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) { if(PHP_VERSION_ID >= 50400) { return array_slice(array_filter(array_slice(debug_backtrace(~ DEBUG_BACKTRACE_PROVIDE_OBJECT & ~ DEBUG_BACKTRACE_IGNORE_ARGS, 3), 0, 3)), -1, 1); } else if(PHP_VERSION_ID >= 50306) { return array_slice(array_filter(array_slice(debug_backtrace(~ DEBUG_BACKTRACE_PROVIDE_OBJECT), 0, 3)), -1, 1); } else return array_slice(array_filter(array_slice(debug_backtrace(~ DEBUG_BACKTRACE_PROVIDE_OBJECT), 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)
8.3.60.0060.01320.48
8.3.50.0060.00923.03
8.3.40.0200.00020.34
8.3.30.0110.00720.68
8.3.20.0080.00021.84
8.3.10.0030.00524.13
8.3.00.0080.00024.40
8.2.180.0180.00418.38
8.2.170.0100.00622.96
8.2.160.0210.00022.64
8.2.150.0060.00324.18
8.2.140.0090.00024.66
8.2.130.0060.01026.16
8.2.120.0060.01321.24
8.2.110.0030.00724.35
8.2.100.0100.00319.34
8.2.90.0030.00620.73
8.2.80.0040.00419.25
8.2.70.0060.00319.13
8.2.60.0000.00919.18
8.2.50.0070.00319.00
8.2.40.0110.00021.98
8.2.30.0050.00321.06
8.2.20.0000.00919.22
8.2.10.0050.00319.19
8.2.00.0000.00819.23
8.1.280.0090.00625.92
8.1.270.0040.00423.99
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00325.89
8.1.230.0070.00719.27
8.1.220.0090.00319.16
8.1.210.0030.00618.85
8.1.200.0060.00318.86
8.1.190.0060.00318.85
8.1.180.0000.01018.73
8.1.170.0060.00320.21
8.1.160.0050.00323.75
8.1.150.0030.00520.13
8.1.140.0040.00419.01
8.1.130.0000.00819.30
8.1.120.0040.00418.99
8.1.110.0040.00418.93
8.1.100.0080.00018.96
8.1.90.0050.00318.82
8.1.80.0040.00418.87
8.1.70.0040.00418.88
8.1.60.0070.00319.08
8.1.50.0040.00419.11
8.1.40.0000.00919.14
8.1.30.0030.00619.11
8.1.20.0000.00919.11
8.1.10.0000.00819.10
8.1.00.0050.00319.04
8.0.300.0080.00019.77
8.0.290.0060.00318.13
8.0.280.0040.00419.86
8.0.270.0030.00618.60
8.0.260.0070.00318.19
8.0.250.0040.00418.38
8.0.240.0000.00818.42
8.0.230.0030.00618.50
8.0.220.0020.00518.40
8.0.210.0070.00018.41
8.0.200.0030.00518.41
8.0.190.0070.00318.31
8.0.180.0040.00418.28
8.0.170.0040.00418.34
8.0.160.0040.00418.38
8.0.150.0090.00018.39
8.0.140.0080.00018.34
8.0.130.0030.00314.75
8.0.120.0000.00818.29
8.0.110.0080.00018.38
8.0.100.0040.00418.27
8.0.90.0080.00018.42
8.0.80.0130.00318.40
8.0.70.0040.00418.38
8.0.60.0000.00818.42
8.0.50.0090.00018.32
8.0.30.0190.00618.48
8.0.20.0100.01618.57
8.0.10.0060.00318.45
8.0.00.0180.00418.13
7.4.330.0070.00015.00
7.4.320.0070.00017.95
7.4.300.0000.00718.00
7.4.290.0000.00717.98
7.4.280.0000.00717.99
7.4.270.0040.00418.15
7.4.260.0040.00418.07
7.4.250.0040.00417.95
7.4.240.0050.00318.03
7.4.230.0020.00518.12
7.4.220.0100.01018.02
7.4.210.0100.00718.13
7.4.200.0070.00017.93
7.4.190.0050.00317.87
7.4.160.0130.00417.94
7.4.150.0110.01017.97
7.4.140.0140.00518.02
7.4.130.0130.00917.96
7.4.120.0080.01118.08
7.4.110.0070.01717.94
7.4.100.0160.00418.04
7.4.90.0180.00517.97
7.4.80.0080.01619.39
7.4.70.0200.00317.90
7.4.60.0090.00917.98
7.4.50.0030.00717.73
7.4.40.0080.00822.77
7.4.30.0070.01118.11
7.4.00.0060.01216.43
7.3.330.0060.00014.88
7.3.320.0060.00014.74
7.3.310.0000.00817.82
7.3.300.0040.00417.93
7.3.290.0150.00317.84
7.3.280.0110.00817.94
7.3.270.0170.01017.94
7.3.260.0070.01617.82
7.3.250.0110.00818.10
7.3.240.0100.01017.87
7.3.230.0100.00917.95
7.3.210.0160.00418.20
7.3.200.0070.01119.39
7.3.190.0160.00318.05
7.3.180.0090.00918.17
7.3.170.0130.00918.08
7.3.160.0170.00418.02
7.3.120.0000.01916.13
7.2.330.0090.01118.03
7.2.320.0090.00918.19
7.2.310.0070.01318.23
7.2.300.0110.00717.86
7.2.290.0030.01818.19
7.2.60.0000.01117.02
7.2.00.0090.00619.04
7.1.200.0060.00615.77
7.1.70.0060.00317.06
7.1.60.0000.01116.75
7.1.50.0200.02034.50
7.1.00.0000.08022.45
7.0.200.0000.01716.87
7.0.140.0030.07022.01
7.0.60.0000.04721.47
7.0.50.0070.05019.40
7.0.40.0030.04720.30
7.0.30.0270.07720.38
7.0.20.0330.05720.10
7.0.10.0030.08320.24
7.0.00.0100.07720.23
5.6.280.0170.06323.00
5.6.210.0030.05722.65
5.6.200.0030.05020.05
5.6.190.0070.09322.32
5.6.180.0470.04722.27
5.6.170.0270.08322.33
5.6.160.0100.08322.33
5.6.150.0070.08020.13
5.6.140.0000.04320.09
5.6.130.0130.07720.07
5.6.120.0100.04023.05
5.6.110.0130.07022.95
5.6.100.0130.06723.04
5.6.90.0130.03023.04
5.6.80.0000.08722.41
5.5.350.0200.05322.35
5.5.340.0130.07319.89
5.5.330.0100.08022.19
5.5.320.0330.06022.18
5.5.310.0500.06322.06
5.5.300.0100.04719.89
5.5.290.0130.08019.87
5.5.280.0070.08722.89
5.5.270.0130.03322.87
5.5.260.0200.03022.66
5.5.250.0100.07722.42
5.5.240.0030.07722.00
5.4.450.0470.06021.34
5.4.440.0870.06721.18
5.4.430.0270.05021.10
5.4.420.0200.05721.18
5.4.410.0270.05321.35
5.4.400.0830.00020.82
5.4.390.0870.00020.73
5.4.380.0230.05720.71
5.4.370.0500.04320.45
5.4.360.0270.05020.75
5.4.350.0330.05020.68
5.4.340.0500.04720.54
5.4.320.0070.04114.48
5.4.310.0080.03814.47
5.4.300.0100.04414.48
5.4.290.0060.04514.48
5.4.280.0110.04314.37
5.4.270.0080.04514.38
5.4.260.0100.05320.77
5.4.250.0030.05720.53
5.4.240.0130.06020.53
5.4.230.0130.06320.70
5.4.220.0100.06320.49
5.4.210.0270.05720.62
5.4.200.0070.05320.50
5.4.190.0100.05320.78
5.4.180.0070.05720.86
5.4.170.0100.06020.79
5.4.160.0170.07020.82
5.4.150.0130.07020.79
5.4.140.0070.06018.30
5.4.130.0130.06718.25
5.4.120.0070.06018.31
5.4.110.0030.07718.31
5.4.100.0070.05318.27
5.4.90.0170.06318.24
5.4.80.0030.05318.27
5.4.70.0200.04718.22
5.4.60.0100.06318.27
5.4.50.0130.06318.27
5.4.40.0070.07318.41
5.4.30.0070.05318.41
5.4.20.0070.06318.28
5.4.10.0100.06018.35
5.4.00.0070.05317.78
5.3.290.0070.04115.55
5.3.280.0030.06017.44
5.3.270.0070.05717.41
5.3.260.0070.06017.38
5.3.250.0100.06017.36
5.3.240.0070.05317.29
5.3.230.0170.06017.25
5.3.220.0070.06317.21
5.3.210.0100.06717.42
5.3.200.0130.06317.31
5.3.190.0100.07717.30
5.3.180.0100.05317.14
5.3.170.0070.06317.33
5.3.160.0100.05017.36
5.3.150.0070.06317.23
5.3.140.0200.06317.38
5.3.130.0200.05317.28
5.3.120.0170.05317.05
5.3.110.0100.05717.05
5.3.100.0100.07316.77
5.3.90.0100.07016.55
5.3.80.0130.07316.77
5.3.70.0000.06316.76
5.3.60.0130.05016.71
5.3.50.0130.05017.15
5.3.40.0170.04317.16
5.3.30.0130.04317.04
5.3.20.0070.07316.79
5.3.10.0100.04716.76
5.3.00.0000.06016.59
5.2.170.0200.05715.12
5.2.160.0170.04015.05
5.2.150.0170.03715.06
5.2.140.0130.04315.13
5.2.130.0100.06014.87
5.2.120.0030.04714.91
5.2.110.0130.04714.99
5.2.100.0100.04015.25
5.2.90.0130.03315.00
5.2.80.0030.05014.84
5.2.70.0070.04315.05
5.2.60.0100.04715.01
5.2.50.0100.04014.92
5.2.40.0200.03013.52
5.2.30.0100.03713.46
5.2.20.0100.04313.46
5.2.10.0130.04013.54
5.2.00.0130.03713.49
5.1.60.0130.03312.89
5.1.50.0170.03713.03
5.1.40.0100.05013.01
5.1.30.0100.04713.46
5.1.20.0100.05013.32
5.1.10.0230.02313.13
5.1.00.0070.05713.22
5.0.50.0070.04311.49
5.0.40.0100.03011.57
5.0.30.0130.03711.38
5.0.20.0030.03011.35
5.0.10.0030.04011.23
5.0.00.0130.04011.26
4.4.90.0070.03311.87
4.4.80.0100.03011.70
4.4.70.0030.03711.79
4.4.60.0000.02711.79
4.4.50.0100.02711.77
4.4.40.0100.04311.77
4.4.30.0030.02711.75
4.4.20.0000.04011.80
4.4.10.0000.03711.78
4.4.00.0070.04311.88
4.3.110.0030.0379.89
4.3.100.0070.0309.93
4.3.90.0030.0339.93
4.3.80.0000.0379.88
4.3.70.0070.0209.96
4.3.60.0030.0239.82
4.3.50.0070.0239.93
4.3.40.0000.0379.66
4.3.30.0130.0338.49
4.3.20.0030.02710.56
4.3.10.0070.0208.39
4.3.00.0130.0238.32

preferences:
57.66 ms | 401 KiB | 5 Q