3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('1234567', -8, 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)
8.3.70.0140.00718.44
8.3.60.0040.01118.40
8.3.50.0120.00821.20
8.3.40.0090.01218.58
8.3.30.0160.00618.46
8.3.20.0040.00418.51
8.3.10.0000.00820.03
8.3.00.0040.00417.80
8.2.190.0090.00618.13
8.2.180.0100.01018.16
8.2.170.0100.00322.96
8.2.160.0040.01119.21
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0070.00020.86
8.2.120.0040.00426.35
8.2.110.0100.00319.39
8.2.100.0000.01217.89
8.2.90.0000.00819.13
8.2.80.0000.00817.97
8.2.70.0030.00617.63
8.2.60.0080.00017.80
8.2.50.0050.00318.10
8.2.40.0060.00320.60
8.2.30.0040.00420.43
8.2.20.0030.00617.66
8.2.10.0040.00417.79
8.2.00.0000.00717.80
8.1.280.0110.00425.92
8.1.270.0040.00423.84
8.1.260.0080.00028.09
8.1.250.0030.01028.09
8.1.240.0060.00322.46
8.1.230.0040.00717.70
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0000.00817.11
8.1.190.0000.00817.10
8.1.180.0080.00018.10
8.1.170.0040.00419.03
8.1.160.0050.00318.93
8.1.150.0000.00718.64
8.1.140.0080.00019.44
8.1.130.0070.00017.50
8.1.120.0000.00717.31
8.1.110.0050.00317.32
8.1.100.0000.00717.36
8.1.90.0040.00417.31
8.1.80.0030.00317.29
8.1.70.0070.00017.32
8.1.60.0070.00017.35
8.1.50.0000.00717.27
8.1.40.0050.00317.30
8.1.30.0030.00517.46
8.1.20.0050.00317.44
8.1.10.0080.00017.35
8.1.00.0070.00317.25
8.0.300.0040.00418.77
8.0.290.0060.00316.63
8.0.280.0030.00318.28
8.0.270.0070.00017.12
8.0.260.0030.00317.19
8.0.250.0030.00316.82
8.0.240.0040.00416.79
8.0.230.0000.00716.83
8.0.220.0080.00016.77
8.0.210.0000.00816.70
8.0.200.0030.00316.82
8.0.190.0000.00716.77
8.0.180.0050.00316.79
8.0.170.0040.00416.82
8.0.160.0070.00016.71
8.0.150.0000.00716.76
8.0.140.0000.00716.71
8.0.130.0000.00613.13
8.0.120.0030.00516.58
8.0.110.0040.00416.76
8.0.100.0070.00016.78
8.0.90.0040.00316.79
8.0.80.0060.01016.72
8.0.70.0000.00716.64
8.0.60.0000.00716.79
8.0.50.0040.00416.54
8.0.30.0150.00016.96
8.0.20.0100.00817.40
8.0.10.0000.00716.77
8.0.00.0110.00716.67
7.4.330.0040.00015.08
7.4.320.0070.00016.47
7.4.300.0030.00316.43
7.4.290.0050.00516.37
7.4.280.0040.00416.49
7.4.270.0030.00316.35
7.4.260.0080.00016.30
7.4.250.0000.00816.40
7.4.240.0040.00416.50
7.4.230.0000.00716.36
7.4.220.0110.00716.37
7.4.210.0060.00816.46
7.4.200.0030.00316.36
7.4.160.0090.01316.34
7.4.150.0110.00817.40
7.4.140.0080.01017.86
7.4.130.0090.01016.51
7.4.120.0080.01216.30
7.4.110.0060.01116.34
7.4.100.0070.01016.43
7.4.90.0080.00916.45
7.4.80.0090.00919.39
7.4.70.0070.01116.42
7.4.60.0090.00616.33
7.4.50.0050.00816.31
7.4.40.0090.00716.29
7.4.30.0000.01616.37
7.4.00.0040.01114.89
7.3.330.0030.00313.11
7.3.320.0000.00513.06
7.3.310.0040.00416.27
7.3.300.0070.00016.05
7.3.290.0070.00016.16
7.3.280.0120.00816.12
7.3.270.0080.01117.40
7.3.260.0080.01116.47
7.3.250.0150.00616.26
7.3.240.0120.00716.22
7.3.230.0070.01016.39
7.3.210.0140.00316.35
7.3.200.0110.00719.39
7.3.190.0070.00816.18
7.3.180.0040.01516.41
7.3.170.0100.00716.20
7.3.160.0030.01716.31
7.2.330.0100.00716.27
7.2.320.0100.01216.55
7.2.310.0070.01016.31
7.2.300.0090.00916.54
7.2.290.0040.01116.45
7.2.00.0060.00919.28
7.1.100.0100.00318.25
7.1.70.0070.00417.00
7.1.60.0100.01319.27
7.1.00.0030.07722.40
7.0.200.0030.00716.66
7.0.60.0370.07020.01
7.0.50.0100.06720.43
7.0.40.0230.05720.32
7.0.30.0370.05020.29
7.0.20.0300.05320.31
7.0.10.0200.05720.38
7.0.00.0130.05720.33
5.6.280.0100.06320.92
5.6.210.0100.06320.71
5.6.200.0100.06021.18
5.6.190.0230.06321.08
5.6.180.0230.06020.89
5.6.170.0330.04721.09
5.6.160.0170.05721.06
5.6.150.0130.05721.14
5.6.140.0230.04721.03
5.6.130.0130.05721.04
5.6.120.0230.05721.11
5.6.110.0300.05321.07
5.6.100.0270.05721.16
5.6.90.0200.05721.11
5.6.80.0200.05320.45
5.6.70.0300.04320.50
5.6.60.0230.05020.46
5.6.50.0300.04320.52
5.6.40.0170.06020.29
5.6.30.0170.05720.39
5.6.20.0130.05720.50
5.6.10.0130.05020.45
5.6.00.0230.04320.43
5.5.350.2430.03320.42
5.5.340.0170.05020.87
5.5.330.0200.06020.82
5.5.320.0200.05320.87
5.5.310.0300.05020.84
5.5.300.0130.05720.68
5.5.290.0130.06020.84
5.5.280.0230.05321.02
5.5.270.0300.05320.96
5.5.260.0170.08020.84
5.5.250.0270.05020.68
5.5.240.0170.06020.21
5.5.230.0230.05320.28
5.5.220.0130.06020.22
5.5.210.0300.04320.21
5.5.200.0100.06320.34
5.5.190.0070.06320.03
5.5.180.0070.06320.32
5.5.160.0130.05320.32
5.5.150.0200.05020.13
5.5.140.0100.05320.22
5.5.130.0200.04720.22
5.5.120.0100.05720.18
5.5.110.0100.05720.18
5.5.100.0130.05720.17
5.5.90.0170.05019.93
5.5.80.0200.05020.14
5.5.70.0130.06020.01
5.5.60.0230.04019.98
5.5.50.0130.05320.01
5.5.40.0130.05320.16
5.5.30.0100.06020.09
5.5.20.0230.04720.09
5.5.10.0200.05020.09
5.5.00.0100.06020.10

preferences:
45.89 ms | 401 KiB | 5 Q