3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'bar'; $bar = &$foo; $x = get_defined_vars(); var_dump($x['bar']); $x['bar'] = 'herp'; var_dump($x['foo']); var_dump($x['bar']); var_dump($foo);

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)
8.3.60.0070.00718.43
8.3.50.0080.01121.08
8.3.40.0110.00418.70
8.3.30.0070.00719.12
8.3.20.0040.00420.16
8.3.10.0060.00323.53
8.3.00.0080.00020.82
8.2.180.0120.00618.29
8.2.170.0130.00722.96
8.2.160.0090.00620.52
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0000.00820.79
8.2.110.0150.00622.31
8.2.100.0030.00919.45
8.2.90.0090.00019.13
8.2.80.0000.00917.97
8.2.70.0030.00717.50
8.2.60.0000.00817.80
8.2.50.0040.00418.07
8.2.40.0030.00619.82
8.2.30.0070.00018.15
8.2.20.0030.00517.66
8.2.10.0000.00718.04
8.2.00.0040.00417.58
8.1.280.0140.00725.92
8.1.270.0000.00823.92
8.1.260.0050.00326.35
8.1.250.0070.00028.09
8.1.240.0060.00322.14
8.1.230.0070.00319.08
8.1.220.0000.00717.74
8.1.210.0040.00418.77
8.1.200.0070.00317.23
8.1.190.0040.00417.22
8.1.180.0090.00018.10
8.1.170.0040.00418.59
8.1.160.0030.00521.86
8.1.150.0050.00318.62
8.1.140.0000.00817.29
8.1.130.0040.00417.30
8.1.120.0040.00417.38
8.1.110.0040.00417.35
8.1.100.0040.00417.36
8.1.90.0040.00417.41
8.1.80.0040.00417.30
8.1.70.0030.00317.39
8.1.60.0000.00817.46
8.1.50.0000.00917.39
8.1.40.0040.00417.44
8.1.30.0060.00317.58
8.1.20.0040.00417.48
8.1.10.0050.00317.39
8.1.00.0040.00417.45
8.0.300.0000.00718.77
8.0.290.0000.00816.89
8.0.280.0030.00318.38
8.0.270.0000.00717.18
8.0.260.0070.00016.70
8.0.250.0000.00716.90
8.0.240.0070.00416.89
8.0.230.0030.00316.78
8.0.220.0040.00416.85
8.0.210.0070.00016.71
8.0.200.0050.00216.91
8.0.190.0000.00716.90
8.0.180.0050.00316.74
8.0.170.0030.00616.74
8.0.160.0030.00516.67
8.0.150.0070.00016.77
8.0.140.0040.00416.75
8.0.130.0000.00513.25
8.0.120.0000.00816.74
8.0.110.0060.00316.64
8.0.100.0060.00316.77
8.0.90.0000.00716.70
8.0.80.0060.00916.88
8.0.70.0040.00416.80
8.0.60.0040.00416.89
8.0.50.0040.00416.71
8.0.30.0090.01217.04
8.0.20.0130.00517.40
8.0.10.0050.00216.96
8.0.00.0100.00716.74
7.4.330.0000.00615.00
7.4.320.0030.00316.40
7.4.300.0000.00616.44
7.4.290.0050.00216.34
7.4.280.0000.00716.50
7.4.270.0040.00416.39
7.4.260.0020.00516.45
7.4.250.0040.00416.30
7.4.240.0030.00316.40
7.4.230.0000.00716.25
7.4.220.0040.01416.47
7.4.210.0030.01116.51
7.4.200.0050.00216.35
7.4.190.0030.00316.61
7.4.160.0060.00916.53
7.4.150.0060.01117.40
7.4.140.0060.01217.86
7.4.130.0070.00916.41
7.4.120.0100.00916.50
7.4.110.0090.01316.47
7.4.100.0130.00516.30
7.4.90.0030.01316.52
7.4.80.0130.00719.39
7.4.70.0090.00816.46
7.4.60.0120.01216.40
7.4.50.0030.00516.37
7.4.40.0100.01016.22
7.4.30.0030.01316.21
7.4.00.0070.01114.88
7.3.330.0030.00312.95
7.3.320.0000.00613.09
7.3.310.0070.00016.18
7.3.300.0070.00016.18
7.3.290.0060.00816.37
7.3.280.0070.01216.31
7.3.270.0060.01117.40
7.3.260.0110.00616.21
7.3.250.0090.00816.17
7.3.240.0060.01016.57
7.3.230.0130.01016.59
7.3.210.0070.01016.38
7.3.200.0120.00619.39
7.3.190.0120.00916.20
7.3.180.0090.00616.53
7.3.170.0060.01016.27
7.3.160.0080.00816.38
7.3.120.0090.00714.66
7.3.110.0080.01014.69
7.3.100.0030.00914.93
7.3.90.0070.00614.75
7.3.80.0090.00414.68
7.3.70.0130.00314.43
7.3.60.0110.00014.62
7.3.50.0050.01014.81
7.3.40.0090.00514.65
7.3.30.0070.01014.68
7.3.20.0030.00916.44
7.3.10.0090.00416.71
7.3.00.0020.01216.63
7.2.330.0050.01216.55
7.2.320.0040.02116.41
7.2.310.0130.00816.70
7.2.300.0090.00916.14
7.2.290.0060.01016.68
7.2.250.0060.01214.86
7.2.240.0090.01114.72
7.2.230.0070.00715.12
7.2.220.0050.01014.83
7.2.210.0050.00814.94
7.2.200.0080.00814.76
7.2.190.0030.00915.08
7.2.180.0070.00814.98
7.2.170.0050.01014.89
7.1.330.0030.01015.93
7.1.320.0070.00415.93
7.1.310.0020.01115.67
7.1.300.0070.00515.71
7.1.290.0040.00915.82
7.1.280.0080.00615.73
7.1.270.0080.00715.62
7.1.260.0100.00315.81
7.1.100.0090.00618.08
7.1.70.0000.00717.14
7.1.60.0060.01819.46
7.1.50.0140.01117.02
7.1.00.0070.07322.36
7.0.200.0000.00716.73
7.0.140.0070.07022.04
7.0.60.0170.07020.03
7.0.50.0030.04717.78
7.0.40.0100.08019.96
7.0.30.0270.07020.02
7.0.20.0270.08020.19
7.0.10.0030.06020.16
7.0.00.0070.08720.12
5.6.280.0000.07720.88
5.6.210.0070.05320.70
5.6.200.0130.08018.22
5.6.190.0070.04320.57
5.6.180.0070.07720.61
5.6.170.0130.06020.49
5.6.160.0030.06020.32
5.6.150.0000.09018.17
5.6.140.0070.08018.16
5.6.130.0170.07018.08
5.6.120.0070.08321.01
5.6.110.0130.04721.00
5.6.100.0070.08021.00
5.6.90.0100.07721.12
5.6.80.0170.06720.52
5.5.350.0030.08020.39
5.5.340.0030.04017.98
5.5.330.0130.08020.38
5.5.320.0070.03720.29
5.5.310.0270.08320.18
5.5.300.0030.04018.00
5.5.290.0000.04318.02
5.5.280.0070.04020.78
5.5.270.0070.08020.78
5.5.260.0000.04320.96
5.5.250.0130.07320.69
5.5.240.0030.04020.23
5.4.450.0630.05319.33
5.4.440.0400.06019.53
5.4.430.0670.05719.14
5.4.420.0700.05719.58
5.4.410.0900.04719.42
5.4.400.1000.05319.00
5.4.390.1000.05318.89
5.4.380.0100.08018.78
5.4.370.0200.05018.67
5.4.360.0070.06318.68
5.4.350.0200.06718.50
5.4.340.0230.06018.62
5.4.320.0060.04212.45
5.4.310.0020.04112.45
5.4.300.0050.03712.45
5.4.290.0100.03512.45
5.4.280.0060.03712.34
5.4.270.0050.03812.35
5.4.260.0050.03812.34
5.4.250.0110.03312.35
5.4.240.0050.03712.34
5.4.230.0040.03912.34
5.4.220.0040.04112.34
5.4.210.0060.04012.34
5.4.200.0090.03712.34
5.4.190.0080.03512.33
5.4.180.0080.03312.34
5.4.170.0050.03612.35
5.4.160.0090.03212.34
5.4.150.0060.03612.33
5.4.140.0050.03812.02
5.4.130.0090.03212.01
5.4.120.0070.03311.96
5.4.110.0070.03511.97
5.4.100.0050.03711.96
5.4.90.0070.03611.96
5.4.80.0070.03611.96
5.4.70.0090.03111.96
5.4.60.0050.03511.96
5.4.50.0060.03411.96
5.4.40.0040.03611.95
5.4.30.0050.03511.95
5.4.20.0080.03311.95
5.4.10.0070.03611.94
5.4.00.0050.03811.43
5.3.290.0070.03912.80
5.3.280.0070.03812.71
5.3.270.0050.04012.73
5.3.260.0060.04012.72
5.3.250.0070.03612.72
5.3.240.0050.03812.72
5.3.230.0060.03912.71
5.3.220.0090.03512.68
5.3.210.0080.03812.68
5.3.200.0100.03412.68
5.3.190.0080.03712.68
5.3.180.0110.03112.68
5.3.170.0060.03812.67
5.3.160.0030.04012.67
5.3.150.0070.03612.68
5.3.140.0060.03512.66
5.3.130.0040.04012.65
5.3.120.0060.03812.66
5.3.110.0070.03812.66
5.3.100.0080.03412.12
5.3.90.0060.03812.08
5.3.80.0070.04012.07
5.3.70.0050.03712.07
5.3.60.0090.04512.06
5.3.50.0060.04012.00
5.3.40.0040.04512.00
5.3.30.0060.04011.95
5.3.20.0050.03911.72
5.3.10.0100.04911.69
5.3.00.0090.05011.68
5.2.170.0050.0319.18
5.2.160.0060.0439.18
5.2.150.0050.0309.18
5.2.140.0050.0459.18
5.2.130.0050.0299.14
5.2.120.0050.0309.13
5.2.110.0040.0319.14
5.2.100.0050.0319.14
5.2.90.0050.0339.14
5.2.80.0070.0319.13
5.2.70.0070.0339.13
5.2.60.0040.0339.09
5.2.50.0070.0489.05
5.2.40.0080.0429.03
5.2.30.0060.0469.01
5.2.20.0050.0319.00
5.2.10.0050.0328.92
5.2.00.0020.0318.78
5.1.60.0040.0258.07
5.1.50.0080.0348.06
5.1.40.0040.0278.04
5.1.30.0060.0248.39
5.1.20.0050.0258.41
5.1.10.0070.0238.14
5.1.00.0070.0358.14
5.0.50.0030.0306.61
5.0.40.0030.0356.48
5.0.30.0050.0326.29
5.0.20.0040.0206.26
5.0.10.0020.0216.23
5.0.00.0000.0346.23
4.4.90.0010.0174.77
4.4.80.0050.0134.75
4.4.70.0030.0154.75
4.4.60.0020.0154.75
4.4.50.0030.0154.77
4.4.40.0020.0254.71
4.4.30.0010.0174.75
4.4.20.0030.0154.84
4.4.10.0020.0174.85
4.4.00.0040.0254.76
4.3.110.0000.0194.67
4.3.100.0040.0144.66
4.3.90.0030.0154.64
4.3.80.0030.0244.58
4.3.70.0030.0144.63
4.3.60.0020.0164.63
4.3.50.0030.0164.63
4.3.40.0020.0274.53
4.3.30.0010.0173.29
4.3.20.0040.0143.26
4.3.10.0010.0163.22
4.3.00.0070.0236.87

preferences:
39.66 ms | 401 KiB | 5 Q