3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 'string'; echo $var[-1];

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)
8.3.60.0140.00416.38
8.3.50.0080.01221.22
8.3.40.0160.00618.66
8.3.30.0090.00918.70
8.3.20.0000.00820.21
8.3.10.0080.00023.61
8.3.00.0000.00821.90
8.2.180.0090.00916.63
8.2.170.0160.00322.96
8.2.160.0110.00320.47
8.2.150.0080.00024.18
8.2.140.0030.00524.66
8.2.130.0100.00320.94
8.2.120.0070.01026.35
8.2.110.0060.00319.38
8.2.100.0040.00718.01
8.2.90.0040.00419.40
8.2.80.0050.00317.97
8.2.70.0090.00017.63
8.2.60.0060.00317.92
8.2.50.0040.00418.09
8.2.40.0000.00822.32
8.2.30.0050.00219.43
8.2.20.0040.00417.65
8.2.10.0070.00017.98
8.2.00.0040.00418.00
8.1.280.0100.01325.92
8.1.270.0040.00422.23
8.1.260.0050.00228.09
8.1.250.0040.00428.09
8.1.240.0000.00922.57
8.1.230.0070.00417.89
8.1.220.0060.00317.74
8.1.210.0000.00918.77
8.1.200.0060.00317.23
8.1.190.0040.00417.13
8.1.180.0040.00418.10
8.1.170.0060.00318.33
8.1.160.0000.00720.68
8.1.150.0070.00318.75
8.1.140.0000.00819.41
8.1.130.0030.00317.54
8.1.120.0040.00417.38
8.1.110.0030.00617.38
8.1.100.0040.00417.27
8.1.90.0060.00317.36
8.1.80.0030.00517.28
8.1.70.0030.00317.34
8.1.60.0040.00417.39
8.1.50.0040.00417.34
8.1.40.0000.00817.34
8.1.30.0040.00417.52
8.1.20.0000.00817.64
8.1.10.0040.00417.55
8.1.00.0040.00417.36
8.0.300.0050.00318.77
8.0.290.0070.00016.58
8.0.280.0030.00318.43
8.0.270.0000.00817.16
8.0.260.0030.00318.51
8.0.250.0000.00616.84
8.0.240.0000.00716.96
8.0.230.0040.00416.94
8.0.220.0050.00216.78
8.0.210.0000.00716.82
8.0.200.0040.00616.93
8.0.190.0060.00316.92
8.0.180.0030.00516.82
8.0.170.0040.00416.79
8.0.160.0030.00316.82
8.0.150.0080.00016.82
8.0.140.0030.00316.75
8.0.130.0060.00013.29
8.0.120.0040.00416.75
8.0.110.0040.00416.79
8.0.100.0030.00316.67
8.0.90.0040.00416.93
8.0.80.0090.00616.77
8.0.70.0040.00416.67
8.0.60.0000.00716.77
8.0.50.0040.00416.88
8.0.30.0040.01217.00
8.0.20.0140.00717.40
8.0.10.0050.00317.06
8.0.00.0060.01116.74
7.4.330.0050.00016.81
7.4.320.0030.00316.45
7.4.300.0040.00416.28
7.4.290.0070.00416.53
7.4.280.0090.00016.52
7.4.270.0030.00316.57
7.4.260.0030.00616.46
7.4.250.0000.00816.50
7.4.240.0000.00716.40
7.4.230.0000.00716.51
7.4.220.0090.01016.48
7.4.210.0100.00316.59
7.4.200.0030.00316.62
7.4.160.0080.00816.38
7.4.150.0150.00317.40
7.4.140.0100.01017.86
7.4.130.0130.00616.35
7.4.120.0100.00716.56
7.4.110.0180.00616.34
7.4.100.0100.00616.32
7.4.90.0060.01116.29
7.4.80.0120.00619.39
7.4.70.0060.01016.48
7.4.60.0070.01016.54
7.4.50.0060.00616.27
7.4.40.0090.00616.43
7.4.30.0090.00916.34
7.4.00.0030.01415.08
7.3.330.0000.00513.06
7.3.320.0000.00513.11
7.3.310.0000.00716.26
7.3.300.0040.00416.17
7.3.290.0100.00616.24
7.3.280.0090.00916.21
7.3.270.0130.00917.40
7.3.260.0140.00316.30
7.3.250.0090.00916.32
7.3.240.0140.00316.49
7.3.230.0100.00716.39
7.3.210.0090.01216.64
7.3.200.0080.01119.39
7.3.190.0090.00616.39
7.3.180.0150.00616.21
7.3.170.0140.00616.29
7.3.160.0090.01216.13
7.2.330.0100.00716.43
7.2.320.0130.01016.64
7.2.310.0130.00316.66
7.2.300.0000.01716.61
7.2.290.0170.00716.65
7.2.60.0060.00916.79
7.2.00.0090.00619.55
7.1.200.0040.01115.64
7.1.100.0030.01017.80
7.1.70.0000.00916.80
7.1.60.0060.01819.40
7.1.50.0110.01116.88
7.1.00.0030.07022.37
7.0.200.0030.00716.78
7.0.60.0230.07321.76
7.0.50.0070.05317.80
7.0.40.0100.03719.90
7.0.30.0370.07320.32
7.0.20.0330.07320.33
7.0.10.0070.07020.30
7.0.00.0030.04320.16
5.6.280.0030.03021.04
5.6.210.0100.06720.49
5.6.200.0030.05718.21
5.6.190.0100.07020.41
5.6.180.0230.04020.77
5.6.170.0430.07720.54
5.6.160.0100.04320.40
5.6.150.0130.07718.18
5.6.140.0030.04318.16
5.6.130.0030.06718.07
5.6.120.0030.04721.01
5.6.110.0100.08321.00
5.6.100.0070.07020.98
5.6.90.0100.06021.09
5.6.80.0100.08320.41
5.5.350.0400.06720.41
5.5.340.0000.04718.02
5.5.330.0130.07720.07
5.5.320.0370.04320.13
5.5.310.0330.05020.22
5.5.300.0100.05017.91
5.5.290.0130.04017.95
5.5.280.0100.06020.97
5.5.270.0070.08720.75
5.5.260.0130.08320.76
5.5.250.0130.07720.68
5.5.240.0170.07320.18

preferences:
54.53 ms | 401 KiB | 5 Q