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) { debug_backtrace(false); } 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)
8.3.60.0430.01380.37
8.3.50.0380.01080.12
8.3.40.0350.01648.04
8.3.30.0320.01048.33
8.3.20.0130.01049.80
8.3.10.0130.00349.77
8.3.00.0190.00050.19
8.2.180.0550.02379.94
8.2.170.0390.01348.21
8.2.160.0210.02148.67
8.2.150.0200.00347.83
8.2.140.0210.00449.76
8.2.130.0330.02049.80
8.2.120.0190.00346.83
8.2.110.0060.01649.98
8.2.100.0190.01346.93
8.2.90.0100.01048.17
8.2.80.0110.01447.05
8.2.70.0130.01046.75
8.2.60.0180.00347.05
8.2.50.0120.01247.00
8.2.40.0110.01147.34
8.2.30.0170.00747.23
8.2.20.0170.00346.82
8.2.10.0070.01146.89
8.2.00.0170.00746.78
8.1.280.0810.00779.37
8.1.270.0250.00351.51
8.1.260.0180.00651.64
8.1.250.0200.00351.61
8.1.240.0060.00651.98
8.1.230.0160.01948.67
8.1.220.0160.00347.04
8.1.210.0150.00646.61
8.1.200.0170.00746.72
8.1.190.0200.01046.91
8.1.180.0160.00748.09
8.1.170.0140.01048.09
8.1.160.0110.01451.40
8.1.150.0120.00847.89
8.1.140.0200.00046.74
8.1.130.0060.01347.05
8.1.120.0100.01046.76
8.1.110.0190.00046.78
8.1.100.0110.00846.78
8.1.90.0130.00746.84
8.1.80.0090.00946.78
8.1.70.0130.00646.75
8.1.60.0130.01046.95
8.1.50.0120.00946.93
8.1.40.0070.01446.87
8.1.30.0100.01046.86
8.1.20.0180.00347.00
8.1.10.0310.00380.80
8.1.00.0190.01680.69
8.0.300.0300.00380.54
8.0.290.0280.00780.18
8.0.280.0350.00381.60
8.0.270.0280.00880.47
8.0.260.0290.01080.00
8.0.250.0290.00379.95
8.0.240.0220.00980.05
8.0.230.0240.01080.18
8.0.220.0150.01679.91
8.0.210.0260.00379.89
8.0.200.0280.00380.07
8.0.190.0380.01080.18
8.0.180.0230.01080.00
8.0.170.0260.01079.99
8.0.160.0280.00780.02
8.0.150.0370.00780.05
8.0.140.0280.00780.08
8.0.130.0590.016136.19
8.0.120.0310.00380.04
8.0.110.0170.01379.95
8.0.100.0280.00680.05
8.0.90.0230.01080.01
8.0.80.0320.04280.07
8.0.70.0240.01079.97
8.0.60.0170.01779.98
8.0.50.0270.00779.96
8.0.30.0670.03380.35
8.0.20.0720.02880.19
8.0.10.0260.01080.05
8.0.00.0730.02279.88
7.4.330.0170.01476.59
7.4.320.0220.00679.68
7.4.300.0170.01479.78
7.4.290.0230.01379.80
7.4.280.0240.00979.73
7.4.270.0230.01379.63
7.4.260.0360.00779.70
7.4.250.0200.01479.75
7.4.240.0240.01179.72
7.4.230.0270.00379.61
7.4.220.0840.04179.59
7.4.210.0550.03379.74
7.4.200.0220.00979.49
7.4.190.0270.00779.84
7.4.160.0600.02279.78
7.4.150.0690.02680.03
7.4.140.0760.03679.78
7.4.130.0770.03379.73
7.4.120.0700.02779.76
7.4.110.0690.02779.71
7.4.100.0730.01979.59
7.4.90.0600.03379.76
7.4.80.0590.05279.67
7.4.70.0650.02779.68
7.4.60.0620.02979.67
7.4.50.0160.02079.93
7.4.40.0300.02379.74
7.4.30.0480.03679.76
7.4.00.0330.02078.07
7.3.330.0420.013136.38
7.3.320.0400.017136.24
7.3.310.0260.01079.38
7.3.300.0250.00979.55
7.3.290.0520.02879.57
7.3.280.0680.03879.57
7.3.270.0620.02679.78
7.3.260.0750.02079.96
7.3.250.0640.02979.81
7.3.240.0510.03579.76
7.3.230.0800.01379.61
7.3.210.0760.03279.63
7.3.200.0590.02979.86
7.3.190.0640.04879.71
7.3.180.0500.03679.54
7.3.170.0650.02679.59
7.3.160.0860.02679.76
7.3.120.0350.02578.17
7.3.110.0360.02078.04
7.3.100.0330.01377.96
7.3.90.0380.01977.87
7.3.80.0390.02677.99
7.3.70.0290.02977.84
7.3.60.0340.01478.01
7.3.50.0360.01678.08
7.3.40.0400.02378.09
7.3.30.0340.02077.80
7.3.20.0030.02078.56
7.3.10.0140.01478.65
7.3.00.0100.02078.59
7.2.330.0580.03279.85
7.2.320.0470.03880.00
7.2.310.0760.03879.80
7.2.300.0610.02679.89
7.2.290.0640.04180.01
7.2.250.0490.02378.13
7.2.240.0450.02978.10
7.2.230.0360.01678.32
7.2.220.0330.02078.14
7.2.210.0470.01378.29
7.2.200.0310.02478.28
7.2.190.0270.02378.29
7.2.180.0300.02078.18
7.2.170.0260.02378.04
7.2.60.1630.01078.89
7.2.00.0660.02080.80
7.1.330.0070.02677.38
7.1.320.0300.01377.69
7.1.310.0200.01077.84
7.1.300.0090.02277.71
7.1.290.0180.02877.64
7.1.280.0130.01677.59
7.1.270.0000.02577.80
7.1.260.0070.02577.73
7.1.200.3220.02777.85
7.1.100.0070.01879.84
7.1.70.1310.01778.73
7.1.60.0300.02079.22
7.1.50.0310.01796.98
7.1.00.0200.08084.22
7.0.200.1640.02278.50
7.0.140.0130.08384.21
7.0.60.0370.09083.21
7.0.50.0270.08781.23
7.0.40.0070.05020.10
7.0.30.0300.09020.07
7.0.20.0270.05320.06
7.0.10.0100.04720.25
7.0.00.0200.09020.15
5.6.280.0330.08785.80
5.6.210.0430.06785.23
5.6.200.0300.10382.90
5.6.190.0400.08785.09
5.6.180.0370.06085.04
5.6.170.0300.06785.13
5.6.160.0200.11084.83
5.6.150.0200.08782.85
5.6.140.0200.09082.82
5.6.130.0370.08082.89
5.6.120.0200.05385.76
5.6.110.0230.05785.61
5.6.100.0270.08785.68
5.6.90.0430.06085.83
5.6.80.0370.08785.09
5.6.70.3930.05385.13
5.5.350.0470.09085.13
5.5.340.0200.08382.70
5.5.330.0230.07384.84
5.5.320.0430.10784.91
5.5.310.0330.10384.93
5.5.300.0100.06082.63
5.5.290.0200.11382.67
5.5.280.0230.11385.58
5.5.270.0270.11085.51
5.5.260.0430.09085.60
5.5.250.0430.08785.32
5.5.240.0270.08784.99
5.4.450.0500.08384.06
5.4.440.0930.09084.32
5.4.430.0930.08783.95
5.4.420.1100.09084.33
5.4.410.0830.11784.01
5.4.400.1730.00083.38
5.4.390.1400.00083.37
5.4.380.0530.08783.42
5.4.370.0830.07083.56
5.4.360.0800.09383.59
5.4.350.0600.09083.53
5.4.340.0630.11083.61
5.4.320.0190.05477.38
5.4.310.0250.05677.38
5.4.300.0180.06377.38
5.4.290.0190.06377.38
5.4.280.0260.06077.28
5.4.270.0180.05677.27
5.4.260.0570.10383.59
5.4.250.0570.10783.53
5.4.240.0530.09083.54
5.4.230.0630.11083.41
5.4.220.0470.08383.55
5.4.210.0330.10783.58
5.4.200.0470.09383.28
5.4.190.0330.08083.66
5.4.180.0370.08383.64
5.4.170.0430.07083.65
5.4.160.0570.09783.50
5.4.150.0600.10083.53
5.4.140.0400.08381.07
5.4.130.0500.07781.20
5.4.120.0400.09080.98
5.4.110.0570.08381.13
5.4.100.0670.07781.10
5.4.90.0470.10381.23
5.4.80.0370.08781.10
5.4.70.0500.10381.09
5.4.60.0300.08081.08
5.4.50.0400.08081.11
5.4.40.0330.07781.23
5.4.30.0470.07381.21
5.4.20.0630.05781.15
5.4.10.0400.08081.14
5.4.00.0330.08380.65
5.3.290.0260.06476.63
5.3.280.0230.09778.35
5.3.270.0400.09078.25
5.3.260.0500.09778.50
5.3.250.0430.07378.38
5.3.240.0600.06778.46
5.3.230.0370.07778.46
5.3.220.0430.08078.66
5.3.210.0400.11078.29
5.3.200.0470.08778.29
5.3.190.0470.09378.31
5.3.180.0570.07378.47
5.3.170.0530.07378.14
5.3.160.0530.11378.46
5.3.150.0430.07778.31
5.3.140.0330.08778.39
5.3.130.0370.10078.45
5.3.120.0530.07378.13
5.3.110.0300.08778.45
5.3.100.0430.08078.49
5.3.90.0300.08377.78
5.3.80.0470.07377.89
5.3.70.0270.13377.81
5.3.60.0400.07777.88
5.3.50.0370.07777.47
5.3.40.0400.10377.82
5.3.30.0570.06777.58
5.3.20.0400.09077.38
5.3.10.0230.09077.47
5.3.00.0570.06377.85
5.2.170.0300.04336.78
5.2.160.0300.04036.87
5.2.150.0330.05036.81
5.2.140.0130.05736.67
5.2.130.0270.07036.64
5.2.120.0230.07036.65
5.2.110.0230.05036.71
5.2.100.0130.08736.65
5.2.90.0370.06736.82
5.2.80.0130.05336.64
5.2.70.0270.04737.16
5.2.60.0200.08036.59
5.2.50.0270.05336.55
5.2.40.0300.04336.48
5.2.30.0330.04036.60
5.2.20.0230.06036.64
5.2.10.0200.04739.14
5.2.00.0200.05736.38
5.1.60.0170.05037.98
5.1.50.0100.05738.00
5.1.40.0300.03338.09
5.1.30.0400.03338.32
5.1.20.0170.04737.44
5.1.10.0230.04037.07
5.1.00.0170.06037.16
5.0.50.0170.04034.18
5.0.40.0230.05034.04
5.0.30.0230.05033.88
5.0.20.0130.04733.97
5.0.10.0130.04033.90
5.0.00.0400.06766.80
4.4.90.0170.02717.61
4.4.80.0100.02017.52
4.4.70.0170.01717.59
4.4.60.0070.03017.52
4.4.50.0130.02017.49
4.4.40.0130.03317.56
4.4.30.0200.02717.53
4.4.20.0100.02317.56
4.4.10.0200.01717.46
4.4.00.0100.04717.47
4.3.110.0200.02023.04
4.3.100.0230.02722.68
4.3.90.0030.03322.59
4.3.80.0370.04733.52
4.3.70.0100.03022.66
4.3.60.0100.02722.61
4.3.50.0170.02322.52
4.3.40.0230.05324.28
4.3.30.0170.03323.09
4.3.20.0070.03716.05
4.3.10.0070.03723.04
4.3.00.0100.03323.07

preferences:
43.35 ms | 401 KiB | 5 Q