3v4l.org

run code in 300+ PHP versions simultaneously
<?php $null1 = null; var_dump($null1--); $null2 = null; var_dump($null2 - 1); $null3 = null; var_dump(--$null3);

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)
8.3.70.0120.00616.88
8.3.60.0040.01516.75
8.3.50.0140.00017.96
8.3.40.0090.01220.71
8.3.30.0110.00418.50
8.3.20.0070.00024.18
8.3.10.0000.00824.66
8.3.00.0080.00026.16
8.2.190.0110.00716.58
8.2.180.0120.00325.92
8.2.170.0040.01119.02
8.2.160.0130.00022.96
8.2.150.0000.00725.66
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0030.00626.16
8.2.110.0100.00021.06
8.2.100.0040.00717.84
8.2.90.0000.00819.23
8.2.80.0050.00317.97
8.2.70.0000.00817.63
8.2.60.0000.00717.90
8.2.50.0060.00318.07
8.2.40.0080.00019.75
8.2.30.0000.00818.10
8.2.20.0000.00717.91
8.2.10.0000.00820.96
8.2.00.0070.00019.18
8.1.280.0110.00425.92
8.1.270.0080.00023.99
8.1.260.0000.00726.35
8.1.250.0060.00328.09
8.1.240.0090.00019.16
8.1.230.0070.00417.83
8.1.220.0080.00017.74
8.1.210.0060.00318.77
8.1.200.0090.00017.23
8.1.190.0100.00017.22
8.1.180.0050.00318.10
8.1.170.0040.00418.46
8.1.160.0000.00718.74
8.1.150.0000.00718.47
8.1.140.0070.00018.86
8.1.130.0030.00618.86
8.1.120.0000.00717.35
8.1.110.0040.00417.28
8.1.100.0040.00417.38
8.1.90.0000.00717.35
8.1.80.0000.00717.34
8.1.70.0030.00317.20
8.1.60.0000.00817.55
8.1.50.0090.00017.44
8.1.40.0100.00317.46
8.1.30.0050.00317.50
8.1.20.0000.00917.54
8.1.10.0030.00617.34
8.1.00.0000.00817.38
8.0.300.0070.00418.77
8.0.290.0050.00316.63
8.0.280.0040.00418.42
8.0.270.0000.00717.90
8.0.260.0060.00018.43
8.0.250.0040.00416.86
8.0.240.0070.00016.93
8.0.230.0030.00316.89
8.0.220.0030.00316.92
8.0.210.0070.00016.85
8.0.200.0000.00716.86
8.0.190.0000.00716.82
8.0.180.0030.00616.92
8.0.170.0080.00016.91
8.0.160.0000.00816.79
8.0.150.0000.00716.88
8.0.140.0040.00316.89
8.0.130.0030.00313.29
8.0.120.0000.00816.90
8.0.110.0000.00816.77
8.0.100.0000.00816.92
8.0.90.0000.00816.76
8.0.80.0050.00316.92
8.0.70.0000.00816.70
8.0.60.0040.00416.91
8.0.50.0050.00316.71
8.0.30.0040.00416.76
8.0.20.0040.00416.91
8.0.10.0070.00017.02
8.0.00.0000.00817.01
7.4.330.0060.00015.55
7.4.320.0030.00316.53
7.4.300.0000.00616.52
7.4.290.0030.00516.27
7.4.280.0040.00416.42
7.4.270.0030.00616.41
7.4.260.0030.00513.31
7.4.250.0000.00716.32
7.4.240.0000.00816.53
7.4.230.0040.00416.57
7.4.220.0000.00716.53
7.4.210.0000.00916.60
7.4.200.0050.00316.30
7.4.190.0040.00416.33
7.4.180.0000.00716.59
7.4.160.0040.00416.39
7.4.150.0000.00716.55
7.4.140.0030.00316.13
7.4.130.0050.00216.21
7.4.120.0050.00316.21
7.4.110.0040.00416.33
7.4.100.0000.00716.53
7.4.90.0000.00716.39
7.4.80.0070.00016.30
7.4.70.0030.00316.12
7.4.60.0040.00416.43
7.4.50.0000.00816.02
7.4.40.0000.00716.36
7.4.30.0040.00416.41
7.4.20.0070.00016.46
7.4.10.0030.00316.08
7.4.00.0040.00416.48
7.3.330.0050.00516.39
7.3.320.0030.00313.10
7.3.310.0000.00716.31
7.3.300.0000.00616.27
7.3.290.0040.00416.27
7.3.280.0000.00916.27
7.3.270.0070.00016.20
7.3.260.0000.00816.19
7.3.250.0070.00016.20
7.3.240.0060.00016.28
7.3.230.0080.00016.29
7.3.220.0050.00316.18
7.3.210.0050.00216.23
7.3.200.0000.00816.14
7.3.190.0000.00716.21
7.3.180.0070.00016.20
7.3.170.0030.00616.03
7.3.160.0030.00316.19
7.3.150.0090.00016.02
7.3.140.0080.00016.21
7.3.130.0080.00016.20
7.3.120.0000.00716.04
7.3.110.0070.00016.17
7.3.100.0000.00616.14
7.3.90.0050.00216.40
7.3.80.0000.00716.23
7.3.70.0030.00316.21
7.3.60.0050.00216.36
7.3.50.0000.00816.40
7.3.40.0000.00716.27
7.3.30.0040.00416.36
7.3.20.0040.00416.36
7.3.10.0040.00416.28
7.3.00.0040.00416.32

preferences:
48.57 ms | 401 KiB | 5 Q