3v4l.org

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

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)
8.3.60.0160.00018.30
8.3.50.0070.00716.60
8.3.40.0120.00318.96
8.3.30.0080.00818.75
8.3.20.0050.00324.18
8.3.10.0030.00524.66
8.3.00.0070.00026.16
8.2.180.0170.00325.92
8.2.170.0110.00418.74
8.2.160.0100.00322.96
8.2.150.0070.00025.66
8.2.140.0090.00024.66
8.2.130.0000.00726.16
8.2.120.0070.00021.05
8.2.110.0030.00619.30
8.2.100.0040.00817.72
8.2.90.0050.00318.04
8.2.80.0080.00019.17
8.2.70.0030.00717.80
8.2.60.0030.00618.03
8.2.50.0050.00318.10
8.2.40.0080.00019.26
8.2.30.0050.00319.06
8.2.20.0000.00718.06
8.2.10.0030.00619.11
8.2.00.0050.00219.15
8.1.280.0130.00925.92
8.1.270.0040.00423.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00622.10
8.1.230.0090.00322.68
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0060.00317.13
8.1.190.0040.00417.22
8.1.180.0040.00418.10
8.1.170.0040.00418.45
8.1.160.0040.00318.84
8.1.150.0070.00018.68
8.1.140.0040.00418.76
8.1.130.0030.00320.01
8.1.120.0030.00817.26
8.1.110.0080.00017.34
8.1.100.0000.00817.38
8.1.90.0030.00317.21
8.1.80.0000.00817.27
8.1.70.0040.00417.32
8.1.60.0040.00417.34
8.1.50.0040.00417.35
8.1.40.0030.00517.42
8.1.30.0060.00317.59
8.1.20.0050.00317.59
8.1.10.0000.00817.39
8.1.00.0000.00817.39
8.0.300.0000.00720.10
8.0.290.0000.00716.63
8.0.280.0030.00518.38
8.0.270.0000.00716.73
8.0.260.0000.00618.30
8.0.250.0000.00616.94
8.0.240.0000.00716.98
8.0.230.0050.00216.96
8.0.220.0000.00716.89
8.0.210.0030.00316.89
8.0.200.0070.00016.97
8.0.190.0040.00416.98
8.0.180.0050.00216.83
8.0.170.0040.00416.77
8.0.160.0040.00416.90
8.0.150.0050.00316.82
8.0.140.0000.00816.84
8.0.130.0050.00013.23
8.0.120.0000.00816.85
8.0.110.0040.00416.96
8.0.100.0030.00516.76
8.0.90.0000.00816.77
8.0.80.0080.01016.85
8.0.70.0040.00416.95
8.0.60.0000.00716.92
8.0.50.0000.00716.80
8.0.30.0140.00316.91
8.0.20.0140.00516.96
8.0.10.0000.00716.89
8.0.00.0120.01216.68
7.4.330.0000.00515.55
7.4.320.0060.00016.33
7.4.300.0060.00016.47
7.4.290.0030.00316.38
7.4.280.0030.00616.43
7.4.270.0000.00716.46
7.4.260.0000.00513.18
7.4.250.0000.00716.44
7.4.240.0030.00516.52
7.4.230.0070.00016.50
7.4.220.0020.00516.39
7.4.210.0080.00816.42
7.4.200.0070.00016.48
7.4.130.0090.00916.32
7.4.120.0030.01616.33
7.4.110.0110.00616.45
7.4.100.0090.01216.23
7.4.90.0110.00716.32
7.4.80.0080.00816.04
7.4.70.0070.01016.40
7.4.60.0060.01316.25
7.4.50.0070.01316.51
7.4.40.0120.00416.40
7.4.30.0110.00616.37
7.4.20.0090.00616.10
7.4.10.0100.00716.41
7.4.00.0090.00816.31
7.3.330.0100.00016.16
7.3.320.0000.00513.07
7.3.310.0040.00416.06
7.3.300.0040.00416.11
7.3.290.0090.00616.17
7.3.280.0090.00916.15
7.3.260.0070.01016.50
7.3.240.0130.00516.22
7.3.230.0060.01016.15
7.3.210.0090.00916.43
7.3.200.0030.01316.22
7.3.190.0110.01116.42
7.3.180.0170.00616.22
7.3.170.0130.00316.22
7.3.160.0080.00816.50
7.3.150.0070.01016.18
7.3.140.0080.00816.12
7.3.130.0030.01316.20
7.3.120.0070.01016.29
7.3.110.0070.01016.16
7.3.100.0080.00816.35
7.3.90.0100.00716.07
7.3.80.0090.00916.14
7.3.70.0120.00616.05
7.3.60.0030.01316.29
7.3.50.0060.00916.12
7.3.40.0130.00615.92
7.3.30.0080.00815.96
7.3.20.0070.01016.16
7.3.10.0080.00816.20
7.3.00.0120.00415.95
7.2.330.0130.00516.29
7.2.320.0060.00916.24
7.2.310.0100.01016.31
7.2.300.0080.00816.30
7.2.290.0100.00516.32
7.2.280.0030.01316.35
7.2.270.0040.01416.09
7.2.260.0130.00316.45
7.2.250.0030.01316.45
7.2.240.0100.00716.34
7.2.230.0060.01016.32
7.2.220.0160.00716.29
7.2.210.0030.01316.11
7.2.200.0030.01416.36
7.2.190.0060.00916.16
7.2.180.0120.00416.21
7.2.170.0090.00616.33
7.2.160.0100.00616.10
7.2.150.1040.00916.36
7.2.140.0090.00916.20
7.2.130.0030.01316.12
7.2.120.0080.00816.14
7.2.110.0150.00316.08
7.2.100.0030.01316.32
7.2.90.0030.01316.28
7.2.80.0040.01216.13
7.2.70.0080.00816.13
7.2.60.0090.01116.36
7.2.50.0120.00616.11
7.2.40.0180.00016.40
7.2.30.0120.00616.25
7.2.20.0110.00616.20
7.2.10.0080.00816.30
7.2.00.0030.01416.32

preferences:
70.82 ms | 401 KiB | 5 Q