3v4l.org

run code in 300+ PHP versions simultaneously
<?php $zero = 0; $null = NULL; var_dump(isset($zero)); var_dump(isset($null)); var_dump(empty($zero)); var_dump(empty($null)); var_dump(is_null($zero)); var_dump(is_null($null));

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)
8.3.60.0030.01516.50
8.3.50.0150.00622.94
8.3.40.0070.00718.51
8.3.30.0040.01118.95
8.3.20.0080.00020.33
8.3.10.0080.00023.62
8.3.00.0090.00017.25
8.2.180.0080.00816.38
8.2.170.0030.01422.96
8.2.160.0130.00320.52
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00726.16
8.2.120.0070.00020.95
8.2.110.0040.00422.24
8.2.100.0160.00017.66
8.2.90.0040.00419.09
8.2.80.0000.00817.97
8.2.70.0080.00017.50
8.2.60.0030.00617.80
8.2.50.0040.00418.07
8.2.40.0090.00018.22
8.2.30.0040.00418.09
8.2.20.0000.00717.55
8.2.10.0000.00817.98
8.2.00.0000.00717.71
8.1.280.0070.01125.92
8.1.270.0050.00323.99
8.1.260.0080.00026.35
8.1.250.0050.00228.09
8.1.240.0090.00023.96
8.1.230.0070.00719.07
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00717.35
8.1.190.0040.00417.00
8.1.180.0030.00618.10
8.1.170.0100.00318.53
8.1.160.0000.00721.93
8.1.150.0070.00018.82
8.1.140.0000.00717.42
8.1.130.0000.00717.83
8.1.120.0030.00517.43
8.1.110.0040.00417.42
8.1.100.0000.00717.24
8.1.90.0000.00717.32
8.1.80.0070.00017.27
8.1.70.0030.00317.35
8.1.60.0060.00317.57
8.1.50.0030.00517.47
8.1.40.0030.00617.41
8.1.30.0000.00817.48
8.1.20.0040.00417.42
8.1.10.0070.00017.30
8.1.00.0030.00517.44
8.0.300.0040.00418.77
8.0.290.0070.00016.63
8.0.280.0030.00318.38
8.0.270.0030.00317.14
8.0.260.0030.00317.18
8.0.250.0000.00716.87
8.0.240.0050.00216.86
8.0.230.0030.00316.84
8.0.220.0040.00416.80
8.0.210.0020.00516.82
8.0.200.0030.00316.90
8.0.190.0090.00016.79
8.0.180.0000.00716.72
8.0.170.0060.00316.79
8.0.160.0030.00316.74
8.0.150.0040.00416.78
8.0.140.0060.00316.67
8.0.130.0000.00513.19
8.0.120.0040.00416.82
8.0.110.0020.00516.82
8.0.100.0000.00716.82
8.0.90.0040.00416.77
8.0.80.0110.00716.86
8.0.70.0040.00416.71
8.0.60.0000.00716.71
8.0.50.0040.00416.84
8.0.30.0080.01517.00
8.0.20.0150.00817.40
8.0.10.0000.00717.00
8.0.00.0110.01216.68
7.4.330.0070.00015.00
7.4.320.0000.00616.51
7.4.300.0040.00416.52
7.4.290.0030.00316.34
7.4.280.0000.00716.54
7.4.270.0000.00716.51
7.4.260.0040.00416.31
7.4.250.0050.00216.30
7.4.240.0050.00216.42
7.4.230.0040.00416.60
7.4.220.0160.00616.40
7.4.210.0070.00716.40
7.4.200.0000.00716.59
7.4.160.0060.01016.34
7.4.150.0070.01117.40
7.4.140.0150.00617.86
7.4.130.0080.01116.47
7.4.120.0140.00616.54
7.4.110.0120.00416.49
7.4.100.0080.00816.36
7.4.90.0000.01716.52
7.4.80.0090.00919.39
7.4.70.0030.01616.51
7.4.60.0060.02016.35
7.4.50.0040.00016.32
7.4.40.0100.00616.07
7.4.30.0050.01516.44
7.4.00.0060.00614.79
7.3.330.0050.00212.99
7.3.320.0030.00312.93
7.3.310.0070.00015.93
7.3.300.0030.00316.11
7.3.290.0130.00316.08
7.3.280.0110.00516.10
7.3.270.0090.01017.40
7.3.260.0170.00016.30
7.3.250.0060.01116.24
7.3.240.0080.00816.16
7.3.230.0070.01016.39
7.3.210.0070.01016.43
7.3.200.0130.00619.39
7.3.190.0030.01316.21
7.3.180.0100.00716.16
7.3.170.0040.01116.27
7.3.160.0060.01016.43
7.2.330.0040.01916.57
7.2.320.0130.00516.59
7.2.310.0060.01116.51
7.2.300.0060.01016.55
7.2.290.0090.00616.62
7.2.60.0000.01216.79
7.1.200.0030.01015.86
7.1.100.0040.00818.06
7.1.70.0040.00417.14
7.1.60.0070.01819.40
7.1.50.0070.01016.99
7.1.00.0000.08022.36
7.0.200.0130.00714.94
7.0.140.0070.07322.12
7.0.60.0100.07019.85
7.0.50.0070.05017.80
7.0.40.0100.05020.08
7.0.30.0300.05020.17
7.0.20.0430.07020.16
7.0.10.0070.05020.00
7.0.00.0070.04320.12
5.6.210.0070.07720.50
5.6.200.0030.04018.11
5.6.190.0070.04020.27
5.6.180.4100.03720.41
5.6.170.0330.06720.35
5.6.160.0070.05020.38
5.6.150.0100.04018.09
5.6.140.0070.07718.20
5.6.130.0000.04318.18
5.6.120.0170.07321.01
5.6.110.0130.07721.11
5.6.100.0130.07720.97
5.6.90.0100.04321.11
5.6.80.0170.07020.36
5.6.70.4430.04720.40
5.5.350.0300.07320.39
5.5.340.0130.07317.98
5.5.330.0100.08720.37
5.5.320.3030.04020.18
5.5.310.0270.04020.27
5.5.300.0100.06017.96
5.5.290.0100.03317.87
5.5.280.0170.07320.86
5.5.270.0070.04320.88
5.5.260.0130.07320.83
5.5.250.0230.06020.78
5.5.240.0230.07320.05
5.4.450.0230.04019.54
5.4.440.0430.04019.07
5.4.430.0270.04719.38
5.4.420.0470.04319.13
5.4.410.0200.05019.29
5.4.400.0130.04719.17
5.4.390.0570.03319.22
5.4.380.0770.06718.66
5.4.370.0130.05318.66
5.4.360.0170.05018.68
5.4.350.0230.04718.73
5.4.340.0170.05318.70
5.4.320.0060.04012.45
5.4.310.0070.03612.45
5.4.300.0050.03812.45
5.4.290.0040.03912.45
5.4.280.0050.03512.35
5.4.270.0060.03612.35
5.4.260.0110.03212.35
5.4.250.0030.04512.34
5.4.240.0090.03412.35
5.4.230.0090.03912.34
5.4.220.0080.03612.34
5.4.210.0080.03212.34
5.4.200.0090.04112.34
5.4.190.0060.03812.34
5.4.180.0060.03912.33
5.4.170.0070.03612.34
5.4.160.0080.04012.34
5.4.150.0090.03212.34
5.4.140.0090.04012.02
5.4.130.0060.03512.01
5.4.120.0040.03611.96
5.4.110.0040.03811.96
5.4.100.0050.03611.96
5.4.90.0070.03611.96
5.4.80.0050.03911.96
5.4.70.0030.03711.96
5.4.60.0070.03811.96
5.4.50.0060.04111.96
5.4.40.0040.04111.95
5.4.30.0030.03711.95
5.4.20.0090.03311.95
5.4.10.0080.04611.95
5.4.00.0010.04111.44
5.3.290.0060.03912.80
5.3.280.0050.03912.71
5.3.270.0060.03912.72
5.3.260.0110.04212.72
5.3.250.0060.04312.72
5.3.240.0090.03312.72
5.3.230.0060.04212.70
5.3.220.0050.03712.68
5.3.210.0030.04112.68
5.3.200.0070.03912.68
5.3.190.0040.03912.68
5.3.180.0060.03712.67
5.3.170.0090.03212.67
5.3.160.0090.03812.68
5.3.150.0060.05012.68
5.3.140.0070.03612.66
5.3.130.0040.04212.65
5.3.120.0040.04112.66
5.3.110.0070.03612.66
5.3.100.0060.03912.11
5.3.90.0080.03512.09
5.3.80.0080.04012.07
5.3.70.0040.04112.08
5.3.60.0060.03712.07
5.3.50.0080.03412.00
5.3.40.0050.03712.00
5.3.30.0070.03511.94
5.3.20.0070.04311.72
5.3.10.0090.04611.69
5.3.00.0060.04411.68
5.2.170.0040.0319.18
5.2.160.0050.0289.18
5.2.150.0040.0319.18
5.2.140.0070.0309.17
5.2.130.0050.0289.14
5.2.120.0050.0289.13
5.2.110.0070.0309.14
5.2.100.0080.0389.14
5.2.90.0080.0329.14
5.2.80.0070.0319.14
5.2.70.0030.0319.13
5.2.60.0070.0289.09
5.2.50.0030.0319.06
5.2.40.0050.0289.04
5.2.30.0060.0299.01
5.2.20.0030.0299.00
5.2.10.0060.0308.92
5.2.00.0050.0338.77
5.1.60.0040.0238.06
5.1.50.0060.0228.05
5.1.40.0040.0248.04
5.1.30.0030.0268.39
5.1.20.0030.0278.41
5.1.10.0030.0278.13
5.1.00.0040.0258.13
5.0.50.0040.0206.61
5.0.40.0020.0216.47
5.0.30.0020.0336.29
5.0.20.0030.0206.26
5.0.10.0040.0226.23
5.0.00.0030.0316.23
4.4.90.0020.0164.78
4.4.80.0000.0184.75
4.4.70.0030.0194.75
4.4.60.0040.0154.75
4.4.50.0040.0144.77
4.4.40.0020.0264.71
4.4.30.0020.0164.76
4.4.20.0040.0144.84
4.4.10.0030.0154.85
4.4.00.0030.0244.76
4.3.110.0000.0184.67
4.3.100.0050.0164.66
4.3.90.0020.0174.63
4.3.80.0020.0294.59
4.3.70.0010.0174.63
4.3.60.0030.0144.63
4.3.50.0030.0244.63
4.3.40.0020.0244.54
4.3.30.0030.0183.29
4.3.20.0030.0153.26
4.3.10.0020.0163.22
4.3.00.0200.01015.98

preferences:
39.67 ms | 401 KiB | 5 Q