3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; echo isset($a)? 'true' : 'false';

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)
8.3.40.0140.00318.60
8.3.30.0140.00318.93
8.3.20.0050.00320.21
8.3.10.0080.00021.80
8.3.00.0110.00322.38
8.2.170.0070.00722.96
8.2.160.0140.00019.07
8.2.150.0040.00424.18
8.2.140.0180.00024.66
8.2.130.0130.00726.16
8.2.120.0080.00019.36
8.2.110.0110.00022.07
8.2.100.0040.00819.64
8.2.90.0000.00819.23
8.2.80.0050.00318.04
8.2.70.0000.00817.50
8.2.60.0000.00817.93
8.2.50.0060.00318.07
8.2.40.0000.00818.28
8.2.30.0040.00418.11
8.2.20.0000.00717.57
8.2.10.0000.00817.66
8.2.00.0000.00917.58
8.1.270.0040.00422.20
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0100.00023.66
8.1.230.0110.00019.07
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0030.00517.28
8.1.180.0040.00418.45
8.1.170.0030.00620.30
8.1.160.0040.00422.11
8.1.150.0050.00218.50
8.1.140.0080.00017.43
8.1.130.0060.00017.66
8.1.120.0000.00717.42
8.1.110.0030.00617.35
8.1.100.0040.00417.38
8.1.90.0000.00717.36
8.1.80.0000.00717.34
8.1.70.0000.00717.39
8.1.60.0090.00317.39
8.1.50.0040.00417.46
8.1.40.0000.00817.36
8.1.30.0040.00417.53
8.1.20.0040.00417.56
8.1.10.0050.00317.39
8.1.00.0060.00317.48
8.0.300.0040.00418.77
8.0.290.0070.00017.15
8.0.280.0070.00018.30
8.0.270.0080.00017.20
8.0.260.0030.00316.84
8.0.250.0000.00716.98
8.0.240.0070.00016.84
8.0.230.0070.00016.94
8.0.220.0070.00016.75
8.0.210.0070.00016.71
8.0.200.0030.00316.88
8.0.190.0060.00316.77
8.0.180.0000.00716.73
8.0.170.0040.00416.81
8.0.160.0000.00716.85
8.0.150.0000.00716.75
8.0.140.0050.00316.79
8.0.130.0000.00613.23
8.0.120.0060.00316.76
8.0.110.0040.00416.80
8.0.100.0000.00816.74
8.0.90.0030.00516.62
8.0.80.0090.00916.82
8.0.70.0000.00816.93
8.0.60.0050.00216.70
8.0.50.0050.00216.83
8.0.30.0140.00717.19
8.0.20.0120.00617.40
8.0.10.0070.00016.94
8.0.00.0070.01116.84
7.4.330.0000.00515.00
7.4.320.0030.00316.48
7.4.300.0040.00416.50
7.4.290.0030.00316.35
7.4.280.0070.00016.41
7.4.270.0000.00616.38
7.4.260.0000.00716.27
7.4.250.0040.00416.41
7.4.240.0040.00316.46
7.4.230.0000.00716.43
7.4.220.0090.00916.49
7.4.210.0100.00716.52
7.4.200.0030.00316.31
7.4.190.0040.00416.69
7.4.160.0140.00616.62
7.4.150.0120.00617.40
7.4.140.0180.00317.86
7.4.130.0120.00816.32
7.4.120.0140.00816.41
7.4.110.0120.00616.51
7.4.100.0090.00916.38
7.4.90.0140.00316.24
7.4.80.0090.01219.39
7.4.70.0140.00316.29
7.4.60.0040.01216.25
7.4.50.0060.00316.35
7.4.40.0080.00622.77
7.4.30.0110.00616.49
7.4.00.0120.00314.72
7.3.330.0050.00012.97
7.3.320.0050.00012.97
7.3.310.0000.00716.19
7.3.300.0040.00416.04
7.3.290.0070.00716.14
7.3.280.0070.00916.16
7.3.270.0040.01317.40
7.3.260.0140.00416.50
7.3.250.0100.00716.17
7.3.240.0060.01716.36
7.3.230.0070.01416.39
7.3.210.0100.00716.39
7.3.200.0080.00819.39
7.3.190.0180.00316.07
7.3.180.0090.00716.33
7.3.170.0030.01316.50
7.3.160.0100.00716.23
7.3.120.0110.00414.72
7.3.10.0120.00616.04
7.3.00.0070.00716.22
7.2.330.0070.01016.64
7.2.320.0160.00316.62
7.2.310.0030.01216.61
7.2.300.0100.00616.54
7.2.290.0070.01416.37
7.2.130.0120.00316.68
7.2.120.0100.00316.63
7.2.110.0060.00616.60
7.2.100.0100.00316.52
7.2.90.0180.00416.34
7.2.80.0150.00616.45
7.2.70.0180.00416.41
7.2.60.0100.01016.56
7.2.50.0120.01216.25
7.2.40.0130.00316.17
7.2.30.0110.00416.33
7.2.20.0060.00816.19
7.2.10.0060.00616.44
7.2.00.0050.00917.93
7.1.250.0090.00315.09
7.1.200.0040.00415.78
7.1.100.0060.00918.04
7.1.70.0060.00916.67
7.1.60.0000.01117.18
7.1.50.0040.01416.83
7.1.00.0000.04022.45
7.0.200.0030.01416.66
7.0.140.0000.07322.05
7.0.60.0030.04319.91
7.0.50.0070.05017.80
7.0.40.0100.08720.09
7.0.30.0170.04720.01
7.0.20.0230.03720.02
7.0.10.0300.05720.02
7.0.00.0000.04320.09
5.6.280.0130.06320.88
5.6.210.0100.08320.46
5.6.200.0030.04018.17
5.6.190.0000.04720.43
5.6.180.4270.03720.61
5.6.170.0330.05720.49
5.6.160.0000.04320.51
5.6.150.0030.08018.12
5.6.140.0000.05318.09
5.6.130.0070.06318.10
5.6.120.0070.04321.01
5.6.110.0130.07721.09
5.6.100.0070.06720.98
5.6.90.0030.07021.13
5.6.80.0200.06020.38
5.6.70.0230.06320.36
5.5.350.0030.07720.39
5.5.340.0130.08017.91
5.5.330.0130.07320.37
5.5.320.0200.08320.27
5.5.310.0270.08020.30
5.5.300.0170.06717.92
5.5.290.0100.03717.95
5.5.280.0000.06320.86
5.5.270.0130.08020.78
5.5.260.0000.04720.96
5.5.250.0070.04020.60
5.5.240.0100.06720.25
5.4.450.0530.06719.45
5.4.440.0530.06319.13
5.4.430.0670.06019.48
5.4.420.0100.06319.64
5.4.410.0770.06019.32
5.4.400.0300.05718.79
5.4.390.0400.06718.50
5.4.380.0230.06018.59
5.4.370.0230.04318.52
5.4.360.0130.05318.68
5.4.350.0130.05318.74
5.4.340.0200.04318.65
5.4.320.0050.03712.45
5.4.310.0050.04012.45
5.4.300.0060.03612.45
5.4.290.0080.04512.45
5.4.280.0050.03712.35
5.4.270.0100.06718.94
5.4.260.0130.06718.75
5.4.250.0030.05718.70
5.4.240.0030.05718.87
5.4.230.0030.06318.72
5.4.220.0170.06718.86
5.4.210.0100.07018.79
5.4.200.0100.06318.73
5.4.190.0070.05018.79
5.4.180.0200.04019.01
5.4.170.0030.05718.91
5.4.160.0170.04018.92
5.4.150.0130.05318.82
5.4.140.0070.06016.30
5.4.130.0070.06016.23
5.4.120.0170.04016.45
5.4.110.0070.07016.34
5.4.100.0070.05016.38
5.4.90.0070.05316.35
5.4.80.0000.06016.24
5.4.70.0100.05316.33
5.4.60.0170.06716.27
5.4.50.0130.06316.46
5.4.40.0070.05016.29
5.4.30.0100.05316.31
5.4.20.0130.04316.39
5.4.10.0200.04716.16
5.4.00.0230.05715.93
5.3.290.0080.03612.80
5.3.280.0200.04314.59
5.3.270.0030.06314.44
5.3.260.0100.07314.61
5.3.250.0030.05314.37
5.3.240.0130.04314.59
5.3.230.0100.04714.48
5.3.220.0030.05314.61
5.3.210.0070.07714.45
5.3.200.0070.05314.50
5.3.190.0130.04314.61
5.3.180.0000.05714.25
5.3.170.0170.04014.33
5.3.160.0070.05314.48
5.3.150.0130.07014.40
5.3.140.0100.06314.46
5.3.130.0100.07714.59
5.3.120.0100.07014.41
5.3.110.0170.06714.24
5.3.100.0070.05714.07
5.3.90.0070.05714.02
5.3.80.0030.07013.93
5.3.70.0100.06014.03
5.3.60.0030.05013.93
5.3.50.0030.05013.89
5.3.40.0030.05713.82
5.3.30.0130.04013.82
5.3.20.0200.03713.66
5.3.10.0100.04713.34
5.3.00.0130.06713.50
5.2.170.0130.04711.05
5.2.160.0100.04011.29
5.2.150.0000.05011.14
5.2.140.0030.06010.97
5.2.130.0130.03311.09
5.2.120.0170.04011.11
5.2.110.0100.05310.93
5.2.100.0030.04311.01
5.2.90.0100.03711.10
5.2.80.0070.04711.00
5.2.70.0230.03310.84
5.2.60.0100.04010.93
5.2.50.0000.04711.18
5.2.40.0100.04711.14
5.2.30.0100.06010.98
5.2.20.0070.05710.89
5.2.10.0070.05010.62
5.2.00.0130.03310.79
5.1.60.0070.03310.05
5.1.50.0070.05010.04
5.1.40.0070.0379.82
5.1.30.0170.04010.42
5.1.20.0100.04010.43
5.1.10.0070.0479.91
5.1.00.0030.05010.13
5.0.50.0130.0279.71
5.0.40.0100.0339.71
5.0.30.0030.0539.71
5.0.20.0130.0179.71
5.0.10.0030.0279.71
5.0.00.0100.0509.71
4.4.90.0000.0339.71
4.4.80.0070.0179.71
4.4.70.0100.0179.71
4.4.60.0030.0239.71
4.4.50.0000.0279.71
4.4.40.0070.0439.71
4.4.30.0070.0279.71
4.4.20.0030.0339.71
4.4.10.0070.0309.71
4.4.00.0030.0409.71
4.3.110.0070.0239.71
4.3.100.0070.0179.71
4.3.90.0070.0239.71
4.3.80.0000.0379.71
4.3.70.0000.0339.71
4.3.60.0070.0279.71
4.3.50.0030.0209.71
4.3.40.0000.0479.71
4.3.30.0000.0309.71
4.3.20.0000.0339.71
4.3.10.0000.0309.71
4.3.00.0030.0277.26

preferences:
39.21 ms | 400 KiB | 5 Q