3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr("abcdef", 4, -4));

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)
8.3.60.0030.01418.38
8.3.50.0140.00016.11
8.3.40.0090.00618.38
8.3.30.0110.00318.58
8.3.20.0040.00421.82
8.3.10.0070.00020.21
8.3.00.0040.00420.52
8.2.180.0110.00716.32
8.2.170.0110.00422.96
8.2.160.0040.01220.39
8.2.150.0030.00624.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0120.00318.64
8.2.110.0040.00419.27
8.2.100.0090.00317.59
8.2.90.0060.00317.50
8.2.80.0080.00018.66
8.2.70.0030.00617.50
8.2.60.0040.00417.68
8.2.50.0040.00718.07
8.2.40.0000.00819.84
8.2.30.0000.00717.81
8.2.20.0040.00417.98
8.2.10.0040.00419.01
8.2.00.0000.00719.17
8.1.280.0100.00325.92
8.1.270.0070.00822.76
8.1.260.0030.01026.35
8.1.250.0040.00428.09
8.1.240.0060.00322.04
8.1.230.0060.00620.92
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0040.00417.10
8.1.180.0000.00818.10
8.1.170.0000.00918.50
8.1.160.0000.00818.77
8.1.150.0040.00418.71
8.1.140.0070.00022.14
8.1.130.0000.00717.26
8.1.120.0070.00017.16
8.1.110.0000.00817.33
8.1.100.0040.00417.25
8.1.90.0040.00417.23
8.1.80.0000.00817.16
8.1.70.0070.00017.26
8.1.60.0010.00617.37
8.1.50.0030.00517.28
8.1.40.0030.00517.37
8.1.30.0030.00517.47
8.1.20.0080.00017.51
8.1.10.0050.00617.29
8.1.00.0100.00517.27
8.0.300.0050.00718.77
8.0.290.0050.00316.58
8.0.280.0040.00420.11
8.0.270.0030.00317.77
8.0.260.0030.00316.68
8.0.250.0000.00716.73
8.0.240.0030.00816.83
8.0.230.0000.00816.85
8.0.220.0030.00316.75
8.0.210.0000.00716.78
8.0.200.0070.00016.86
8.0.190.0050.00316.70
8.0.180.0000.00816.69
8.0.170.0080.00016.67
8.0.160.0060.00616.73
8.0.150.0040.00416.71
8.0.140.0030.00416.70
8.0.130.0100.00314.94
8.0.120.0120.00316.71
8.0.110.0100.00416.76
8.0.100.0090.00316.70
8.0.90.0100.00216.68
8.0.80.0090.00616.79
8.0.70.0090.00616.74
8.0.60.0080.00616.67
8.0.50.0070.01016.64
8.0.30.0090.00816.75
8.0.20.0090.00716.74
8.0.10.0090.00716.81
8.0.00.0070.00716.72
7.4.330.0000.00516.84
7.4.320.0060.00016.37
7.4.300.0000.00616.45
7.4.290.0030.00716.30
7.4.280.0050.00316.35
7.4.270.0090.00616.38
7.4.260.0120.00214.79
7.4.250.0110.00516.40
7.4.240.0070.00616.33
7.4.230.0060.00716.31
7.4.220.0080.00316.47
7.4.210.0070.00716.35
7.4.200.0050.00816.47
7.4.190.0080.00616.41
7.4.180.0100.00416.48
7.4.160.0080.00616.43
7.4.150.0080.00716.37
7.4.140.0070.00916.58
7.4.130.0090.00816.25
7.4.120.0100.00816.29
7.4.110.0100.00816.27
7.4.100.0100.00816.31
7.4.90.0090.01016.25
7.4.80.0070.01016.63
7.4.70.0100.00816.26
7.4.60.0080.01016.29
7.4.50.0080.00916.22
7.4.40.0080.00916.38
7.4.30.0100.00716.25
7.4.20.0110.00716.24
7.4.10.0090.00816.25
7.4.00.0110.00716.05
7.3.330.0070.00716.08
7.3.320.0070.00614.61
7.3.310.0100.00416.03
7.3.300.0060.00616.17
7.3.290.0080.00616.11
7.3.280.0120.00616.14
7.3.270.0090.00616.13
7.3.260.0090.00516.10
7.3.250.0110.00516.08
7.3.240.0090.00816.12
7.3.230.0090.00816.14
7.3.220.0100.00716.10
7.3.210.0070.01016.14
7.3.200.0090.00716.13
7.3.190.0080.00816.09
7.3.180.0100.00716.14
7.3.170.0090.00716.18
7.3.160.0080.00816.13
7.3.150.0090.00616.15
7.3.140.0090.00716.13
7.3.130.0100.00615.99
7.3.120.0100.00715.97
7.3.110.0090.00715.83
7.3.100.0090.00815.90
7.3.90.0090.00816.08
7.3.80.0120.00515.93
7.3.70.0070.00915.93
7.3.60.0090.00716.07
7.3.50.0100.00615.97
7.3.40.0070.00816.00
7.3.30.0090.00716.02
7.3.20.0090.00916.24
7.3.10.0110.00916.11
7.3.00.0080.00916.15
7.2.340.0110.00716.14
7.2.330.0110.00816.23
7.2.320.0120.00716.15
7.2.310.0120.00916.23
7.2.300.0120.00716.19
7.2.290.0090.00916.23
7.2.280.0100.01016.18
7.2.270.0120.00716.19
7.2.260.0120.00816.20
7.2.250.0100.01016.02
7.2.240.0100.00815.98
7.2.230.0080.01016.07
7.2.220.0110.00616.02
7.2.210.0100.00816.05
7.2.200.0080.01016.10
7.2.190.0110.00716.05
7.2.180.0110.00616.09
7.2.170.0110.00716.05
7.2.160.0090.00916.06
7.2.150.0130.00716.37
7.2.140.0130.00616.33
7.2.130.0110.00716.39
7.2.120.0100.00816.42
7.2.110.0100.00916.40
7.2.100.0110.00816.39
7.2.90.0090.01116.29
7.2.80.0120.00816.31
7.2.70.0090.01016.31
7.2.60.0110.00916.30
7.2.50.0120.00816.38
7.2.40.0120.00716.33
7.2.30.0120.01016.40
7.2.20.0120.00916.35
7.2.10.0130.00716.30
7.2.00.0130.00716.37
5.6.230.0030.00315.63

preferences:
66.82 ms | 400 KiB | 5 Q