3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b =123456; $a = substr($b, -1, 3); echo $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)
8.3.60.0140.00316.38
8.3.50.0100.00316.53
8.3.40.0040.01118.70
8.3.30.0110.00418.71
8.3.20.0000.00720.38
8.3.10.0050.00323.65
8.3.00.0040.00419.38
8.2.180.0100.00718.29
8.2.170.0110.00422.96
8.2.160.0100.00320.34
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00421.00
8.2.120.0020.00526.35
8.2.110.0040.00721.06
8.2.100.0080.00317.79
8.2.90.0040.00418.22
8.2.80.0000.00817.97
8.2.70.0090.00017.50
8.2.60.0040.00417.80
8.2.50.0050.00318.10
8.2.40.0050.00220.59
8.2.30.0040.00420.99
8.2.20.0080.00017.98
8.2.10.0040.00418.19
8.2.00.0040.00418.05
8.1.280.0120.00325.92
8.1.270.0040.00423.96
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0080.00420.64
8.1.230.0070.00322.67
8.1.220.0050.00317.78
8.1.210.0050.00318.77
8.1.200.0060.00317.23
8.1.190.0040.00417.23
8.1.180.0000.00818.10
8.1.170.0110.00018.60
8.1.160.0000.00718.91
8.1.150.0000.00820.48
8.1.140.0040.00419.43
8.1.130.0000.00918.84
8.1.120.0000.00717.29
8.1.110.0040.00417.25
8.1.100.0020.00517.45
8.1.90.0100.00017.39
8.1.80.0070.00017.39
8.1.70.0000.00717.23
8.1.60.0030.00517.47
8.1.50.0030.00617.35
8.1.40.0000.00817.36
8.1.30.0030.00517.57
8.1.20.0120.00417.59
8.1.10.0000.00817.43
8.1.00.0040.00417.38
8.0.300.0040.00419.97
8.0.290.0040.00416.75
8.0.280.0070.00018.31
8.0.270.0030.00317.27
8.0.260.0040.00416.80
8.0.250.0000.00716.95
8.0.240.0040.00417.02
8.0.230.0000.00716.86
8.0.220.0000.00716.80
8.0.210.0060.00016.81
8.0.200.0030.00516.75
8.0.190.0030.00616.81
8.0.180.0030.00516.86
8.0.170.0000.00716.87
8.0.160.0040.00416.81
8.0.150.0030.00316.79
8.0.140.0000.00916.80
8.0.130.0000.00613.29
8.0.120.0040.00416.62
8.0.110.0030.00516.69
8.0.100.0050.00216.76
8.0.90.0030.00516.66
8.0.80.0110.00416.80
8.0.70.0040.00416.73
8.0.60.0040.00416.66
8.0.50.0040.00416.86
8.0.30.0130.00517.01
8.0.20.0140.00817.40
8.0.10.0000.00717.00
8.0.00.0130.01016.92
7.4.330.0020.00215.55
7.4.320.0070.00016.53
7.4.300.0030.00316.52
7.4.290.0040.00416.36
7.4.280.0080.00016.46
7.4.270.0030.00316.54
7.4.260.0030.00313.23
7.4.250.0070.00016.40
7.4.240.0050.00216.53
7.4.230.0040.00416.63
7.4.220.0140.00616.57
7.4.210.0080.00816.48
7.4.200.0040.00416.29
7.4.160.0110.00516.40
7.4.150.0110.00617.40
7.4.140.0090.01117.86
7.4.130.0180.00016.30
7.4.120.0140.00716.52
7.4.110.0110.00816.39
7.4.100.0070.01016.48
7.4.90.0070.01016.44
7.4.80.0100.00719.39
7.4.70.0110.00716.46
7.4.60.0040.01216.34
7.4.50.0070.01016.61
7.4.40.0000.01616.35
7.4.30.0130.00316.45
7.4.00.0070.01014.93
7.3.330.0030.00313.13
7.3.320.0000.00612.95
7.3.310.0000.00716.21
7.3.300.0030.00316.21
7.3.290.0050.00816.19
7.3.280.0070.01016.17
7.3.270.0080.01617.40
7.3.260.0090.00816.37
7.3.250.0110.00716.27
7.3.240.0060.01016.21
7.3.230.0100.00716.46
7.3.210.0150.00916.46
7.3.200.0080.00816.34
7.3.190.0030.01716.50
7.3.180.0080.00816.50
7.3.170.0150.00016.28
7.3.160.0070.00916.55
7.3.10.0060.00616.57
7.3.00.0000.01316.50
7.2.330.0120.01216.34
7.2.320.0120.01016.28
7.2.310.0120.00316.55
7.2.300.0000.01616.66
7.2.290.0080.00716.42
7.2.130.0110.00416.54
7.2.120.0070.00716.57
7.2.110.0070.00716.76
7.2.100.0040.01116.45
7.2.90.0100.01016.62
7.2.80.0030.01016.72
7.2.70.0130.00316.68
7.2.60.0050.00916.85
7.2.50.0040.01116.88
7.2.40.0000.01516.88
7.2.30.0060.01016.47
7.2.20.0130.00716.86
7.2.10.0000.01716.52
7.2.00.0100.00316.52
7.1.250.0040.00415.74
7.1.200.0040.01215.54
7.1.70.0030.00816.97
7.1.60.0280.00734.89
7.1.50.0190.01634.79
7.1.40.0130.01334.22
7.1.30.0130.01334.45
7.1.20.0240.00334.44
7.1.10.0070.00716.59
7.1.00.0100.00316.62
7.0.200.0060.00916.63
7.0.190.0040.00816.50
7.0.180.0040.00816.11
7.0.170.0000.01316.18
7.0.160.0000.01216.05
7.0.150.0000.01216.19
7.0.140.0090.00316.31
7.0.130.0000.01216.41
7.0.120.0130.00016.43
7.0.110.0080.00416.16
7.0.100.0030.00916.21
7.0.90.0060.00616.32
7.0.80.0040.00816.46
7.0.70.0060.00616.30
7.0.60.0040.00716.16
7.0.50.0060.00616.24
7.0.40.0030.01116.35
7.0.30.0030.00916.16
7.0.20.0060.00616.34
7.0.10.0090.00316.30
7.0.00.0050.00516.54

preferences:
35.87 ms | 400 KiB | 5 Q