3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public ?int $var; } $a = new A(); $b = new A(); $b->var = null; var_dump(isset($a->var)); var_dump(isset($b->var));

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)
8.4.120.0100.01022.29
8.4.110.0060.00322.80
8.4.100.0180.00417.89
8.4.90.0110.01018.39
8.4.80.0150.00417.57
8.4.70.0120.00917.73
8.4.60.0100.01119.04
8.4.50.0090.01219.75
8.4.40.0100.01017.93
8.4.30.0130.00718.74
8.4.20.0130.00717.85
8.4.10.0060.00319.48
8.3.250.0110.00418.77
8.3.240.0140.00516.58
8.3.230.0110.00616.40
8.3.220.0040.00617.00
8.3.210.0110.00416.58
8.3.200.0040.00516.62
8.3.190.0100.00817.32
8.3.180.0090.00916.59
8.3.170.0130.00617.02
8.3.160.0160.00318.25
8.3.150.0070.01120.83
8.3.140.0120.00318.28
8.3.130.0080.00016.55
8.3.120.0050.00318.87
8.3.110.0030.00620.94
8.3.100.0060.00324.06
8.3.90.0140.00326.77
8.3.80.0090.00019.36
8.3.70.0110.00718.30
8.3.60.0160.00618.55
8.3.50.0100.00724.51
8.3.40.0100.01018.69
8.3.30.0030.01018.84
8.3.20.0080.00024.18
8.3.10.0000.00724.66
8.3.00.0040.00426.16
8.2.290.0130.00620.59
8.2.280.0070.00918.66
8.2.270.0040.00417.33
8.2.260.0180.00020.17
8.2.250.0120.00618.31
8.2.240.0080.00816.97
8.2.230.0040.00422.58
8.2.220.0040.01237.54
8.2.210.0100.00326.77
8.2.200.0030.00618.88
8.2.190.0150.00916.75
8.2.180.0090.00925.92
8.2.170.0120.00318.77
8.2.160.0100.00722.96
8.2.150.0040.00425.66
8.2.140.0070.00024.66
8.2.130.0050.00226.16
8.2.120.0040.00426.35
8.2.110.0100.00020.93
8.2.100.0000.01117.72
8.2.90.0080.00017.84
8.2.80.0080.00018.22
8.2.70.0000.00817.50
8.2.60.0060.00317.50
8.2.50.0080.00018.05
8.2.40.0040.00418.03
8.2.30.0020.00518.06
8.2.20.0060.00317.90
8.2.10.0080.00019.18
8.2.00.0070.00019.10
8.1.330.0080.00921.78
8.1.320.0100.00916.24
8.1.310.0090.00616.70
8.1.300.0150.00318.42
8.1.290.0060.00330.84
8.1.280.0110.00425.92
8.1.270.0080.00023.99
8.1.260.0000.00828.09
8.1.250.0040.00428.09
8.1.240.0040.00722.01
8.1.230.0080.00320.84
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0030.00617.35
8.1.190.0050.00317.22
8.1.180.0080.00018.10
8.1.170.0060.00318.71
8.1.160.0050.00218.79
8.1.150.0000.00718.83
8.1.140.0040.00418.82
8.1.130.0070.00019.97
8.1.120.0040.00417.41
8.1.110.0050.00317.42
8.1.100.0000.00817.29
8.1.90.0040.00417.36
8.1.80.0000.00717.42
8.1.70.0050.00317.40
8.1.60.0030.00517.42
8.1.50.0000.00717.36
8.1.40.0040.00417.46
8.1.30.0000.00717.61
8.1.20.0040.00417.42
8.1.10.0000.00717.59
8.1.00.0000.00817.35
8.0.300.0040.00419.81
8.0.290.0000.00816.58
8.0.280.0000.00718.34
8.0.270.0040.00417.82
8.0.260.0070.00018.26
8.0.250.0000.00716.84
8.0.240.0040.00416.92
8.0.230.0070.00016.93
8.0.220.0000.00716.81
8.0.210.0030.00316.70
8.0.200.0070.00016.89
8.0.190.0050.00216.86
8.0.180.0070.00016.73
8.0.170.0030.00616.79
8.0.160.0040.00416.86
8.0.150.0000.00816.78
8.0.140.0000.00716.80
8.0.130.0000.00713.32
8.0.120.0000.00716.81
8.0.110.0000.00716.95
8.0.100.0000.00816.79
8.0.90.0000.00716.78
8.0.80.0050.01116.75
8.0.70.0040.00416.87
8.0.60.0000.00816.79
8.0.50.0040.00416.70
8.0.30.0030.01416.84
8.0.20.0080.01317.00
8.0.10.0000.00716.89
8.0.00.0000.01816.68
7.4.330.0000.00415.55
7.4.320.0070.00016.55
7.4.300.0000.00716.58
7.4.290.0040.00416.43
7.4.280.0000.00816.52
7.4.270.0000.00616.45
7.4.260.0050.00013.11
7.4.250.0040.00416.42
7.4.240.0000.00716.37
7.4.230.0030.00316.36
7.4.220.0020.00516.46
7.4.210.0070.00716.55
7.4.200.0000.00716.65
7.4.130.0080.00916.34
7.4.120.0070.01116.44
7.4.110.0100.00716.45
7.4.100.0140.00716.45
7.4.90.0080.00816.48
7.4.80.0120.01219.39
7.4.70.0060.01416.23
7.4.60.0120.01116.37
7.4.50.0170.01016.48
7.4.40.0260.00316.31
7.4.30.0160.01216.34
7.4.20.0150.01116.32
7.4.10.0180.01116.33
7.4.00.0150.00516.31
7.3.330.0070.00016.37
7.3.320.0000.00613.17
7.3.310.0060.00016.13
7.3.300.0000.00716.08
7.3.290.0040.01016.22
7.3.260.0160.00416.36
7.3.240.0100.01016.17
7.3.230.0130.00316.17
7.3.210.0130.01016.39
7.3.200.0120.00416.18
7.3.190.0100.01216.28
7.3.180.0180.00716.13
7.3.170.0180.01016.16
7.3.160.0130.00516.07
7.3.150.0160.00916.31
7.3.140.0140.01416.26
7.3.130.0170.00516.27
7.3.120.0090.01316.31
7.3.110.0140.00916.26
7.3.100.0090.01216.03
7.3.90.0150.00916.13
7.3.80.0130.01116.06
7.3.70.0170.01116.13
7.3.60.0190.00516.21
7.3.50.0190.01316.06
7.3.40.0200.00316.09
7.3.30.0100.01116.06
7.3.20.0160.00516.24
7.3.10.0150.00516.17
7.3.00.0090.00916.15
7.2.330.0120.00916.27
7.2.320.0090.00916.31
7.2.310.0110.01316.46
7.2.300.0140.01316.37
7.2.290.0190.00616.48
7.2.280.0110.01516.54
7.2.270.0190.00916.39
7.2.260.0110.01216.25
7.2.250.0110.01116.34
7.2.240.0140.00816.36
7.2.230.0150.00816.20
7.2.220.0100.01215.99
7.2.210.0100.01316.22
7.2.200.0180.00616.22
7.2.190.0140.00816.25
7.2.180.0160.01016.31
7.2.170.0150.00816.29
7.2.160.0110.01316.10
7.2.150.0130.01216.21
7.2.140.0140.00516.23
7.2.130.0090.01116.33
7.2.120.0120.00816.32
7.2.110.0180.00816.26
7.2.100.0100.00916.40
7.2.90.0120.00816.33
7.2.80.0100.01016.31
7.2.70.0110.01116.37
7.2.60.0220.00916.35
7.2.50.0090.01116.39
7.2.40.0090.00916.36
7.2.30.0130.01216.34
7.2.20.0110.00916.29
7.2.10.0110.01016.45
7.2.00.0100.01016.33

preferences:
28.82 ms | 403 KiB | 5 Q