3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr("hello", 2, null));

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)
8.3.70.0060.01016.38
8.3.60.0130.00616.63
8.3.50.0150.00618.18
8.3.40.0140.00718.58
8.3.30.0110.00318.33
8.3.20.0040.00419.08
8.3.10.0000.00821.52
8.3.00.0050.00322.45
8.2.180.0100.00718.04
8.2.170.0150.00018.67
8.2.160.0100.01022.96
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00721.12
8.2.120.0070.00026.35
8.2.110.0100.00719.18
8.2.100.0120.00017.66
8.2.90.0050.00220.59
8.2.80.0000.00817.97
8.2.70.0050.00317.68
8.2.60.0000.00717.91
8.2.50.0040.00418.10
8.2.40.0050.00318.97
8.2.30.0050.00219.38
8.2.20.0040.00417.82
8.2.10.0040.00417.84
8.2.00.0070.00019.00
8.1.280.0090.00625.92
8.1.270.0000.00823.96
8.1.260.0050.00226.35
8.1.250.0100.00328.09
8.1.240.0060.00319.03
8.1.230.0060.00620.99
8.1.220.0040.00417.74
8.1.210.0030.00619.13
8.1.200.0060.00317.23
8.1.190.0040.00417.00
8.1.180.0080.00018.10
8.1.170.0030.00518.57
8.1.160.0040.00418.64
8.1.150.0030.00718.87
8.1.140.0070.00017.57
8.1.130.0040.00418.83
8.1.120.0030.00317.23
8.1.110.0000.00717.36
8.1.100.0030.00517.37
8.1.90.0070.00017.33
8.1.80.0070.00017.25
8.1.70.0030.00617.25
8.1.60.0030.00817.43
8.1.50.0040.00417.27
8.1.40.0050.00217.41
8.1.30.0000.00717.55
8.1.20.0000.00717.42
8.1.10.0000.00717.42
8.1.00.0000.00817.21
8.0.300.0050.00219.78
8.0.290.0070.00016.63
8.0.280.0000.00718.37
8.0.270.0070.00017.13
8.0.260.0050.00517.18
8.0.250.0050.00216.82
8.0.240.0050.00316.77
8.0.230.0070.00316.87
8.0.220.0040.00416.70
8.0.210.0040.00416.69
8.0.200.0030.00316.67
8.0.190.0000.00716.85
8.0.180.0000.00716.80
8.0.170.0040.00416.71
8.0.160.0030.00316.75
8.0.150.0040.00416.70
8.0.140.0000.00716.73
8.0.130.0030.00313.17
8.0.120.0000.00716.61
8.0.110.0050.00216.59
8.0.100.0000.00716.76
8.0.90.0040.00416.66
8.0.80.0150.00616.74
8.0.70.0070.00016.55
8.0.60.0040.00416.78
8.0.50.0030.00516.73
8.0.30.0130.00716.87
8.0.20.0080.01117.40
8.0.10.0000.00816.71
8.0.00.0080.01216.57
7.4.330.0020.00216.77
7.4.320.0060.00016.46
7.4.300.0060.00016.29
7.4.290.0030.00316.35
7.4.280.0050.00316.41
7.4.270.0030.00316.32
7.4.260.0030.00316.50
7.4.250.0040.00416.29
7.4.240.0030.00316.34
7.4.230.0000.00716.54
7.4.220.0000.00716.47
7.4.210.0090.00516.49
7.4.200.0040.00416.53
7.4.160.0130.00416.40
7.4.140.0090.01017.86
7.4.130.0070.01016.30
7.4.120.0110.00716.31
7.4.110.0140.00316.37
7.4.100.0090.00916.28
7.4.90.0040.01816.30
7.4.80.0110.00819.39
7.4.70.0030.01316.38
7.4.60.0120.00416.27
7.4.50.0130.00316.41
7.4.40.0200.00316.56
7.4.00.0000.01514.41
7.3.330.0030.00312.88
7.3.320.0030.00312.97
7.3.310.0070.00016.14
7.3.300.0050.00216.18
7.3.290.0000.00716.15
7.3.280.0050.01016.08
7.3.260.0120.00616.23
7.3.240.0060.01116.34
7.3.230.0080.00916.38
7.3.210.0060.01016.34
7.3.200.0100.00716.13
7.3.190.0130.00316.30
7.3.180.0080.00816.20
7.3.170.0140.00416.24
7.3.160.0060.00916.08
7.2.330.0100.00716.20
7.2.320.0060.01616.47
7.2.310.0110.00716.30
7.2.300.0060.01216.50
7.2.290.0060.01516.56
7.2.80.0070.00316.38
7.2.60.0090.00616.80
7.2.40.1810.01217.73
7.2.30.1830.00917.59
7.2.20.1520.00617.41
7.2.10.1990.00717.58
7.2.00.1900.00917.61
7.1.200.0040.00715.70
7.1.160.2300.00716.43
7.1.150.1810.01016.37
7.1.140.1940.01116.80
7.1.130.2030.01316.75
7.1.120.1710.00516.53
7.1.110.1330.01016.13
7.1.100.1580.00815.86
7.1.90.2670.01315.89
7.1.80.2110.00815.79
7.1.70.2300.00715.34
7.1.60.2050.01233.31
7.1.50.2720.01232.77
7.1.40.2950.01932.58
7.1.30.2950.01232.38
7.1.20.3550.01332.58
7.1.10.2500.00814.50
7.1.00.2050.00714.64

preferences:
63.67 ms | 400 KiB | 5 Q