3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(iconv_substr('',0,10,'utf-8'));

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)
8.3.70.0190.00318.18
8.3.60.0040.01218.27
8.3.50.0110.00422.05
8.3.40.0080.00818.63
8.3.30.0070.00718.68
8.3.20.0090.00020.34
8.3.10.0050.00321.84
8.3.00.0040.00420.90
8.2.180.0120.00916.38
8.2.170.0070.01022.96
8.2.160.0130.00318.86
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0020.00520.32
8.2.120.0040.00426.35
8.2.110.0090.00021.89
8.2.100.0080.00419.14
8.2.90.0000.00817.63
8.2.80.0080.00018.70
8.2.70.0040.00417.68
8.2.60.0040.00418.03
8.2.50.0040.00419.38
8.2.40.0080.00021.02
8.2.30.0070.00019.03
8.2.20.0000.00817.55
8.2.10.0000.00717.93
8.2.00.0070.00017.93
8.1.280.0070.00725.92
8.1.270.0040.00423.79
8.1.260.0040.00428.09
8.1.250.0040.00428.09
8.1.240.0090.00023.83
8.1.230.0040.00720.97
8.1.220.0000.00917.74
8.1.210.0000.00918.77
8.1.200.0060.00317.00
8.1.190.0030.00517.10
8.1.180.0000.00718.64
8.1.170.0030.00618.39
8.1.160.0000.01118.86
8.1.150.0040.00418.66
8.1.140.0040.00419.48
8.1.130.0000.00717.50
8.1.120.0000.00717.21
8.1.110.0080.00017.37
8.1.100.0070.00017.37
8.1.90.0030.00617.32
8.1.80.0000.00717.32
8.1.70.0000.00717.30
8.1.60.0040.00417.45
8.1.50.0040.00417.26
8.1.40.0050.00317.30
8.1.30.0040.00417.59
8.1.20.0040.00417.43
8.1.10.0040.00417.45
8.1.00.0000.00817.33
8.0.300.0040.00418.77
8.0.290.0050.00216.58
8.0.280.0030.00318.27
8.0.270.0080.00017.12
8.0.260.0040.00717.06
8.0.250.0070.00016.73
8.0.240.0030.00316.80
8.0.230.0030.00316.69
8.0.220.0000.00716.79
8.0.210.0030.00316.82
8.0.200.0060.00016.71
8.0.190.0000.00716.69
8.0.180.0000.00716.82
8.0.170.0000.00916.68
8.0.160.0030.00416.82
8.0.150.0040.00416.66
8.0.140.0000.00716.74
8.0.130.0050.00013.41
8.0.120.0060.00316.91
8.0.110.0060.00316.76
8.0.100.0060.00316.76
8.0.90.0080.00016.88
8.0.80.0070.01716.91
8.0.70.0050.00516.93
8.0.60.0040.00416.95
8.0.50.0000.00916.73
8.0.30.0120.00717.00
8.0.20.0160.00717.41
8.0.10.0060.00316.87
8.0.00.0130.00616.89
7.4.330.0040.00015.08
7.4.320.0030.00316.44
7.4.300.0000.00616.35
7.4.290.0040.00416.44
7.4.280.0030.00516.48
7.4.270.0030.00316.27
7.4.260.0070.00016.24
7.4.250.0030.00516.47
7.4.240.0040.00416.60
7.4.230.0030.00616.39
7.4.220.0110.01216.49
7.4.210.0100.01016.49
7.4.200.0040.00416.45
7.4.160.0170.01016.54
7.4.150.0060.01417.40
7.4.140.0130.00717.86
7.4.130.0100.01016.49
7.4.120.0090.01116.51
7.4.110.0060.01216.38
7.4.100.0060.01316.38
7.4.90.0130.00716.43
7.4.80.0080.01619.39
7.4.70.0030.01616.41
7.4.60.0000.01816.46
7.4.50.0070.01016.56
7.4.40.0040.01416.36
7.4.30.0090.00916.33
7.4.00.0030.00615.12
7.3.330.0030.00313.16
7.3.320.0000.00513.10
7.3.310.0000.00816.27
7.3.300.0040.00416.29
7.3.290.0050.01116.25
7.3.280.0070.01216.31
7.3.270.0120.01217.40
7.3.260.0100.00816.20
7.3.250.0140.01016.33
7.3.240.0130.00916.38
7.3.230.0150.00616.39
7.3.210.0060.01316.52
7.3.200.0040.01516.32
7.3.190.0090.01316.51
7.3.180.0040.01516.46
7.3.170.0140.00616.57
7.3.160.0060.01316.55
7.2.330.0070.01316.56
7.2.320.0070.01116.54
7.2.310.0090.00916.75
7.2.300.0030.01416.29
7.2.290.0100.01016.36
7.2.60.0070.01016.82
7.2.00.0080.01519.04
7.1.200.0030.01015.49
7.1.100.0000.02018.31
7.1.70.0050.00516.79
7.1.60.0100.00719.90
7.1.50.0030.02116.68
7.1.00.0070.07722.61
7.0.200.0040.00914.82
7.0.70.0930.07319.90
7.0.60.0900.06319.99
7.0.50.1070.06020.43
7.0.40.1200.05320.46
7.0.30.0970.06020.43
7.0.20.0800.07020.45
7.0.10.0970.05020.40
7.0.00.1030.07720.51
5.6.280.0000.08020.93
5.6.220.0930.05320.64
5.6.210.0900.06020.71
5.6.200.0700.07021.18
5.6.190.0800.06721.14
5.6.180.0970.07721.28
5.6.170.0870.06721.17
5.6.160.0800.07021.26
5.6.150.0830.06321.24
5.6.140.0800.06321.24
5.6.130.0830.06021.19
5.6.120.0170.06021.25
5.6.110.0330.07721.13
5.6.100.0900.05321.21
5.6.90.0870.06321.21
5.6.80.0800.06320.49
5.6.70.0800.06020.52
5.6.60.1030.07020.58
5.6.50.0870.05320.52
5.6.40.1030.05720.68
5.6.30.1000.04720.62
5.6.20.0830.07020.50
5.6.10.0830.06020.41
5.6.00.0700.07320.66
5.5.360.0800.07020.33
5.5.350.0830.06320.47
5.5.340.0770.06321.03
5.5.330.0830.05721.02
5.5.320.1070.05321.08
5.5.310.0970.08020.82
5.5.300.0830.06020.90
5.5.290.0830.06320.93
5.5.280.0270.05020.97
5.5.270.0770.07021.05
5.5.260.0870.09321.05
5.5.250.0670.06720.93
5.5.240.0770.06020.43
5.5.230.0870.06020.29
5.5.220.0800.06020.43
5.5.210.0930.04720.29
5.5.200.0830.06720.25
5.5.190.0800.06320.41
5.5.180.1000.05320.39
5.5.160.0900.05320.32
5.5.150.1030.04720.40
5.5.140.0830.06720.38
5.5.130.0900.05320.44
5.5.120.1100.06320.43
5.5.110.0930.06020.39
5.5.100.0830.05320.25
5.5.90.1030.06720.12
5.5.80.0870.06320.21
5.5.70.0870.05320.25
5.5.60.1030.06720.11
5.5.50.0970.08320.32
5.5.40.0830.05320.15
5.5.30.0870.07020.23
5.5.20.0900.06720.11
5.5.10.0930.06320.21
5.5.00.0970.05320.13

preferences:
64.87 ms | 401 KiB | 5 Q