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)
8.3.60.0180.00418.31
8.3.50.0090.01022.11
8.3.40.0070.00718.71
8.3.30.0070.00718.51
8.3.20.0040.00420.21
8.3.10.0040.00423.66
8.3.00.0000.00819.00
8.2.180.0150.00618.04
8.2.170.0100.00722.96
8.2.160.0130.00020.52
8.2.150.0030.00524.18
8.2.140.0060.00324.66
8.2.130.0060.00319.24
8.2.120.0070.00026.35
8.2.110.0050.00520.12
8.2.100.0120.00017.80
8.2.90.0000.00819.23
8.2.80.0080.00017.97
8.2.70.0030.00617.63
8.2.60.0050.00518.04
8.2.50.0030.00618.07
8.2.40.0060.00319.30
8.2.30.0000.00820.54
8.2.20.0050.00517.63
8.2.10.0030.00518.06
8.2.00.0040.00418.21
8.1.280.0070.00725.92
8.1.270.0060.00323.77
8.1.260.0070.00028.09
8.1.250.0040.00428.09
8.1.240.0100.00622.10
8.1.230.0060.00617.66
8.1.220.0040.00417.76
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0040.00417.23
8.1.180.0020.00518.10
8.1.170.0000.00918.59
8.1.160.0000.00722.09
8.1.150.0000.00818.87
8.1.140.0040.00419.57
8.1.130.0000.00817.69
8.1.120.0000.00717.36
8.1.110.0000.00717.34
8.1.100.0000.00717.46
8.1.90.0000.00717.51
8.1.80.0000.00817.46
8.1.70.0000.00717.45
8.1.60.0080.00017.46
8.1.50.0040.00417.52
8.1.40.0050.00317.53
8.1.30.0050.00317.70
8.1.20.0050.00317.63
8.1.10.0000.00717.49
8.1.00.0040.00417.39
8.0.300.0000.00718.77
8.0.290.0000.00816.75
8.0.280.0000.00718.45
8.0.270.0040.00417.29
8.0.260.0000.00617.24
8.0.250.0030.00316.86
8.0.240.0070.00016.88
8.0.230.0030.00616.83
8.0.220.0000.00716.85
8.0.210.0000.00816.82
8.0.200.0030.00316.90
8.0.190.0070.00016.93
8.0.180.0050.00316.83
8.0.170.0030.00616.92
8.0.160.0020.00516.87
8.0.150.0070.00016.78
8.0.140.0000.00816.81
8.0.130.0000.00813.32
8.0.120.0000.00816.87
8.0.110.0040.00416.95
8.0.100.0040.00416.69
8.0.90.0050.00216.92
8.0.80.0060.01016.93
8.0.70.0070.00016.92
8.0.60.0000.00716.83
8.0.50.0040.00416.92
8.0.30.0080.00916.98
8.0.20.0090.01117.40
8.0.10.0080.00017.00
8.0.00.0050.01116.87
7.4.330.0050.00016.84
7.4.320.0030.00316.61
7.4.300.0060.00016.54
7.4.290.0040.00416.52
7.4.280.0000.00816.38
7.4.270.0000.00716.50
7.4.260.0000.00816.55
7.4.250.0000.00716.42
7.4.240.0020.00516.56
7.4.230.0070.00016.65
7.4.220.0070.01416.51
7.4.210.0070.00716.57
7.4.200.0020.00416.38
7.4.160.0100.00516.28
7.4.150.0110.00717.40
7.4.140.0130.00517.86
7.4.130.0080.01016.43
7.4.120.0150.00316.46
7.4.110.0040.01416.33
7.4.100.0120.00616.43
7.4.90.0100.01316.41
7.4.80.0160.00719.39
7.4.70.0070.01516.44
7.4.60.0030.01316.33
7.4.50.0120.00316.18
7.4.40.0160.00016.65
7.4.30.0070.01116.34
7.4.00.0090.00615.00
7.3.330.0030.00313.21
7.3.320.0040.00313.12
7.3.310.0070.00016.25
7.3.300.0000.00716.06
7.3.290.0090.00916.33
7.3.280.0100.00916.38
7.3.270.0140.00317.40
7.3.260.0090.00916.37
7.3.250.0120.00616.43
7.3.240.0120.00616.35
7.3.230.0060.01016.39
7.3.210.0040.01216.49
7.3.200.0050.01116.42
7.3.190.0040.01216.36
7.3.180.0130.00616.36
7.3.170.0120.00816.41
7.3.160.0060.01116.36
7.3.10.0060.00816.23
7.3.00.0040.00716.24
7.2.330.0090.00916.49
7.2.320.0070.01316.34
7.2.310.0110.00516.39
7.2.300.0070.01116.57
7.2.290.0170.00616.75
7.2.130.0060.00616.64
7.2.120.0060.00916.88
7.2.110.0100.00716.98
7.2.100.0060.00917.05
7.2.90.0090.00616.91
7.2.80.0040.01116.92
7.2.70.0150.00616.90
7.2.60.0070.00516.83
7.2.50.0060.01017.04
7.2.40.0110.00717.07
7.2.30.0060.00616.98
7.2.20.0120.00316.89
7.2.10.0120.00316.99
7.2.00.0050.00917.99
7.1.250.0100.00415.64
7.1.200.0030.00615.64
7.1.100.0040.00717.73
7.1.70.0070.00016.92
7.1.60.0070.00419.48
7.1.50.0060.01217.02
7.1.00.0030.07722.35
7.0.200.0410.00314.53
7.0.60.0170.04319.86
7.0.50.0100.03717.75
7.0.40.0130.08720.06
7.0.30.0230.04320.35
7.0.20.0470.06720.17
7.0.10.0100.08720.30
7.0.00.0000.09320.30
5.6.280.0070.05720.91
5.6.210.0100.08020.48
5.6.200.0100.03318.19
5.6.190.0100.08020.29
5.6.180.0330.07720.61
5.6.170.0270.04320.54
5.6.160.0100.08320.48
5.6.150.0100.05018.13
5.6.140.0030.08018.11
5.6.130.0070.07018.15
5.6.120.0130.07321.09
5.6.110.0130.07721.06
5.6.100.0070.05020.98
5.6.90.0130.08020.96
5.6.80.0100.06720.37
5.5.350.4270.04720.34
5.5.340.0070.04017.98
5.5.330.0000.05320.21
5.5.320.0100.07720.20
5.5.310.0230.04020.14
5.5.300.0130.06318.00
5.5.290.0070.08017.98
5.5.280.0000.09320.64
5.5.270.0030.06020.86
5.5.260.0000.05020.96
5.5.250.0170.07320.50
5.5.240.0270.07720.26

preferences:
50.78 ms | 401 KiB | 5 Q