3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = &$a; $c = 3; $d = &$c; $d = $b; echo "$a $b $c $d";

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)
8.3.60.0070.00718.15
8.3.50.0080.01321.88
8.3.40.0110.01118.67
8.3.30.0090.00918.97
8.3.20.0070.00020.13
8.3.10.0040.00423.65
8.3.00.0030.00520.88
8.2.180.0040.01116.50
8.2.170.0070.00722.96
8.2.160.0100.00718.79
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0100.00326.16
8.2.120.0080.00020.92
8.2.110.0030.00622.08
8.2.100.0120.00019.51
8.2.90.0040.00418.99
8.2.80.0080.00017.97
8.2.70.0050.00517.63
8.2.60.0100.00018.03
8.2.50.0050.00318.07
8.2.40.0080.00021.18
8.2.30.0060.00318.09
8.2.20.0050.00317.75
8.2.10.0070.00017.98
8.2.00.0040.00417.71
8.1.280.0100.00725.92
8.1.270.0040.00423.87
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0030.00622.13
8.1.230.0040.00719.16
8.1.220.0050.00217.74
8.1.210.0050.00318.77
8.1.200.0000.00917.35
8.1.190.0060.00317.23
8.1.180.0050.00318.10
8.1.170.0000.00818.48
8.1.160.0000.00722.04
8.1.150.0000.00818.52
8.1.140.0040.00417.28
8.1.130.0030.00317.81
8.1.120.0050.00217.35
8.1.110.0030.00317.33
8.1.100.0030.00717.34
8.1.90.0000.00717.44
8.1.80.0070.00017.30
8.1.70.0030.00317.38
8.1.60.0040.00417.50
8.1.50.0040.00417.35
8.1.40.0070.00017.48
8.1.30.0040.00417.57
8.1.20.0000.00717.63
8.1.10.0000.00717.39
8.1.00.0000.00717.43
8.0.300.0080.00018.77
8.0.290.0030.00317.16
8.0.280.0030.00318.43
8.0.270.0000.00717.21
8.0.260.0030.00317.24
8.0.250.0000.00716.95
8.0.240.0040.00416.98
8.0.230.0030.00316.96
8.0.220.0030.00316.84
8.0.210.0000.00816.90
8.0.200.0000.00716.85
8.0.190.0030.00317.00
8.0.180.0000.00716.93
8.0.170.0060.00316.91
8.0.160.0040.00416.75
8.0.150.0030.00316.81
8.0.140.0040.00416.84
8.0.130.0000.00613.35
8.0.120.0000.00816.89
8.0.110.0000.00816.92
8.0.100.0040.00416.67
8.0.90.0040.00416.80
8.0.80.0070.00816.82
8.0.70.0000.00716.87
8.0.60.0040.00416.75
8.0.50.0000.00716.90
8.0.30.0110.00817.10
8.0.20.0090.01017.40
8.0.10.0000.00716.82
8.0.00.0080.01116.75
7.4.330.0050.00015.13
7.4.320.0030.00316.42
7.4.300.0060.00016.51
7.4.290.0030.00616.44
7.4.280.0040.00716.56
7.4.270.0040.00416.42
7.4.260.0040.00416.38
7.4.250.0030.00316.48
7.4.240.0030.00416.48
7.4.230.0070.00016.30
7.4.220.0120.00616.62
7.4.210.0040.01116.54
7.4.200.0030.00316.51
7.4.160.0070.01016.51
7.4.150.0040.01517.40
7.4.140.0080.00917.86
7.4.130.0070.01016.39
7.4.120.0130.00916.38
7.4.110.0130.01016.68
7.4.100.0090.00916.40
7.4.90.0130.00316.50
7.4.80.0140.00319.39
7.4.70.0100.01016.36
7.4.60.0070.01016.25
7.4.50.0040.00416.25
7.4.40.0080.00816.25
7.4.30.0040.01116.43
7.4.00.0040.01214.77
7.3.330.0050.00013.09
7.3.320.0050.00013.08
7.3.310.0070.00016.21
7.3.300.0070.00016.29
7.3.290.0040.01416.26
7.3.280.0090.00916.28
7.3.270.0000.01817.40
7.3.260.0180.00316.42
7.3.250.0120.00816.33
7.3.240.0110.00616.29
7.3.230.0090.00916.50
7.3.210.0060.01216.36
7.3.200.0140.00719.39
7.3.190.0120.00916.40
7.3.180.0080.00716.57
7.3.170.0100.01016.38
7.3.160.0130.00316.33
7.3.120.0150.00014.70
7.2.330.0070.01016.52
7.2.320.0130.00316.49
7.2.310.0130.00316.48
7.2.300.0120.00616.48
7.2.290.0070.01016.57
7.2.80.0100.00316.50
7.2.00.0040.00719.38
7.1.200.0070.00715.66
7.1.100.0100.00318.32
7.1.70.0000.00716.97
7.1.60.0130.01319.70
7.1.50.0080.01216.82
7.1.00.0030.07722.46
7.0.200.0040.00416.68
7.0.140.0070.07022.21
7.0.60.0030.04319.92
7.0.50.0030.08317.85
7.0.40.0070.04020.25
7.0.30.0530.05720.06
7.0.20.0130.04320.17
7.0.10.0230.08720.16
7.0.00.0100.04020.12
5.6.280.0070.06720.77
5.6.210.0030.07020.43
5.6.200.0100.08018.22
5.6.190.0130.08320.41
5.6.180.0230.08320.38
5.6.170.0370.04320.61
5.6.160.0130.03320.51
5.6.150.0030.04318.13
5.6.140.0070.07718.16
5.6.130.0170.04018.14
5.6.120.0000.06020.96
5.6.110.0070.05720.99
5.6.100.0100.08020.88
5.6.90.0070.07320.97
5.6.80.0130.07320.50
5.6.70.0200.05320.39
5.5.350.0130.08320.34
5.5.340.0030.06018.02
5.5.330.0100.08320.07
5.5.320.0200.03720.16
5.5.310.0230.06320.13
5.5.300.0170.07017.87
5.5.290.0100.08018.00
5.5.280.0200.07020.86
5.5.270.0030.04720.78
5.5.260.0100.06320.78
5.5.250.0100.08020.58
5.5.240.0030.04720.06
5.4.450.0970.05319.55
5.4.440.0630.05719.52
5.4.430.0570.05719.13
5.4.420.0730.00019.49
5.4.410.0170.05018.68
5.4.400.0900.06318.75
5.4.390.0800.05318.72
5.4.380.0270.05018.71
5.4.370.0100.05018.74
5.4.360.0070.04018.62
5.4.350.0080.03411.97
5.4.340.0080.04311.97
5.4.320.0070.03612.45
5.4.310.0060.04212.45
5.4.300.0100.04812.45
5.4.290.0040.04112.45
5.4.280.0070.04712.34
5.4.270.0070.04112.35
5.4.260.0060.03712.34
5.4.250.0060.03712.35
5.4.240.0050.03612.35
5.4.230.0060.03812.34
5.4.220.0050.03612.34
5.4.210.0040.03812.34
5.4.200.0060.03912.34
5.4.190.0040.03812.33
5.4.180.0080.03712.34
5.4.170.0090.04012.34
5.4.160.0090.04512.34
5.4.150.0060.04212.34
5.4.140.0080.04012.02
5.4.130.0080.03612.01
5.4.120.0070.03911.97
5.4.110.0080.04011.96
5.4.100.0060.03911.96
5.4.90.0060.03711.96
5.4.80.0070.03611.97
5.4.70.0060.03511.96
5.4.60.0070.03511.96
5.4.50.0050.04211.96
5.4.40.0090.03111.95
5.4.30.0070.03511.95
5.4.20.0050.03711.95
5.4.10.0040.03711.94
5.4.00.0030.04211.44
5.3.290.0050.03912.80
5.3.280.0080.03612.71
5.3.270.0070.03812.72
5.3.260.0060.03912.72
5.3.250.0100.03512.72
5.3.240.0100.03812.72
5.3.230.0090.03612.71
5.3.220.0080.03612.68
5.3.210.0100.03412.68
5.3.200.0060.03512.68
5.3.190.0050.04012.68
5.3.180.0110.03012.67
5.3.170.0110.03212.67
5.3.160.0050.03712.67
5.3.150.0070.04312.68
5.3.140.0100.04712.66
5.3.130.0050.04412.66
5.3.120.0030.04612.66
5.3.110.0100.03812.66
5.3.100.0070.03712.11
5.3.90.0080.03512.09
5.3.80.0050.03712.08
5.3.70.0070.03512.07
5.3.60.0050.03812.06
5.3.50.0060.03712.00
5.3.40.0060.03712.00
5.3.30.0060.03511.94
5.3.20.0050.03711.72
5.3.10.0040.03811.69
5.3.00.0060.03711.67
5.2.170.0080.0289.18
5.2.160.0040.0309.18
5.2.150.0030.0329.18
5.2.140.0070.0289.17
5.2.130.0070.0279.14
5.2.120.0060.0279.13
5.2.110.0030.0319.14
5.2.100.0040.0339.14
5.2.90.0040.0309.14
5.2.80.0050.0309.13
5.2.70.0050.0309.13
5.2.60.0060.0299.08
5.2.50.0030.0329.05
5.2.40.0050.0289.03
5.2.30.0030.0309.01
5.2.20.0040.0289.00
5.2.10.0070.0248.93
5.2.00.0060.0278.79
5.1.60.0060.0228.08
5.1.50.0060.0228.07
5.1.40.0040.0248.05
5.1.30.0040.0268.40
5.1.20.0060.0248.43
5.1.10.0050.0268.15
5.1.00.0050.0248.15
5.0.50.0020.0216.63
5.0.40.0040.0196.49
5.0.30.0030.0366.30
5.0.20.0030.0196.27
5.0.10.0030.0206.25
5.0.00.0040.0306.24
4.4.90.0050.0144.78
4.4.80.0010.0164.76
4.4.70.0040.0144.75
4.4.60.0010.0174.75
4.4.50.0030.0154.77
4.4.40.0010.0284.71
4.4.30.0030.0154.76
4.4.20.0020.0164.85
4.4.10.0000.0194.85
4.4.00.0040.0274.76
4.3.110.0000.0184.67
4.3.100.0040.0144.67
4.3.90.0020.0144.64
4.3.80.0020.0254.59
4.3.70.0050.0124.63
4.3.60.0010.0164.63
4.3.50.0020.0164.63
4.3.40.0030.0234.54
4.3.30.0020.0153.29
4.3.20.0000.0173.27
4.3.10.0030.0153.23
4.3.00.0100.0236.83

preferences:
45.52 ms | 401 KiB | 5 Q