3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Dictionary { private $kMap; private $vMap; private $kvHashMap; private $vkHashMap; public function add($k, $v) { $kHash = spl_object_hash($k); $vHash = spl_object_hash($v); $this->kMap[$kHash] = $k; $this->vMap[$vHash] = $v; $this->kvHashMap[$kHash] = $vHash; $this->vkHashMap[$vHash] = $kHash; } public function get($k) { $kHash = spl_object_hash($k); if (isset($this->kvHashMap[$kHash])) { $vHash = $this->kvHashMap[$kHash]; if (isset($this->vMap[$vHash])) { return $this->vMap[$vHash]; } } return null; } public function getKey($v) { $vHash = spl_object_hash($v); if (isset($this->vkHashMap[$vHash])) { $kHash = $this->vkHashMap[$vHash]; if (isset($this->kMap[$kHash])) { return $this->kMap[$kHash]; } } return null; } } $dictionary = new Dictionary(); $k = (object) ['i' => 'am a key']; $v = (object) ['i' => 'am a value']; $dictionary->add($k, $v); var_dump($dictionary->get($k)); var_dump($dictionary->getKey($v));

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)
8.3.40.0140.00018.93
8.3.30.0070.00719.24
8.3.20.0040.00420.17
8.3.10.0040.00420.39
8.3.00.0070.00319.50
8.2.170.0040.01122.96
8.2.160.0120.00320.53
8.2.150.0050.00324.18
8.2.140.0000.00924.66
8.2.130.0040.00426.16
8.2.120.0060.00320.95
8.2.110.0030.00621.05
8.2.100.0030.00717.97
8.2.90.0030.00619.28
8.2.80.0000.00817.97
8.2.70.0060.00317.63
8.2.60.0000.00818.04
8.2.50.0050.01018.07
8.2.40.0000.00718.28
8.2.30.0040.00419.36
8.2.20.0050.00317.77
8.2.10.0000.00817.99
8.2.00.0040.00417.81
8.1.270.0060.00323.68
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0030.00723.97
8.1.230.0080.00419.04
8.1.220.0080.00017.74
8.1.210.0050.00318.77
8.1.200.0110.00317.25
8.1.190.0050.00317.23
8.1.180.0030.00518.10
8.1.170.0050.00318.66
8.1.160.0060.00322.01
8.1.150.0040.00418.86
8.1.140.0040.00417.28
8.1.130.0030.00517.76
8.1.120.0040.00417.37
8.1.110.0040.00417.49
8.1.100.0040.00417.45
8.1.90.0030.00517.38
8.1.80.0070.00317.45
8.1.70.0040.00417.37
8.1.60.0050.00317.58
8.1.50.0030.00617.57
8.1.40.0000.00817.47
8.1.30.0050.00317.64
8.1.20.0000.00817.66
8.1.10.0040.00417.47
8.1.00.0040.00417.42
8.0.300.0000.00818.77
8.0.290.0000.00716.63
8.0.280.0000.00918.37
8.0.270.0030.00317.21
8.0.260.0060.00017.28
8.0.250.0070.00016.95
8.0.240.0000.00716.94
8.0.230.0000.00717.02
8.0.220.0000.00716.90
8.0.210.0070.00016.88
8.0.200.0040.00417.01
8.0.190.0040.00416.99
8.0.180.0040.00416.94
8.0.170.0030.00616.98
8.0.160.0000.00716.79
8.0.150.0000.00716.85
8.0.140.0040.00416.91
8.0.130.0080.00013.35
8.0.120.0000.00716.88
8.0.110.0040.00416.92
8.0.100.0030.00516.98
8.0.90.0040.00416.96
8.0.80.0110.00616.90
8.0.70.0000.00716.71
8.0.60.0060.00316.73
8.0.50.0080.00016.91
8.0.30.0120.00716.86
8.0.20.0140.01017.40
8.0.10.0040.00417.02
8.0.00.0090.01116.66
7.4.330.0020.00215.09
7.4.320.0030.00316.53
7.4.300.0000.00616.47
7.4.290.0030.00316.51
7.4.280.0030.00716.52
7.4.270.0070.00016.67
7.4.260.0040.00416.60
7.4.250.0000.00816.48
7.4.240.0020.00516.62
7.4.230.0040.00416.73
7.4.220.0130.00716.55
7.4.210.0080.01216.71
7.4.200.0030.00316.64
7.4.160.0120.00416.38
7.4.150.0050.01417.40
7.4.140.0060.01117.86
7.4.130.0080.00816.53
7.4.120.0070.01016.53
7.4.110.0060.01016.58
7.4.100.0130.00416.56
7.4.90.0150.00916.54
7.4.80.0100.01019.39
7.4.70.0100.00716.59
7.4.60.0120.00816.60
7.4.50.0040.00416.50
7.4.40.0130.01016.67
7.4.30.0060.01016.39
7.4.00.0070.01115.13
7.3.330.0050.00013.46
7.3.320.0070.00013.18
7.3.310.0040.00416.29
7.3.300.0050.00216.40
7.3.290.0130.00316.45
7.3.280.0090.00716.48
7.3.270.0000.01917.40
7.3.260.0120.00616.68
7.3.250.0150.00716.54
7.3.240.0130.00416.38
7.3.230.0070.01016.47
7.3.210.0130.00316.47
7.3.200.0100.00719.39
7.3.190.0120.00916.57
7.3.180.0100.00716.77
7.3.170.0120.00916.51
7.3.160.0060.00916.48
7.3.120.0060.00615.10
7.3.110.0070.01114.84
7.3.100.0080.00314.96
7.3.90.0100.01014.86
7.3.80.0000.01414.88
7.3.70.0090.00014.77
7.3.60.0060.00914.96
7.3.50.0000.01614.91
7.3.40.0090.00614.88
7.3.30.0120.00314.63
7.3.20.0000.01416.67
7.3.10.0050.00816.78
7.3.00.0060.00716.58
7.2.330.0060.01216.71
7.2.320.0190.00616.69
7.2.310.0100.00716.48
7.2.300.0060.01316.52
7.2.290.0130.01016.58
7.2.250.0060.01315.26
7.2.240.0030.01414.88
7.2.230.0060.00915.05
7.2.220.0030.01615.06
7.2.210.0030.01315.28
7.2.200.0070.00715.18
7.2.190.0000.01315.13
7.2.180.0060.00315.10
7.2.170.0130.00315.11
7.2.130.0000.01117.09
7.2.120.0080.00817.13
7.2.110.0040.01116.99
7.2.100.0000.00816.83
7.2.90.0070.00716.99
7.2.80.0030.01017.16
7.2.70.0030.00616.76
7.2.60.0060.00917.02
7.2.50.0030.01016.98
7.2.40.0090.00616.89
7.2.30.0040.01116.70
7.2.20.0080.00416.70
7.2.10.0030.01416.67
7.2.00.0080.00417.04
7.1.330.0030.01315.89
7.1.320.0060.00615.75
7.1.310.0090.00615.83
7.1.300.0070.00715.59
7.1.290.0060.00615.81
7.1.280.0060.00915.88
7.1.270.0060.00315.76
7.1.260.0060.00615.97
7.1.250.0060.00315.84
7.1.70.0080.00417.35
7.1.60.0150.01119.46
7.1.50.0070.00716.96
7.1.00.0030.07722.45
7.0.200.0060.00315.04
7.0.140.0100.06722.17
7.0.60.0100.03319.86
7.0.50.0070.05717.73
7.0.40.0070.08720.09
7.0.30.0130.06020.24
7.0.20.0070.05020.08
7.0.10.0030.04320.09
7.0.00.0200.07720.06
5.6.280.0100.06321.11
5.6.210.0070.06020.69
5.6.200.0030.04318.20
5.6.190.0070.05020.42
5.6.180.0300.08020.77
5.6.170.0230.03720.45
5.6.160.0130.06320.47
5.6.150.0130.06718.18
5.6.140.0070.05018.18
5.6.130.0100.08318.14
5.6.120.0000.04320.91
5.6.110.0100.07321.15
5.6.100.0070.03721.12
5.6.90.0100.05720.98
5.6.80.0030.04320.43
5.5.350.0200.08320.42
5.5.340.0100.03317.93
5.5.330.0100.03720.35
5.5.320.0030.08320.20
5.5.310.0170.04320.30
5.5.300.0030.04318.00
5.5.290.0100.07317.94
5.5.280.0070.06720.78
5.5.270.0070.08020.94
5.5.260.0100.07320.89
5.5.250.0130.06720.80
5.5.240.0170.03320.20
5.4.450.0700.05319.71
5.4.440.0870.05019.61
5.4.430.0930.05319.61
5.4.420.0870.05319.48
5.4.410.0730.06019.33
5.4.400.0600.05019.31
5.4.390.0930.04719.00
5.4.380.0500.07018.61
5.4.370.0300.06018.80
5.4.360.0500.06018.70
5.4.350.0370.04718.57
5.4.340.0330.04318.80
5.4.320.0070.03612.50
5.4.310.0090.04512.50
5.4.300.0080.04612.51
5.4.290.0140.03612.50
5.4.280.0080.04112.40
5.4.270.0050.04212.40
5.4.260.0070.04012.40
5.4.250.0080.04612.40
5.4.240.0070.03512.40
5.4.230.0080.03612.39
5.4.220.0040.03912.39
5.4.210.0070.04112.39
5.4.200.0070.04212.39
5.4.190.0070.03812.39
5.4.180.0080.04312.38
5.4.170.0080.04512.40
5.4.160.0100.03812.39
5.4.150.0080.03812.39
5.4.140.0070.03912.07
5.4.130.0050.03812.06
5.4.120.0100.03412.02
5.4.110.0110.03612.02
5.4.100.0060.04112.02
5.4.90.0070.03612.02
5.4.80.0090.04012.02
5.4.70.0070.03412.01
5.4.60.0080.04912.01
5.4.50.0100.03512.01
5.4.40.0090.04012.00
5.4.30.0080.03912.00
5.4.20.0100.03512.00
5.4.10.0080.03712.00
5.4.00.0060.04611.49
5.3.290.0070.04812.80
5.3.280.0100.03812.71
5.3.270.0120.03612.73
5.3.260.0080.04512.72
5.3.250.0060.03612.71
5.3.240.0050.04212.72
5.3.230.0040.04112.71
5.3.220.0100.04112.68
5.3.210.0070.04112.68
5.3.200.0100.03612.68
5.3.190.0060.04712.68
5.3.180.0090.03912.67
5.3.170.0020.04112.67
5.3.160.0110.03512.68
5.3.150.0060.04112.67
5.3.140.0120.03812.66
5.3.130.0050.03912.66
5.3.120.0070.04512.66
5.3.110.0060.04212.66
5.3.100.0110.03212.14
5.3.90.0070.03512.11
5.3.80.0050.04212.11
5.3.70.0070.03612.11
5.3.60.0060.03912.09
5.3.50.0090.03512.04
5.3.40.0100.03512.04
5.3.30.0090.03611.99
5.3.20.0070.04111.77
5.3.10.0120.03511.75
5.3.00.0110.04311.73
5.2.170.0030.0339.23
5.2.160.0040.0299.23
5.2.150.0060.0299.23
5.2.140.0040.0319.23
5.2.130.0070.0279.19
5.2.120.0090.0279.19
5.2.110.0130.0389.20
5.2.100.0070.0279.19
5.2.90.0040.0309.19
5.2.80.0060.0299.19
5.2.70.0090.0279.19
5.2.60.0050.0309.14
5.2.50.0060.0359.11
5.2.40.0060.0299.09
5.2.30.0070.0289.06
5.2.20.0050.0329.05
5.2.10.0030.0368.96
5.2.00.0060.0318.82
5.1.60.0060.0268.11
5.1.50.0050.0288.11
5.1.40.0060.0248.08
5.1.30.0060.0278.43
5.1.20.0090.0298.45
5.1.10.0090.0268.18
5.1.00.0100.0238.18
5.0.50.0040.0206.66
5.0.40.0060.0176.52
5.0.30.0040.0316.32
5.0.20.0050.0186.29
5.0.10.0050.0186.28
5.0.00.0020.0366.27
4.4.90.0010.0204.77
4.4.80.0030.0174.75
4.4.70.0050.0224.75
4.4.60.0040.0184.75
4.4.50.0020.0174.77
4.4.40.0050.0264.71
4.4.30.0060.0204.76
4.4.20.0020.0194.85
4.4.10.0040.0144.85
4.4.00.0030.0254.76
4.3.110.0030.0164.67
4.3.100.0030.0154.67
4.3.90.0020.0154.63
4.3.80.0060.0304.58
4.3.70.0030.0144.63
4.3.60.0020.0174.63
4.3.50.0030.0194.63
4.3.40.0020.0274.54
4.3.30.0040.0253.30
4.3.20.0020.0183.28
4.3.10.0020.0213.24
4.3.00.0100.0207.90

preferences:
45.33 ms | 400 KiB | 5 Q