3v4l.org

run code in 300+ PHP versions simultaneously
<?php $formval = "0"; if (isset($formval)) { echo "is set\n"; } $defined = null; var_dump(is_null($defined)); var_dump(is_null($undefined));

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)
8.3.60.0070.01416.50
8.3.50.0120.00822.06
8.3.40.0040.01418.45
8.3.30.0100.00318.90
8.3.20.0080.00019.91
8.3.10.0070.00021.73
8.3.00.0040.00419.26
8.2.180.0040.01118.16
8.2.170.0070.00722.96
8.2.160.0100.00320.57
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0080.00022.27
8.2.110.0070.00320.39
8.2.100.0080.00417.91
8.2.90.0000.00817.63
8.2.80.0060.00318.98
8.2.70.0040.00417.93
8.2.60.0070.00017.93
8.2.50.0000.00818.10
8.2.40.0080.00022.16
8.2.30.0050.00317.98
8.2.20.0000.00717.55
8.2.10.0070.00017.95
8.2.00.0040.00417.77
8.1.280.0100.00725.92
8.1.270.0000.01323.97
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0030.00623.91
8.1.230.0090.00323.86
8.1.220.0090.00017.74
8.1.210.0060.00318.77
8.1.200.0060.00317.22
8.1.190.0000.00817.11
8.1.180.0080.00018.10
8.1.170.0000.00818.50
8.1.160.0000.00721.84
8.1.150.0050.00318.47
8.1.140.0000.00717.38
8.1.130.0070.00017.66
8.1.120.0000.00717.44
8.1.110.0000.00817.37
8.1.100.0000.00917.27
8.1.90.0050.00217.38
8.1.80.0080.00017.41
8.1.70.0070.00017.34
8.1.60.0000.01217.55
8.1.50.0050.00317.48
8.1.40.0000.00717.41
8.1.30.0050.00317.46
8.1.20.0040.00417.52
8.1.10.0000.00717.53
8.1.00.0040.00417.48
8.0.300.0080.00019.73
8.0.290.0080.00016.85
8.0.280.0030.00318.32
8.0.270.0030.00317.25
8.0.260.0030.00317.16
8.0.250.0030.00316.79
8.0.240.0030.00317.00
8.0.230.0030.00516.90
8.0.220.0070.00016.86
8.0.210.0000.00716.93
8.0.200.0060.00016.82
8.0.190.0090.00016.94
8.0.180.0040.00416.75
8.0.170.0000.00716.93
8.0.160.0040.00416.81
8.0.150.0000.00716.79
8.0.140.0040.00416.81
8.0.130.0030.00313.26
8.0.120.0080.00016.87
8.0.110.0000.00716.89
8.0.100.0070.00016.67
8.0.90.0000.00716.74
8.0.80.0090.00616.84
8.0.70.0000.00716.70
8.0.60.0040.00416.99
8.0.50.0000.00716.79
8.0.30.0100.00817.05
8.0.20.0130.00817.40
8.0.10.0000.00716.93
8.0.00.0080.01016.87
7.4.330.0000.00515.01
7.4.320.0000.00616.50
7.4.300.0030.00316.53
7.4.290.0000.00716.33
7.4.280.0040.00416.50
7.4.270.0000.00716.29
7.4.260.0000.00716.52
7.4.250.0070.00016.38
7.4.240.0020.00516.40
7.4.230.0040.00416.26
7.4.220.0110.00616.60
7.4.210.0060.00916.45
7.4.200.0070.00016.31
7.4.190.0000.00716.61
7.4.160.0070.01316.73
7.4.150.0120.00617.40
7.4.140.0050.01517.86
7.4.130.0080.01016.64
7.4.120.0070.00916.51
7.4.110.0180.00016.35
7.4.100.0090.00916.41
7.4.90.0110.00716.57
7.4.80.0090.01219.39
7.4.70.0120.00616.35
7.4.60.0030.01316.32
7.4.50.0000.00416.55
7.4.40.0180.00316.46
7.4.30.0100.00716.46
7.4.00.0100.00314.98
7.3.330.0000.00712.94
7.3.320.0000.00513.08
7.3.310.0030.00316.06
7.3.300.0030.00316.10
7.3.290.0040.01116.23
7.3.280.0070.01016.16
7.3.270.0000.01717.40
7.3.260.0140.00316.14
7.3.250.0110.00716.29
7.3.240.0130.00316.33
7.3.230.0060.00916.39
7.3.210.0120.00616.34
7.3.200.0130.00919.39
7.3.190.0090.00916.32
7.3.180.0060.00916.43
7.3.170.0060.00916.36
7.3.160.0070.00716.34
7.3.120.0040.00714.92
7.2.330.0070.01116.37
7.2.320.0130.01216.52
7.2.310.0030.01316.35
7.2.300.0060.00916.49
7.2.290.0090.00616.57
7.2.00.0060.00619.32
7.1.100.0040.00718.28
7.1.70.0000.00817.09
7.1.60.0070.01519.46
7.1.50.0120.00634.85
7.1.00.0030.07722.57
7.0.200.0090.00016.29
7.0.140.0030.07022.12
7.0.60.0070.08319.93
7.0.50.0070.07317.78
7.0.40.0070.09320.04
7.0.30.0270.08320.17
7.0.20.0200.06320.12
7.0.10.0000.06720.16
7.0.00.0000.08720.00
5.6.280.0030.07321.14
5.6.210.0100.07720.56
5.6.200.0100.07718.12
5.6.190.0070.04720.61
5.6.180.0130.07320.64
5.6.170.0370.07020.48
5.6.160.0030.06720.44
5.6.150.0100.08018.16
5.6.140.0030.05318.21
5.6.130.0000.04718.07
5.6.120.0070.08721.14
5.6.110.0100.06721.06
5.6.100.0130.08020.99
5.6.90.0070.08020.96
5.6.80.0130.06720.50
5.5.350.2470.03720.49
5.5.340.0100.07317.92
5.5.330.0030.04320.36
5.5.320.0370.06020.27
5.5.310.0370.05720.50
5.5.300.0000.04018.02
5.5.290.0030.07717.90
5.5.280.0070.05020.76
5.5.270.0100.08020.86
5.5.260.0030.06720.95
5.5.250.0030.04320.65
5.5.240.0030.08020.07
5.4.450.0800.06319.46
5.4.440.0630.07319.24
5.4.430.0770.06019.58
5.4.420.0500.06019.58
5.4.410.0630.05319.39
5.4.400.0630.05719.13
5.4.390.0730.06018.82
5.4.380.0300.04018.74
5.4.370.0070.05718.52
5.4.360.0200.05018.72
5.4.350.0170.05318.68
5.4.340.0170.05018.69
5.4.320.0050.03912.45
5.4.310.0080.04212.45
5.4.300.0040.03812.46
5.4.290.0040.04112.45
5.4.280.0060.03512.34
5.4.270.0030.03812.34
5.4.260.0070.03912.34
5.4.250.0040.04112.34
5.4.240.0060.03712.34
5.4.230.0080.03712.34
5.4.220.0090.03312.34
5.4.210.0070.03612.34
5.4.200.0050.03812.34
5.4.190.0020.04012.34
5.4.180.0040.03812.34
5.4.170.0060.03712.34
5.4.160.0050.03812.34
5.4.150.0080.03712.34
5.4.140.0050.03812.02
5.4.130.0100.03112.01
5.4.120.0030.03711.96
5.4.110.0060.03411.96
5.4.100.0040.03711.96
5.4.90.0060.03611.96
5.4.80.0010.04111.96
5.4.70.0060.03411.96
5.4.60.0090.03211.96
5.4.50.0100.03111.96
5.4.40.0060.04211.95
5.4.30.0060.05011.95
5.4.20.0080.03411.95
5.4.10.0080.03211.95
5.4.00.0060.03511.44
5.3.290.0050.04012.80
5.3.280.0060.03812.71
5.3.270.0060.03912.72
5.3.260.0040.05112.72
5.3.250.0040.04112.72
5.3.240.0040.04112.72
5.3.230.0060.03912.71
5.3.220.0040.03912.68
5.3.210.0080.03612.68
5.3.200.0040.03712.68
5.3.190.0060.03712.67
5.3.180.0050.03712.67
5.3.170.0040.03912.66
5.3.160.0020.04012.67
5.3.150.0060.03812.68
5.3.140.0060.03712.66
5.3.130.0080.03712.66
5.3.120.0060.03912.66
5.3.110.0040.04112.66
5.3.100.0020.04112.12
5.3.90.0050.03612.08
5.3.80.0070.03412.07
5.3.70.0070.03512.07
5.3.60.0050.04112.07
5.3.50.0070.03612.00
5.3.40.0070.03512.00
5.3.30.0050.03511.94
5.3.20.0050.03611.72
5.3.10.0060.03511.69
5.3.00.0080.03411.68
5.2.170.0040.0319.18
5.2.160.0060.0359.18
5.2.150.0020.0349.18
5.2.140.0040.0309.17
5.2.130.0020.0319.13
5.2.120.0060.0279.13
5.2.110.0070.0379.14
5.2.100.0040.0309.14
5.2.90.0030.0319.14
5.2.80.0060.0299.13
5.2.70.0060.0299.13
5.2.60.0040.0319.09
5.2.50.0030.0329.05
5.2.40.0020.0319.03
5.2.30.0040.0309.01
5.2.20.0050.0288.99
5.2.10.0020.0308.92
5.2.00.0030.0308.77
5.1.60.0020.0268.06
5.1.50.0040.0248.05
5.1.40.0060.0238.04
5.1.30.0030.0278.39
5.1.20.0030.0278.41
5.1.10.0050.0258.14
5.1.00.0050.0258.13
5.0.50.0040.0206.61
5.0.40.0040.0186.47
5.0.30.0030.0316.28
5.0.20.0020.0216.25
5.0.10.0040.0196.23
5.0.00.0040.0306.23
4.4.90.0040.0144.78
4.4.80.0050.0134.76
4.4.70.0020.0164.75
4.4.60.0030.0154.76
4.4.50.0040.0154.77
4.4.40.0020.0274.71
4.4.30.0030.0164.76
4.4.20.0050.0154.85
4.4.10.0040.0154.85
4.4.00.0020.0274.75
4.3.110.0040.0154.67
4.3.100.0050.0134.66
4.3.90.0030.0154.63
4.3.80.0020.0254.58
4.3.70.0050.0134.63
4.3.60.0030.0154.63
4.3.50.0020.0164.63
4.3.40.0050.0224.54
4.3.30.0030.0153.28
4.3.20.0020.0163.26
4.3.10.0050.0133.22
4.3.00.0130.0239.42

preferences:
43.93 ms | 401 KiB | 5 Q