3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str="ABCDEFG"; echo substr($str, 0, 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)
8.3.60.0040.01118.31
8.3.50.0060.00918.05
8.3.40.0060.00918.67
8.3.30.0100.00718.64
8.3.20.0070.00021.88
8.3.10.0060.00323.61
8.3.00.0080.00419.13
8.2.180.0100.01018.41
8.2.170.0090.00622.96
8.2.160.0070.01021.96
8.2.150.0060.00324.18
8.2.140.0080.00024.66
8.2.130.0050.00319.76
8.2.120.0040.00426.35
8.2.110.0090.00022.25
8.2.100.0030.00917.91
8.2.90.0080.00017.75
8.2.80.0090.00517.97
8.2.70.0000.00817.68
8.2.60.0040.00418.22
8.2.50.0040.00418.10
8.2.40.0060.00320.34
8.2.30.0020.00519.25
8.2.20.0020.00518.07
8.2.10.0040.00418.06
8.2.00.0020.00517.57
8.1.280.0110.00425.92
8.1.270.0080.00020.29
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0040.00420.77
8.1.230.0040.00717.83
8.1.220.0030.00517.76
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0060.00317.10
8.1.180.0040.00418.10
8.1.170.0060.00320.16
8.1.160.0000.00818.77
8.1.150.0030.00320.13
8.1.140.0080.00019.38
8.1.130.0030.00319.00
8.1.120.0040.00417.36
8.1.110.0000.00817.29
8.1.100.0070.00017.38
8.1.90.0000.00717.39
8.1.80.0000.00717.30
8.1.70.0030.00317.36
8.1.60.0040.00417.53
8.1.50.0000.00817.46
8.1.40.0040.00417.45
8.1.30.0060.00317.42
8.1.20.0000.00717.47
8.1.10.0040.00417.47
8.1.00.0000.00817.45
8.0.300.0000.00818.77
8.0.290.0060.00316.75
8.0.280.0000.00718.50
8.0.270.0040.00417.25
8.0.260.0000.00617.22
8.0.250.0030.00316.94
8.0.240.0000.00816.93
8.0.230.0040.00416.88
8.0.220.0000.00716.79
8.0.210.0000.00716.72
8.0.200.0060.00316.86
8.0.190.0000.00716.86
8.0.180.0000.00716.86
8.0.170.0040.00416.90
8.0.160.0070.00016.80
8.0.150.0000.00716.90
8.0.140.0050.00316.79
8.0.130.0000.00513.19
8.0.120.0070.00016.69
8.0.110.0040.00416.82
8.0.100.0000.00916.86
8.0.90.0050.00216.84
8.0.80.0110.00616.80
8.0.70.0040.00416.83
8.0.60.0040.00416.70
8.0.50.0060.00316.91
8.0.30.0080.00917.10
8.0.20.0120.00617.40
8.0.10.0040.00416.99
8.0.00.0060.01216.80
7.4.330.0000.00415.55
7.4.320.0060.00016.55
7.4.300.0000.00716.55
7.4.290.0030.00616.41
7.4.280.0070.00016.43
7.4.270.0030.00316.42
7.4.260.0060.00316.29
7.4.250.0000.00716.51
7.4.240.0030.00316.58
7.4.230.0000.00716.46
7.4.220.0060.01216.63
7.4.210.0100.00616.53
7.4.200.0040.00416.36
7.4.160.0070.00916.51
7.4.150.0140.00317.40
7.4.140.0100.00917.86
7.4.130.0080.00916.54
7.4.120.0130.00716.50
7.4.110.0060.01016.56
7.4.100.0060.01216.55
7.4.90.0140.00316.34
7.4.80.0040.01819.39
7.4.70.0130.00416.32
7.4.60.0110.00516.38
7.4.50.0080.00816.18
7.4.40.0040.01116.57
7.4.30.0070.00916.58
7.4.00.0120.00014.91
7.3.330.0060.00013.08
7.3.320.0000.00512.98
7.3.310.0000.00716.20
7.3.300.0020.00516.16
7.3.290.0000.00616.04
7.3.280.0080.01016.13
7.3.270.0080.00817.40
7.3.260.0110.01116.38
7.3.250.0060.01216.29
7.3.240.0070.01216.38
7.3.230.0130.00616.21
7.3.210.0090.00616.43
7.3.200.0110.01119.39
7.3.190.0070.01016.38
7.3.180.0130.00316.18
7.3.170.0130.01016.23
7.3.160.0130.00916.22
7.3.10.0040.00716.55
7.3.00.0080.00016.57
7.2.330.0090.00916.25
7.2.320.0070.01016.44
7.2.310.0080.00816.47
7.2.300.0060.01616.69
7.2.290.0130.00316.35
7.2.130.0090.00316.88
7.2.120.0000.01316.73
7.2.110.0000.01216.61
7.2.100.0000.01216.54
7.2.90.0070.01316.95
7.2.80.0000.01016.57
7.2.70.0070.00716.73
7.2.60.0060.00716.73
7.2.50.0130.00316.65
7.2.40.0080.00416.90
7.2.30.0030.00916.88
7.2.20.0000.00916.77
7.2.10.0060.00616.78
7.2.00.0030.00616.71
7.1.250.0030.00915.72
7.1.200.0110.01115.33
7.1.70.0050.00517.12
7.1.60.0060.00617.28
7.1.10.0130.05322.27
7.1.00.0100.05722.66
7.0.200.0090.00916.88
7.0.140.0170.04722.10
7.0.130.0070.05321.94
7.0.120.0070.05721.97
7.0.110.0130.06722.15
7.0.100.0000.07322.02
7.0.90.0130.07722.19
7.0.80.0070.05722.01
7.0.70.0030.06022.15
7.0.60.0130.05322.04
7.0.50.0130.05022.13
7.0.40.0100.05722.15
7.0.30.0100.05322.03
7.0.20.0100.06022.19
7.0.10.0130.06721.98
7.0.00.0130.06722.02

preferences:
63.56 ms | 400 KiB | 5 Q