3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 5; echo substr('abcdefgh', -4, -2);

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)
8.3.60.0100.00718.18
8.3.50.0080.00721.02
8.3.40.0150.00318.45
8.3.30.0080.00619.09
8.3.20.0020.00520.20
8.3.10.0030.00621.91
8.3.00.0000.00822.51
8.2.180.0070.00716.50
8.2.170.0160.00322.96
8.2.160.0140.00019.09
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0060.00326.16
8.2.120.0000.00819.54
8.2.110.0060.00322.20
8.2.100.0100.00019.21
8.2.90.0050.00319.19
8.2.80.0060.00319.34
8.2.70.0060.00317.25
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0030.00618.22
8.2.30.0020.00518.03
8.2.20.0000.00717.53
8.2.10.0050.00217.48
8.2.00.0060.00317.54
8.1.280.0070.01425.92
8.1.270.0000.00820.32
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0060.00923.81
8.1.230.0070.00419.15
8.1.220.0000.00817.74
8.1.210.0080.00018.77
8.1.200.0060.00317.11
8.1.190.0040.00417.38
8.1.180.0060.00318.50
8.1.170.0040.00418.58
8.1.160.0030.00322.14
8.1.150.0070.00018.58
8.1.140.0050.00217.34
8.1.130.0000.00717.93
8.1.120.0070.00017.50
8.1.110.0000.00717.34
8.1.100.0050.00217.30
8.1.90.0040.00417.31
8.1.80.0030.00317.29
8.1.70.0030.00317.35
8.1.60.0030.00517.45
8.1.50.0000.00817.45
8.1.40.0040.00417.48
8.1.30.0000.00717.46
8.1.20.0030.00617.58
8.1.10.0070.00017.49
8.1.00.0070.00017.42
8.0.300.0070.00018.77
8.0.290.0000.00817.16
8.0.280.0040.00418.35
8.0.270.0030.00317.26
8.0.260.0060.00018.45
8.0.250.0000.00716.85
8.0.240.0000.00817.01
8.0.230.0030.00316.80
8.0.220.0070.00016.81
8.0.210.0040.00416.76
8.0.200.0030.00316.86
8.0.190.0000.00716.85
8.0.180.0040.00716.81
8.0.170.0040.00416.75
8.0.160.0040.00416.84
8.0.150.0000.00716.84
8.0.140.0000.00716.79
8.0.130.0030.00313.19
8.0.120.0040.00416.74
8.0.110.0000.00716.84
8.0.100.0000.00716.75
8.0.90.0000.00716.89
8.0.80.0070.01016.84
8.0.70.0060.00316.87
8.0.60.0040.00416.65
8.0.50.0000.00716.68
8.0.30.0120.00716.85
8.0.20.0100.00917.40
8.0.10.0030.00516.82
8.0.00.0120.00616.70
7.4.330.0000.00415.00
7.4.320.0000.00716.54
7.4.300.0000.00616.41
7.4.290.0030.00316.54
7.4.280.0030.00316.32
7.4.270.0000.00716.54
7.4.260.0030.00316.36
7.4.250.0080.00016.41
7.4.240.0040.00316.45
7.4.230.0030.00316.64
7.4.220.0130.01316.44
7.4.210.0080.00816.58
7.4.200.0000.00716.54
7.4.190.0050.00216.62
7.4.160.0080.00816.54
7.4.150.0030.01417.40
7.4.140.0090.01117.86
7.4.130.0070.00816.39
7.4.120.0090.00916.39
7.4.110.0090.00916.26
7.4.100.0100.00716.64
7.4.90.0100.00716.34
7.4.80.0090.00919.39
7.4.70.0120.00616.33
7.4.60.0090.01216.51
7.4.50.0030.00616.57
7.4.40.0000.01422.77
7.4.30.0130.00316.47
7.4.00.0070.01014.96
7.3.330.0000.00613.05
7.3.320.0030.00313.08
7.3.310.0000.00716.20
7.3.300.0000.00616.03
7.3.290.0060.01316.09
7.3.280.0080.01116.11
7.3.270.0000.01617.40
7.3.260.0140.00416.52
7.3.250.0110.00516.21
7.3.240.0080.00816.21
7.3.230.0100.00716.47
7.3.210.0060.01016.21
7.3.200.0060.01019.39
7.3.190.0070.01116.44
7.3.180.0130.00316.11
7.3.170.0120.00916.27
7.3.160.0100.01016.36
7.3.120.0110.00314.75
7.2.330.0070.01016.58
7.2.320.0000.02016.29
7.2.310.0080.00816.57
7.2.300.0100.00716.14
7.2.290.0090.00616.29
7.2.00.0030.01019.38
7.1.200.0040.00715.77
7.1.100.0030.00618.17
7.1.70.0070.00316.78
7.1.60.0060.01919.82
7.1.50.0160.00316.82
7.1.00.0100.02722.57
7.0.200.0000.01016.64
7.0.140.0000.07322.08
7.0.60.0100.08019.83
7.0.50.0170.07317.88
7.0.40.0070.05720.30
7.0.30.0230.04320.09
7.0.20.0200.08019.99
7.0.10.0230.07320.17
7.0.00.0070.09020.09
5.6.280.0100.06720.81
5.6.210.0130.07320.75
5.6.200.0170.07718.19
5.6.190.0100.06320.76
5.6.180.0400.07320.39
5.6.170.0170.04720.41
5.6.160.0100.05320.48
5.6.150.0030.06718.15
5.6.140.0030.04018.18
5.6.130.0030.04018.09
5.6.120.0030.04021.08
5.6.110.0170.08020.97
5.6.100.0230.07021.14
5.6.90.0200.05720.99
5.6.80.0100.05020.32
5.6.70.0200.05720.38
5.5.350.0370.07020.40
5.5.340.0100.07718.01
5.5.330.0100.05720.45
5.5.320.0300.07320.21
5.5.310.0230.07020.18
5.5.300.0030.08718.02
5.5.290.0070.06717.89
5.5.280.0070.07720.79
5.5.270.0000.06320.85
5.5.260.0030.05320.63
5.5.250.0130.07320.68
5.5.240.0070.04720.26
5.4.450.0570.06719.14
5.4.440.0330.04319.57
5.4.430.0470.06319.13
5.4.420.0400.05019.26
5.4.410.0500.06719.11
5.4.400.0500.05318.93
5.4.390.0400.04319.13
5.4.380.0470.05318.80
5.4.370.0500.06019.21
5.4.360.0370.04018.93
5.4.350.0330.04019.13
5.4.340.0430.06019.24
5.4.320.0500.06719.08
5.4.310.0470.06319.24
5.4.300.0470.03319.17
5.4.290.0430.05719.16
5.4.280.0430.07019.06
5.4.270.0370.04019.24
5.4.260.0400.04019.23
5.4.250.0370.07318.80
5.4.240.0430.05719.13
5.4.230.0370.03719.08
5.4.220.0530.06718.92
5.4.210.0530.04019.21
5.4.200.0570.05719.08
5.4.190.0500.06318.87
5.4.180.0270.04719.12
5.4.170.0670.02719.14
5.4.160.0270.05018.89
5.4.150.0430.03718.91
5.4.140.0300.03716.46
5.4.130.0230.04016.28
5.4.120.0430.03716.39
5.4.110.0270.03716.47
5.4.100.0300.03316.38
5.4.90.0200.04316.39
5.4.80.0300.03716.29
5.4.70.0330.03316.21
5.4.60.0400.04016.17
5.4.50.0270.03716.28
5.4.40.0270.03716.09
5.4.30.0300.03716.27
5.4.20.0300.03316.36
5.4.10.0270.03716.36
5.4.00.0370.02715.73
5.3.290.0470.06314.75
5.3.280.0400.03314.44
5.3.270.0500.04714.65
5.3.260.0430.03014.55
5.3.250.0370.03714.44
5.3.240.0270.04014.45
5.3.230.0270.04014.54
5.3.220.0400.03014.51
5.3.210.0330.03714.47
5.3.200.0300.03714.65
5.3.190.0370.03014.42
5.3.180.0270.04014.52
5.3.170.0330.03714.54
5.3.160.0330.04714.46
5.3.150.0300.03314.40
5.3.140.0370.03014.39
5.3.130.0330.04014.40
5.3.120.0330.03314.40
5.3.110.0530.04714.49
5.3.100.0330.03313.91
5.3.90.0300.03313.86
5.3.80.0370.03014.00
5.3.70.0300.03313.89
5.3.60.0230.04014.05
5.3.50.0300.03714.03
5.3.40.0200.04313.71
5.3.30.0270.03713.75
5.3.20.0300.03313.61
5.3.10.0400.03713.58
5.3.00.0400.03713.54
5.2.170.0300.02311.71
5.2.160.0270.02711.71
5.2.150.0270.04311.71
5.2.140.0300.03711.71
5.2.130.0270.02311.71
5.2.120.0270.02711.71
5.2.110.0270.02711.71
5.2.100.0330.03011.71
5.2.90.0270.02711.71
5.2.80.0200.03311.71
5.2.70.0270.03711.71
5.2.60.0300.03011.71
5.2.50.0270.03711.71
5.2.40.0170.03311.71
5.2.30.0330.03011.71
5.2.20.0330.03011.71
5.2.10.0330.05311.71
5.2.00.0330.05311.71
5.1.60.0370.04311.71
5.1.50.0300.03011.71
5.1.40.0330.03011.71
5.1.30.0330.04311.71
5.1.20.0330.04011.71
5.1.10.0230.04311.71
5.1.00.0330.04011.71
5.0.50.0200.04011.71
5.0.40.0200.03311.71
5.0.30.0200.06011.71
5.0.20.0200.03711.71
5.0.10.0170.02711.71
5.0.00.0170.03311.71
4.4.90.0170.02311.71
4.4.80.0170.02711.71
4.4.70.0230.02711.71
4.4.60.0200.02311.71
4.4.50.0170.02711.71
4.4.40.0230.04311.71
4.4.30.0170.03311.71
4.4.20.0200.03011.71
4.4.10.0230.02711.71
4.4.00.0200.04711.71
4.3.110.0230.03011.71
4.3.100.0170.02711.71
4.3.90.0130.02311.71
4.3.80.0130.02311.71
4.3.70.0100.01711.71
4.3.60.0170.02311.65
4.3.50.0130.01711.65
4.3.40.0170.03711.65
4.3.30.0070.02011.65
4.3.20.0130.01711.65
4.3.10.0070.03311.65
4.3.00.0030.03311.65

preferences:
40.51 ms | 400 KiB | 5 Q