3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = [1, 2, 3]; foreach($b as &$v){ $v = $v*2; unset($v); } var_dump($b);

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)
8.3.60.0100.01016.63
8.3.50.0110.00721.98
8.3.40.0110.00418.72
8.3.30.0150.00318.54
8.3.20.0000.00720.21
8.3.10.0080.00023.64
8.3.00.0040.00419.26
8.2.180.0070.01118.17
8.2.170.0040.01122.96
8.2.160.0170.00320.43
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00019.49
8.2.120.0040.00426.35
8.2.110.0070.00320.39
8.2.100.0080.00317.80
8.2.90.0050.00219.10
8.2.80.0080.00017.97
8.2.70.0120.00017.61
8.2.60.0030.00517.68
8.2.50.0040.00418.07
8.2.40.0040.00419.34
8.2.30.0000.00720.62
8.2.20.0080.00017.73
8.2.10.0000.00718.16
8.2.00.0040.00418.10
8.1.280.0120.00325.92
8.1.270.0050.00323.92
8.1.260.0040.00428.09
8.1.250.0000.00728.09
8.1.240.0090.00022.48
8.1.230.0110.00517.66
8.1.220.0030.00617.77
8.1.210.0000.00918.77
8.1.200.0090.00017.48
8.1.190.0030.00617.35
8.1.180.0080.00018.10
8.1.170.0000.00918.50
8.1.160.0040.00421.91
8.1.150.0040.00418.95
8.1.140.0080.00019.60
8.1.130.0080.00017.73
8.1.120.0000.00717.43
8.1.110.0040.00417.43
8.1.100.0000.00817.45
8.1.90.0080.00017.34
8.1.80.0040.00417.44
8.1.70.0030.00317.48
8.1.60.0000.00917.45
8.1.50.0090.00017.45
8.1.40.0030.00617.56
8.1.30.0040.00417.63
8.1.20.0070.00017.45
8.1.10.0050.00317.45
8.1.00.0040.00417.44
8.0.300.0030.00618.77
8.0.290.0070.00016.63
8.0.280.0000.00718.42
8.0.270.0000.00717.23
8.0.260.0080.00017.29
8.0.250.0030.00316.84
8.0.240.0060.00016.86
8.0.230.0000.00716.82
8.0.220.0030.00316.76
8.0.210.0030.00516.86
8.0.200.0030.00316.94
8.0.190.0000.00716.93
8.0.180.0000.00716.80
8.0.170.0050.00316.93
8.0.160.0000.00716.92
8.0.150.0000.00716.75
8.0.140.0000.00716.83
8.0.130.0030.00313.29
8.0.120.0030.00516.87
8.0.110.0000.00716.79
8.0.100.0000.00716.99
8.0.90.0000.00716.89
8.0.80.0070.00716.95
8.0.70.0030.00516.83
8.0.60.0040.00416.95
8.0.50.0070.00016.75
8.0.30.0050.01317.17
8.0.20.0160.00317.40
8.0.10.0000.00816.89
8.0.00.0090.00816.78
7.4.330.0020.00216.76
7.4.320.0030.00316.64
7.4.300.0000.00616.56
7.4.290.0030.00316.39
7.4.280.0040.00416.43
7.4.270.0000.00816.60
7.4.260.0030.00316.44
7.4.250.0000.00716.47
7.4.240.0040.00316.52
7.4.230.0050.00216.57
7.4.220.0070.01116.54
7.4.210.0060.01016.55
7.4.200.0040.00416.68
7.4.160.0030.01416.66
7.4.150.0080.01017.40
7.4.140.0080.01717.86
7.4.130.0100.01016.48
7.4.120.0050.01216.60
7.4.110.0110.00816.32
7.4.100.0100.00616.49
7.4.90.0060.01216.48
7.4.80.0130.00919.39
7.4.70.0070.01016.56
7.4.60.0060.00916.33
7.4.50.0060.00916.27
7.4.40.0060.01016.26
7.4.30.0070.01016.40
7.4.00.0070.01014.98
7.3.330.0030.00313.09
7.3.320.0050.00012.93
7.3.310.0040.00416.39
7.3.300.0030.00316.16
7.3.290.0070.00016.30
7.3.280.0080.00816.26
7.3.270.0110.00617.40
7.3.260.0100.00716.20
7.3.250.0110.00716.32
7.3.240.0050.01216.38
7.3.230.0060.01216.39
7.3.210.0120.00616.28
7.3.200.0060.00916.31
7.3.190.0030.01716.54
7.3.180.0080.00816.55
7.3.170.0150.00816.27
7.3.160.0060.00916.27
7.2.330.0070.01016.65
7.2.320.0190.00316.37
7.2.310.0130.00716.57
7.2.300.0140.00416.68
7.2.290.0040.01516.68
7.2.00.0030.01019.30
7.1.100.0060.00618.28
7.1.70.0030.00617.21
7.1.60.0100.01319.48
7.1.50.0070.01117.02
7.1.00.0030.07722.29
7.0.200.0340.00314.37
7.0.60.0070.07019.91
7.0.50.0070.05717.79
7.0.40.0100.08320.24
7.0.30.0230.08320.20
7.0.20.0400.05720.17
7.0.10.0100.08720.05
7.0.00.0100.06720.17
5.6.280.0030.04020.90
5.6.210.0100.08020.47
5.6.200.0130.07018.17
5.6.190.0030.05020.27
5.6.180.0300.05720.39
5.6.170.0200.03720.48
5.6.160.0100.04020.48
5.6.150.0070.07318.11
5.6.140.0100.04318.07
5.6.130.0030.08318.21
5.6.120.0030.05320.89
5.6.110.0070.09021.08
5.6.100.0070.03721.13
5.6.90.0130.07020.87
5.6.80.0000.04020.37
5.5.350.0100.07020.51
5.5.340.0130.07318.02
5.5.330.0070.04020.36
5.5.320.0170.07720.19
5.5.310.0230.04020.41
5.5.300.0030.08718.01
5.5.290.0070.06717.91
5.5.280.0070.04020.61
5.5.270.0070.08020.72
5.5.260.0000.04320.86
5.5.250.0130.07320.54
5.5.240.0230.07320.27

preferences:
51.71 ms | 401 KiB | 5 Q