280.0030.00616.46
7.4.270.0000.00716.67
7.4.260.0000.00716.62
7.4.250.0040.00416.41
7.4.240.0030.00316.58
7.4.230.0070.00016.56
7.4.220.0090.00916.57
7.4.210.0060.01316.63
7.4.200.0070.00016.73
7.4.160.0080.00816.47
7.4.150.0090.00917.40
7.4.140.0100.01117.86
7.4.130.0090.00916.59
7.4.120.0090.00916.57
7.4.110.0100.00716.38
7.4.100.0000.02216.65
7.4.90.0040.01416.67
7.4.80.0110.00619.39
7.4.70.0130.00316.63
7.4.60.0120.00916.54
7.4.50.0000.00516.55
7.4.40.0100.01416.52
7.4.30.0070.01516.61
7.4.00.0030.01215.25
7.3.330.0000.00513.43
7.3.320.0000.00513.32
7.3.310.0030.00316.38
7.3.300.0030.00316.24
7.3.290.0090.00816.43
7.3.280.0100.00516.40
7.3.270.0090.00917.40
7.3.260.0130.00716.65
7.3.250.0120.00616.43
7.3.240.0090.00916.66
7.3.230.0100.01016.39
7.3.210.0120.00616.66
7.3.200.0130.00619.39
7.3.190.0070.01116.31
7.3.180.0110.00716.35
7.3.170.0080.00816.38
7.3.160.0120.00416.64
7.3.10.0160.00616.52
7.3.00.0090.01216.49
7.2.330.0060.01316.71
7.2.320.0080.01616.75
7.2.310.0000.01716.80
7.2.300.0080.01016.84
7.2.290.0100.00716.81
7.2.130.0120.00316.91
7.2.120.0100.01416.64
7.2.110.0090.01216.67
7.2.100.0040.01516.85
7.2.90.0120.00516.57
7.2.80.0090.00616.89
7.2.70.0090.00616.48
7.2.60.0090.00716.92
7.2.50.0040.01216.98
7.2.40.0110.00716.55
7.2.30.0150.00316.75
7.2.20.0000.01416.90
7.2.10.0030.00716.54
7.2.00.0040.00717.14
7.1.250.0090.00915.67
7.1.200.0070.00715.75
7.1.70.0030.00717.01
7.1.60.0040.01217.32
7.1.50.0100.01417.13
7.1.00.0100.07022.31
7.0.200.0040.00816.85
7.0.140.0100.06722.08
7.0.110.0630.06320.00
7.0.100.0570.08319.98
7.0.90.0800.05320.11
7.0.80.0870.05020.00
7.0.70.0930.06719.96
7.0.60.0800.06320.07
7.0.50.0900.07319.94
7.0.40.0000.05319.74
7.0.30.0030.08319.79
7.0.20.0070.05019.86
7.0.10.0070.08319.71
7.0.00.0170.06719.81
5.6.280.0030.07720.79
5.6.260.0130.07720.68
5.6.250.0100.04320.68
5.6.240.0100.08320.71
5.6.230.0100.08020.55
5.6.220.0070.08020.56
5.6.210.0100.08320.63
5.6.200.0130.05320.57
5.6.190.0070.08320.68
5.6.180.0130.07720.71
5.6.170.0130.07020.57
5.6.160.0030.09020.69
5.6.150.0030.05320.60
5.6.140.0100.08020.66
5.6.130.0070.07320.56
5.6.120.0130.08320.86
5.6.110.0100.05020.62
5.6.100.0100.08020.70
5.6.90.0200.06720.67
5.6.80.0100.07320.05
5.6.70.0070.07320.08
5.6.60.0070.08020.01
5.6.50.0100.07020.09
5.6.40.0100.06020.01
5.6.30.0030.08320.05
5.6.20.0170.07019.98
5.6.10.0030.08019.95
5.6.00.0030.08320.02
5.5.380.0070.08320.47
5.5.370.0130.07020.38
5.5.360.0030.07020.36
5.5.350.0130.07720.45
5.5.340.0130.08020.75
5.5.330.0170.03321.01
5.5.320.0100.08321.00
5.5.310.0070.07321.05
5.5.300.0100.08020.89
5.5.290.0100.08020.89
5.5.280.0200.06720.77
5.5.270.0130.07320.87
5.5.260.0130.06320.94
5.5.250.0000.06320.72
5.5.240.0130.06720.21
5.5.230.0030.08020.36
5.5.220.0030.05320.38
5.5.210.0130.07720.18
5.5.200.0000.08020.18
5.5.190.0130.06320.14
5.5.180.0100.07320.31
5.5.160.0030.08020.30
5.5.150.0170.07020.14
5.5.140.0030.05020.14
5.5.130.0130.06320.08
5.5.120.0070.08320.31
5.5.110.0030.08020.39
5.5.100.0100.05320.12
5.5.90.0070.06720.05
5.5.80.0070.04320.17
5.5.70.0170.07320.02
5.5.60.0070.07720.11
5.5.50.0100.06720.22
5.5.40.0030.08020.04
5.5.30.0070.05720.09
5.5.20.0030.04720.09
5.5.10.0030.04320.23
5.5.00.0100.03320.11
5.4.450.0100.07319.51
5.4.440.0030.05719.28
5.4.430.0130.06719.48
5.4.420.0070.04319.63
5.4.410.0100.08019.53
5.4.400.0130.08019.36
5.4.390.0070.06718.98
5.4.380.0000.06719.19
5.4.370.0030.08319.16
5.4.360.0070.07019.16
5.4.350.0070.07318.95
5.4.340.0100.06719.31
5.4.320.0130.06318.99
5.4.310.0170.06319.16
5.4.300.0030.07719.21
5.4.290.0030.08019.03
5.4.280.0100.07719.01
5.4.270.0130.04319.00
5.4.260.0100.05019.30
5.4.250.0000.06319.04
5.4.240.0130.06719.00
5.4.230.0070.08318.97
5.4.220.0200.06019.01
5.4.210.0170.06719.00
5.4.200.0100.07319.08
5.4.190.0100.07319.32
5.4.180.0000.08319.00
5.4.170.0030.05319.23
5.4.160.0030.04718.97
5.4.150.0000.05018.96
5.4.140.0070.03316.47
5.4.130.0100.03016.55
5.4.120.0030.03716.32
5.4.110.0030.04016.43
5.4.100.0030.03716.48
5.4.90.0000.03716.59
5.4.80.0030.03316.40
5.4.70.0000.03716.46
5.4.60.0070.02716.25
5.4.50.0070.06016.54
5.4.40.0000.05016.61
5.4.30.0070.02716.40
5.4.20.0000.03716.53
5.4.10.0000.05716.34
5.4.00.0000.05315.89
5.3.290.0100.07714.69
5.3.280.0100.07014.61
5.3.270.0100.08014.64
5.3.260.0000.04014.61
5.3.250.0000.04014.68
5.3.240.0100.03714.73
5.3.230.0070.03314.45
5.3.220.0000.04014.56
5.3.210.0000.04714.79
5.3.200.0000.04014.54
5.3.190.0100.05314.42
5.3.180.0030.03714.55
5.3.170.0030.03714.70
5.3.160.0030.04014.55
5.3.150.0030.03714.56
5.3.140.0000.06714.69
5.3.130.0070.04314.52
5.3.120.0000.04014.63
5.3.110.0030.08314.67
5.3.100.0000.04014.04
5.3.90.0030.07314.02
5.3.80.0130.03013.97
5.3.70.0100.03014.00
5.3.60.0000.04014.14
5.3.50.0070.07714.02
5.3.40.0000.05013.95
5.3.30.0030.03013.91
5.3.20.0070.07013.69
5.3.10.0070.04713.64
5.3.00.0070.05313.49
5.2.170.0070.03711.93
5.2.160.0030.02711.93
5.2.150.0000.03311.93
5.2.140.0000.05711.93
5.2.130.0030.02711.93
5.2.120.0000.02711.93
5.2.110.0070.03011.93
5.2.100.0030.02711.93
5.2.90.0030.02311.93
5.2.80.0030.02711.93
5.2.70.0100.02711.93
5.2.60.0000.03711.93
5.2.50.0100.05711.93
5.2.40.0030.02311.93
5.2.30.0030.03011.93
5.2.20.0030.02711.93
5.2.10.0030.04311.93
5.2.00.0030.02711.93
5.1.60.0030.02311.93
5.1.50.0030.02011.93
5.1.40.0030.02711.93
5.1.30.0000.02711.93
5.1.20.0030.02311.93
5.1.10.0000.03011.93
5.1.00.0000.03011.93
5.0.50.0000.02011.93
5.0.40.0030.01711.93
5.0.30.0000.04011.93
5.0.20.0030.02711.93
5.0.10.0030.02311.93
5.0.00.0000.04311.93
4.4.90.0000.01711.93
4.4.80.0030.01311.93
4.4.70.0000.01711.93
4.4.60.0000.01711.93
4.4.50.0030.01311.93
4.4.40.0000.02311.93
4.4.30.0030.01311.93
4.4.20.0000.01711.93
4.4.10.0000.01711.93
4.4.00.0070.01711.93
4.3.110.0000.01711.93
4.3.100.0030.01311.93
4.3.90.0000.01311.93
4.3.80.0000.02311.93
4.3.70.0030.01311.93
4.3.60.0000.01711.93
4.3.50.0030.02011.93
4.3.40.0030.05311.93
4.3.30.0030.03011.93
4.3.20.0030.02311.93
4.3.10.0000.03711.93
4.3.00.0000.02711.93

preferences:
50.74 ms | 401 KiB | 5 Q