3v4l.org

run code in 300+ PHP versions simultaneously
<?php // the unroll: $arr = array(1 => 'one', 2 => 'two', 3 => 'three'); $a = &$arr[1]; // first iteration var_dump($a,$arr); $a = &$arr[2]; var_dump($a,$arr);

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)
8.3.60.0070.01016.50
8.3.50.0140.00521.94
8.3.40.0150.00018.54
8.3.30.0040.01118.96
8.3.20.0070.00020.21
8.3.10.0000.00923.66
8.3.00.0080.00020.94
8.2.180.0160.00016.50
8.2.170.0070.01322.96
8.2.160.0070.00720.43
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.01826.16
8.2.120.0000.00819.24
8.2.110.0000.01022.29
8.2.100.0080.00417.91
8.2.90.0040.00419.05
8.2.80.0060.00317.97
8.2.70.0030.00717.63
8.2.60.0070.00317.80
8.2.50.0130.00018.07
8.2.40.0080.00019.84
8.2.30.0040.00418.20
8.2.20.0040.00417.55
8.2.10.0000.00718.10
8.2.00.0040.00417.66
8.1.280.0070.01125.92
8.1.270.0080.00023.96
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0050.00523.84
8.1.230.0080.00318.93
8.1.220.0080.00017.74
8.1.210.0030.00518.77
8.1.200.0070.00317.23
8.1.190.0030.00617.10
8.1.180.0050.00318.10
8.1.170.0050.00318.46
8.1.160.0030.00621.88
8.1.150.0000.00718.47
8.1.140.0020.00517.42
8.1.130.0070.00017.82
8.1.120.0030.00617.46
8.1.110.0030.00617.23
8.1.100.0000.00717.37
8.1.90.0080.00017.40
8.1.80.0000.00717.37
8.1.70.0000.00717.26
8.1.60.0030.00617.41
8.1.50.0090.00017.48
8.1.40.0000.00717.41
8.1.30.0030.00517.58
8.1.20.0070.00017.42
8.1.10.0000.00817.48
8.1.00.0000.00717.40
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0070.00018.43
8.0.270.0000.00717.13
8.0.260.0060.00017.18
8.0.250.0000.00716.91
8.0.240.0040.00716.88
8.0.230.0000.00716.93
8.0.220.0030.00316.72
8.0.210.0030.00316.82
8.0.200.0030.00316.89
8.0.190.0040.00416.94
8.0.180.0030.00316.76
8.0.170.0000.00816.72
8.0.160.0000.00716.76
8.0.150.0030.00316.76
8.0.140.0000.00716.81
8.0.130.0030.00313.29
8.0.120.0000.00716.77
8.0.110.0030.00316.64
8.0.100.0000.00716.88
8.0.90.0030.00316.61
8.0.80.0040.01116.78
8.0.70.0000.00816.64
8.0.60.0000.00716.69
8.0.50.0000.00716.88
8.0.30.0150.00616.97
8.0.20.0180.00717.40
8.0.10.0070.00016.84
8.0.00.0090.00916.78
7.4.330.0050.00015.02
7.4.320.0000.00616.46
7.4.300.0030.00316.47
7.4.290.0070.00016.49
7.4.280.0080.00016.34
7.4.270.0070.00016.34
7.4.260.0040.00416.31
7.4.250.0020.00516.44
7.4.240.0040.00416.50
7.4.230.0060.00016.55
7.4.220.0130.01316.52
7.4.210.0090.01216.38
7.4.200.0070.00016.40
7.4.160.0070.01716.42
7.4.150.0110.00717.40
7.4.140.0060.01417.86
7.4.130.0110.00716.36
7.4.120.0120.00516.29
7.4.110.0100.01016.30
7.4.100.0100.00716.52
7.4.90.0070.01416.23
7.4.80.0100.01319.39
7.4.70.0120.00416.25
7.4.60.0100.01316.43
7.4.50.0000.00516.23
7.4.40.0060.01016.17
7.4.30.0130.00416.58
7.4.00.0090.00614.80
7.3.330.0000.00613.03
7.3.320.0070.00013.13
7.3.310.0000.00616.02
7.3.300.0060.00016.18
7.3.290.0090.00616.23
7.3.280.0110.00716.25
7.3.270.0130.00817.40
7.3.260.0170.00716.31
7.3.250.0030.01416.36
7.3.240.0160.00616.55
7.3.230.0040.01216.39
7.3.210.0060.01316.31
7.3.200.0140.00419.39
7.3.190.0130.00316.32
7.3.180.0160.00616.20
7.3.170.0030.01816.42
7.3.160.0060.00916.30
7.3.120.0070.01014.56
7.2.330.0110.00716.60
7.2.320.0070.01716.19
7.2.310.0000.01616.62
7.2.300.0000.01716.59
7.2.290.0130.01016.34
7.2.60.0030.01316.83
7.2.00.0050.00519.46
7.1.200.0000.01115.64
7.1.100.0000.01217.75
7.1.70.0070.01016.74
7.1.60.0110.01419.70
7.1.50.0140.01116.57
7.1.00.0070.07322.34
7.0.200.0030.00316.72
7.0.140.0100.06722.07
7.0.100.0100.04320.16
7.0.90.0070.04019.89
7.0.80.0070.04020.02
7.0.70.0030.04320.00
7.0.60.0000.03719.96
7.0.50.0030.04020.16
7.0.40.0030.03720.18
7.0.30.0030.03720.11
7.0.20.0030.04020.09
7.0.10.0130.03020.18
7.0.00.0070.03320.14
5.6.280.0100.06720.77
5.6.250.0000.04020.68
5.6.240.0030.04320.50
5.6.230.0100.03720.74
5.6.220.0030.03720.46
5.6.210.0030.05320.68
5.6.200.0030.03720.91
5.6.190.0030.03721.07
5.6.180.0070.03321.13
5.6.170.0070.03320.94
5.6.160.0070.03321.07
5.6.150.0070.03721.04
5.6.140.0000.03721.12
5.6.130.0030.03721.02
5.6.120.0000.04021.02
5.6.110.0070.04021.02
5.6.100.0030.04320.86
5.6.90.0100.05720.99
5.6.80.0100.07320.55
5.6.70.0130.07720.45
5.6.60.0200.07020.43
5.6.50.0070.07320.42
5.6.40.0130.08020.36
5.6.30.0100.07320.37
5.6.20.0070.06320.36
5.6.10.0100.07020.38
5.6.00.0030.06720.35
5.5.380.0070.03320.52
5.5.370.0070.04020.43
5.5.360.0070.03320.33
5.5.350.0030.04320.41
5.5.340.0000.03720.63
5.5.330.0030.04020.82
5.5.320.0000.04020.79
5.5.310.0070.03020.60
5.5.300.0070.03020.86
5.5.290.0000.04720.88
5.5.280.0030.03320.88
5.5.270.0000.03720.87
5.5.260.0100.03020.86
5.5.250.0070.06320.70
5.5.240.0030.08320.29
5.5.230.0100.08020.25
5.5.220.0030.04720.14
5.5.210.0070.05320.21
5.5.200.0070.08020.14
5.5.190.0100.08020.26
5.5.180.0170.07719.95
5.5.160.0200.05720.10
5.5.150.0070.08320.14
5.5.140.0070.08320.16
5.5.130.0170.07720.11
5.5.120.0030.05019.98
5.5.110.0130.07320.13
5.5.100.0070.05020.04
5.5.90.0100.07720.16
5.5.80.0070.08020.01
5.5.70.0070.08320.05
5.5.60.0030.07720.13
5.5.50.0200.03320.14
5.5.40.0030.04320.02
5.5.30.0130.07320.07
5.5.20.0070.07720.12
5.5.10.0100.07319.93
5.5.00.0000.07320.05
5.4.450.0030.04019.39
5.4.440.0030.04019.36
5.4.430.0070.03019.56
5.4.420.0000.04319.30
5.4.410.0130.06719.00
5.4.400.0070.07718.89
5.4.390.0030.08018.81
5.4.380.0170.06719.02
5.4.370.0070.08019.06
5.4.360.0100.04319.04
5.4.350.0100.05319.23
5.4.340.0030.07719.05
5.4.320.0100.07019.03
5.4.310.0070.09719.10
5.4.300.0070.06019.05
5.4.290.0100.06319.02
5.4.280.0170.07319.12
5.4.270.0070.06318.98
5.4.260.0170.07018.94
5.4.250.0070.07319.04
5.4.240.0070.05019.03
5.4.230.0170.06719.12
5.4.220.0030.08018.97
5.4.210.0030.08018.89
5.4.200.0070.07318.78
5.4.190.0130.07018.89
5.4.180.0130.06719.02
5.4.170.0130.05719.08
5.4.160.0130.03719.00
5.4.150.0070.04319.04
5.4.140.0170.06316.37
5.4.130.0100.06716.37
5.4.120.0030.06716.09
5.4.110.0030.05716.30
5.4.100.0130.06316.32
5.4.90.0100.06016.31
5.4.80.0030.06316.20
5.4.70.0030.04316.39
5.4.60.0000.04016.32
5.4.50.0070.07316.23
5.4.40.0070.06316.23
5.4.30.0070.05016.39
5.4.20.0130.06016.43
5.4.10.0100.07716.41
5.4.00.0070.07315.74
5.3.290.0100.07015.74
5.3.280.0070.07715.74
5.3.270.0070.08015.74
5.3.260.0130.06715.74
5.3.250.0000.07315.74
5.3.240.0000.08015.74
5.3.230.0100.08015.74
5.3.220.0070.06015.74
5.3.210.0070.08015.74
5.3.200.0030.08715.74
5.3.190.0070.07715.74
5.3.180.0100.07315.74
5.3.170.0100.03315.74
5.3.160.0000.09015.74
5.3.150.0000.06715.74
5.3.140.0000.07315.74
5.3.130.0070.07715.74
5.3.120.0200.08015.74
5.3.110.0070.08015.74
5.3.100.0070.04315.74
5.3.90.0030.07315.74
5.3.80.0100.04015.74
5.3.70.0070.07715.74
5.3.60.0100.07315.74
5.3.50.0070.08015.74
5.3.40.0030.08015.74
5.3.30.0070.07315.74
5.3.20.0030.07015.74
5.3.10.0000.05015.74
5.3.00.0070.08315.74
5.2.170.0070.06015.74
5.2.160.0030.05315.74
5.2.150.0100.04315.74
5.2.140.0070.05015.74
5.2.130.0100.05715.74
5.2.120.0170.05015.74
5.2.110.0000.03315.74
5.2.100.0070.05715.74
5.2.90.0000.06315.74
5.2.80.0070.03315.74
5.2.70.0100.04715.74
5.2.60.0070.06015.74
5.2.50.0070.05715.74
5.2.40.0000.06315.74
5.2.30.0070.03315.74
5.2.20.0030.07015.74
5.2.10.0070.04015.74
5.2.00.0070.03715.74
5.1.60.0030.04715.74
5.1.50.0070.03715.74
5.1.40.0000.04715.74
5.1.30.0070.06015.74
5.1.20.0070.05315.74
5.1.10.0030.04715.74
5.1.00.0070.05015.74
5.0.50.0000.03715.74
5.0.40.0000.05015.74
5.0.30.0070.04315.74
5.0.20.0070.01715.74
5.0.10.0030.04315.74
5.0.00.0030.06315.74
4.4.90.0000.02315.74
4.4.80.0030.03315.74
4.4.70.0030.02315.74
4.4.60.0000.04015.74
4.4.50.0000.03315.74
4.4.40.0030.03315.74
4.4.30.0030.03315.74
4.4.20.0000.02715.74
4.4.10.0030.03315.74
4.4.00.0000.05015.74
4.3.110.0000.03715.74
4.3.100.0030.03015.74
4.3.90.0070.02715.74
4.3.80.0100.02015.74
4.3.70.0000.04015.74
4.3.60.0000.02015.74
4.3.50.0100.01715.74
4.3.40.0030.04315.74
4.3.30.0030.03315.74
4.3.20.0000.02315.74
4.3.10.0000.03715.74
4.3.00.0000.03715.74

preferences:
36.81 ms | 401 KiB | 5 Q