3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a($depth = 0) { //return last backtrace call. If backtrace bigger then 3, return third call. if($depth === 1000) { return array_slice(array_filter(array_slice(debug_backtrace(false, 3), 0, 3)), -1, 1); } return a(++$depth, str_repeat("a", 1000)); } var_dump(a());

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)
8.3.40.0100.00620.06
8.3.30.0060.00920.42
8.3.20.0050.00521.90
8.3.10.0040.00422.02
8.3.00.0040.00422.34
8.2.170.0120.00322.96
8.2.160.0090.00620.81
8.2.150.0000.00824.18
8.2.140.0090.00024.66
8.2.130.0000.00826.16
8.2.120.0050.00319.10
8.2.110.0030.00622.25
8.2.100.0060.00619.16
8.2.90.0000.00820.34
8.2.80.0030.00719.28
8.2.70.0040.00418.88
8.2.60.0050.00319.18
8.2.50.0090.00019.47
8.2.40.0090.00022.02
8.2.30.0060.00320.45
8.2.20.0040.00419.07
8.2.10.0060.00319.08
8.2.00.0080.00018.88
8.1.270.0090.00023.69
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0050.00523.79
8.1.230.0040.00819.14
8.1.220.0000.00819.13
8.1.210.0040.00418.77
8.1.200.0040.00718.60
8.1.190.0060.00318.73
8.1.180.0000.00818.78
8.1.170.0050.00320.16
8.1.160.0000.00820.13
8.1.150.0080.00021.44
8.1.140.0030.00518.69
8.1.130.0040.00419.09
8.1.120.0000.00818.80
8.1.110.0030.00618.79
8.1.100.0050.00318.88
8.1.90.0090.00018.80
8.1.80.0000.00718.88
8.1.70.0000.00718.78
8.1.60.0080.00018.99
8.1.50.0050.00318.79
8.1.40.0040.00418.92
8.1.30.0040.00418.98
8.1.20.0000.00918.88
8.1.10.0000.00918.79
8.1.00.0000.00918.90
8.0.300.0060.00319.34
8.0.290.0030.00517.84
8.0.280.0040.00419.88
8.0.270.0030.00518.63
8.0.260.0000.00718.06
8.0.250.0080.00018.31
8.0.240.0040.00418.11
8.0.230.0000.01018.14
8.0.220.0030.00418.23
8.0.210.0000.00718.11
8.0.200.0030.00618.25
8.0.190.0000.00718.32
8.0.180.0040.00418.14
8.0.170.0000.00918.27
8.0.160.0060.00318.32
8.0.150.0000.00818.04
8.0.140.0040.00418.18
8.0.130.0070.00014.65
8.0.120.0030.00618.14
8.0.110.0030.00618.14
8.0.100.0080.00018.10
8.0.90.0000.00818.26
8.0.80.0140.00318.17
8.0.70.0000.00818.21
8.0.60.0040.00418.12
8.0.50.0060.00318.16
8.0.30.0100.01118.50
8.0.20.0080.01218.38
8.0.10.0040.00418.19
8.0.00.0180.00718.05
7.4.330.0050.00015.09
7.4.320.0030.00317.89
7.4.300.0070.00017.79
7.4.290.0040.00417.98
7.4.280.0070.00017.97
7.4.270.0030.00418.03
7.4.260.0030.00817.89
7.4.250.0030.00517.86
7.4.240.0030.00517.86
7.4.230.0040.00418.07
7.4.220.0030.01717.83
7.4.210.0070.01117.97
7.4.200.0000.00917.99
7.4.190.0050.00317.70
7.4.160.0040.01517.86
7.4.150.0130.00717.82
7.4.140.0120.01117.88
7.4.130.0110.00917.90
7.4.120.0110.00817.83
7.4.110.0040.01517.80
7.4.100.0100.01417.79
7.4.90.0160.00817.87
7.4.80.0030.02119.39
7.4.70.0110.00717.66
7.4.60.0070.01417.95
7.4.50.0090.00018.02
7.4.40.0110.00722.77
7.4.30.0030.01317.93
7.4.00.0070.01116.60
7.3.330.0030.00314.60
7.3.320.0000.00714.74
7.3.310.0000.00717.75
7.3.300.0040.00417.73
7.3.290.0150.00917.74
7.3.280.0100.01017.73
7.3.270.0180.00717.69
7.3.260.0120.00818.00
7.3.250.0110.01017.86
7.3.240.0180.01017.94
7.3.230.0110.00717.80
7.3.210.0080.01118.00
7.3.200.0120.00619.39
7.3.190.0130.00717.82
7.3.180.0090.00917.79
7.3.170.0100.01017.84
7.3.160.0120.00917.88
7.3.120.0030.01016.34
7.2.330.0070.01518.03
7.2.320.0030.01618.21
7.2.310.0080.01718.26
7.2.300.0150.00317.88
7.2.290.0160.01417.87
7.2.60.0030.01316.94
7.2.00.0030.01019.21
7.1.200.0040.01115.81
7.1.100.0090.00318.09
7.1.70.0000.01117.12
7.1.60.0100.01019.82
7.1.50.0070.00416.89
7.1.00.0030.07322.42
7.0.200.0040.00416.88
7.0.140.0070.07022.15
7.0.60.0100.08321.46
7.0.50.0030.04319.31
7.0.40.0070.04720.26
7.0.30.0270.08020.15
7.0.20.0200.04320.09
7.0.10.0170.04020.31
7.0.00.0200.07020.07
5.6.280.0000.08022.59
5.6.210.0200.07322.23
5.6.200.0170.07319.73
5.6.190.0030.04321.96
5.6.180.3600.04322.01
5.6.170.0570.06021.97
5.6.160.0070.08721.94
5.6.150.0100.07719.69
5.6.140.0030.04019.78
5.6.130.0100.05319.68
5.6.120.0130.08322.54
5.6.110.0070.08722.51
5.6.100.0070.07722.68
5.6.90.0070.07722.43
5.6.80.0030.08722.03
5.6.70.0430.05021.97
5.5.350.0000.03721.98
5.5.340.0030.08319.55
5.5.330.0130.08021.71
5.5.320.0200.05021.77
5.5.310.0230.04021.69
5.5.300.0070.08019.54
5.5.290.0030.04319.48
5.5.280.0070.04022.23
5.5.270.0170.07322.33
5.5.260.0130.07722.34
5.5.250.0170.07322.23
5.5.240.0100.08021.65
5.4.450.0530.05320.96
5.4.440.0700.06720.86
5.4.430.0630.05720.92
5.4.420.0570.05720.97
5.4.410.0630.05020.70
5.4.400.0870.00020.31
5.4.390.0870.00020.09
5.4.380.0330.04720.25
5.4.370.0300.05020.25
5.4.360.0230.05720.20
5.4.350.0230.06720.16
5.4.340.0200.06720.04
5.4.320.0080.03714.01
5.4.310.0060.04214.01
5.4.300.0040.04514.00
5.4.290.0060.03714.00
5.4.280.0070.03713.90
5.4.270.0050.04313.90
5.4.260.0130.04720.28
5.4.250.0100.05720.14
5.4.240.0170.04720.27
5.4.230.0170.06320.38
5.4.220.0170.05320.37
5.4.210.0130.05320.27
5.4.200.0130.05320.11
5.4.190.0200.07320.22
5.4.180.0130.05720.24
5.4.170.0230.04720.01
5.4.160.0070.07320.30
5.4.150.0200.05320.25
5.4.140.0070.05317.70
5.4.130.0130.04317.79
5.4.120.0100.05017.70
5.4.110.0100.07717.95
5.4.100.0070.05717.81
5.4.90.0170.06717.92
5.4.80.0200.06717.84
5.4.70.0130.06017.70
5.4.60.0100.05017.89
5.4.50.0130.06717.81
5.4.40.0200.04317.88
5.4.30.0230.05717.75
5.4.20.0030.06717.75
5.4.10.0030.06017.85
5.4.00.0100.06317.28
5.3.290.0060.03914.25
5.3.280.0100.05016.03
5.3.270.0100.06015.89
5.3.260.0070.06016.11
5.3.250.0130.04715.93
5.3.240.0070.05316.04
5.3.230.0170.04316.04
5.3.220.0030.05715.93
5.3.210.0070.08015.93
5.3.200.0130.05015.77
5.3.190.0170.06315.73
5.3.180.0070.05716.04
5.3.170.0130.05015.90
5.3.160.0100.04716.11
5.3.150.0030.06716.04
5.3.140.0200.05015.90
5.3.130.0100.05715.91
5.3.120.0230.04716.06
5.3.110.0070.08315.91
5.3.100.0070.06715.39
5.3.90.0130.07015.45
5.3.80.0100.06715.05
5.3.70.0130.06315.05
5.3.60.0030.05715.30
5.3.50.0070.06315.27
5.3.40.0100.05015.51
5.3.30.0100.05015.35
5.3.20.0070.06715.13
5.3.10.0030.06015.03
5.3.00.0170.06314.78
5.2.170.0070.04312.90
5.2.160.0070.04312.97
5.2.150.0000.05713.03
5.2.140.0100.04313.07
5.2.130.0070.04012.91
5.2.120.0130.05312.86
5.2.110.0030.06313.00
5.2.100.0070.04313.02
5.2.90.0070.04012.86
5.2.80.0130.03712.67
5.2.70.0000.06712.83
5.2.60.0100.06012.95
5.2.50.0100.05013.23
5.2.40.0030.04712.88
5.2.30.0100.04712.69
5.2.20.0070.06312.60
5.2.10.0170.04712.77
5.2.00.0030.06312.63
5.1.60.0130.06012.27
5.1.50.0000.04012.43
5.1.40.0030.04312.09
5.1.30.0070.03712.52
5.1.20.0030.04712.57
5.1.10.0030.05312.43
5.1.00.0170.04312.25
5.0.50.0070.04010.90
5.0.40.0070.04010.62
5.0.30.0000.06010.57
5.0.20.0000.04310.49
5.0.10.0100.03710.52
5.0.00.0100.05310.36
4.4.90.0070.02310.52
4.4.80.0030.03710.61
4.4.70.0130.02010.55
4.4.60.0070.03010.66
4.4.50.0100.02010.73
4.4.40.0070.05010.65
4.4.30.0070.03310.57
4.4.20.0030.03310.65
4.4.10.0100.02710.57
4.4.00.0130.03010.81
4.3.110.0130.0278.77
4.3.100.0030.0308.73
4.3.90.0030.0238.81
4.3.80.0070.0478.70
4.3.70.0000.0338.75
4.3.60.0070.0308.75
4.3.50.0000.0408.72
4.3.40.0070.0438.54
4.3.30.0070.0307.35
4.3.20.0030.0379.41
4.3.10.0030.0277.29
4.3.00.0100.0239.32

preferences:
40.97 ms | 400 KiB | 5 Q