3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'Good luck!'; var_dump(substring($string, 10));

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)
8.3.70.0090.00918.43
8.3.60.0130.01016.63
8.3.50.0080.01316.74
8.3.40.0150.00018.84
8.3.30.0070.00718.85
8.3.20.0040.00420.90
8.3.10.0070.00021.65
8.3.00.0080.00019.47
8.2.180.0140.00716.50
8.2.170.0100.00722.96
8.2.160.0100.00320.18
8.2.150.0040.00425.66
8.2.140.0000.00824.66
8.2.130.0070.00020.57
8.2.120.0000.00826.35
8.2.110.0030.00620.52
8.2.100.0120.00017.72
8.2.90.0080.00019.26
8.2.80.0000.00818.05
8.2.70.0080.00017.25
8.2.60.0090.00017.80
8.2.50.0000.00818.10
8.2.40.0000.00822.27
8.2.30.0070.00021.05
8.2.20.0000.00817.91
8.2.10.0040.00418.06
8.2.00.0000.00717.93
8.1.280.0070.01525.92
8.1.270.0040.00423.96
8.1.260.0000.00726.35
8.1.250.0100.00328.09
8.1.240.0030.00620.76
8.1.230.0120.00019.05
8.1.220.0040.00417.76
8.1.210.0080.00018.77
8.1.200.0030.01017.23
8.1.190.0090.00017.10
8.1.180.0070.00018.10
8.1.170.0040.00418.59
8.1.160.0070.00018.89
8.1.150.0050.00220.56
8.1.140.0030.01019.42
8.1.130.0000.00718.83
8.1.120.0040.00417.34
8.1.110.0000.00717.30
8.1.100.0040.00417.37
8.1.90.0040.00417.41
8.1.80.0060.00317.45
8.1.70.0040.00417.32
8.1.60.0090.00017.51
8.1.50.0070.00017.46
8.1.40.0040.00417.57
8.1.30.0040.00417.54
8.1.20.0000.00817.65
8.1.10.0000.00717.59
8.1.00.0070.00017.50
8.0.300.0040.00418.77
8.0.290.0090.00016.75
8.0.280.0000.00718.38
8.0.270.0080.00017.11
8.0.260.0000.00616.72
8.0.250.0030.00316.94
8.0.240.0000.00717.00
8.0.230.0000.00716.89
8.0.220.0000.00716.79
8.0.210.0030.00616.83
8.0.200.0030.00516.89
8.0.190.0060.00316.87
8.0.180.0050.00316.80
8.0.170.0040.00416.81
8.0.160.0080.00016.99
8.0.150.0030.00416.86
8.0.140.0080.00016.78
8.0.130.0000.00513.38
8.0.120.0030.00516.71
8.0.110.0070.00016.82
8.0.100.0000.00716.74
8.0.90.0070.00016.88
8.0.80.0050.01016.90
8.0.70.0040.00416.89
8.0.60.0040.00417.01
8.0.50.0040.00416.86
8.0.30.0110.00817.21
8.0.20.0100.01017.40
8.0.10.0000.00717.05
8.0.00.0120.00616.56
7.4.330.0000.00415.55
7.4.320.0060.00016.50
7.4.300.0000.00616.48
7.4.290.0070.00016.45
7.4.280.0070.00016.40
7.4.270.0040.00716.53
7.4.260.0030.00313.24
7.4.250.0000.00816.49
7.4.240.0080.00016.52
7.4.230.0000.00716.61
7.4.220.0080.01516.62
7.4.210.0100.01016.54
7.4.200.0000.00716.57
7.4.150.0090.00917.40
7.4.140.0140.00517.86
7.4.130.0120.00916.47
7.4.120.0100.01116.60
7.4.110.0120.00616.64
7.4.100.0100.00716.68
7.4.90.0040.01216.61
7.4.80.0090.01219.39
7.4.70.0070.01016.62
7.4.60.0080.00816.38
7.4.50.0040.00816.20
7.4.40.0070.01016.45
7.4.30.0140.00316.39
7.4.00.0050.01414.95
7.3.330.0030.00313.16
7.3.320.0030.00313.11
7.3.310.0000.00916.11
7.3.300.0070.00016.17
7.3.290.0090.00616.28
7.3.280.0080.00816.26
7.3.270.0110.00717.40
7.3.260.0110.00716.34
7.3.250.0120.00616.32
7.3.240.0090.01416.49
7.3.230.0070.01016.60
7.3.210.0060.01016.49
7.3.200.0090.00616.30
7.3.190.0140.00716.50
7.3.180.0100.00716.37
7.3.170.0090.00616.31
7.3.160.0060.01016.29
7.3.120.0050.01214.78
7.3.110.0080.00814.71
7.3.100.0070.00814.81
7.3.90.0050.01114.82
7.3.80.0030.00914.70
7.3.70.0070.00514.73
7.3.60.0030.01214.61
7.3.50.0050.00714.67
7.3.40.0060.00914.68
7.3.30.0040.00614.75
7.3.20.0030.01116.57
7.3.10.0070.00816.63
7.3.00.0060.00716.63
7.2.330.0100.01016.40
7.2.320.0100.00616.68
7.2.310.0040.01216.68
7.2.300.0100.00616.43
7.2.290.0080.00916.65
7.2.250.0130.00314.69
7.2.240.0050.01114.73
7.2.230.0090.00914.85
7.2.220.0080.00514.79
7.2.210.0030.01014.88
7.2.200.0070.00514.82
7.2.190.0060.00614.72
7.2.180.0070.00714.61
7.2.170.0050.00814.70
7.2.160.0040.01114.86
7.2.150.0030.00716.52
7.2.140.0120.00316.73
7.2.130.0060.00616.74
7.2.120.0080.00316.52
7.2.110.0030.01016.54
7.2.100.0030.01216.46
7.2.90.0090.01215.49
7.2.80.0100.00715.49
7.2.70.0300.00815.78
7.2.60.0090.00715.85
7.2.50.0630.00515.75
7.2.40.0900.01215.76
7.2.30.0840.00315.90
7.2.20.0880.01115.62
7.2.10.0580.00815.75
7.2.00.0570.00615.57
7.1.330.0040.01215.52
7.1.320.0050.00515.68
7.1.310.0050.00915.54
7.1.300.0110.00615.67
7.1.290.0040.00915.61
7.1.280.0110.00115.56
7.1.270.0050.00915.51
7.1.260.0040.00915.58
7.1.250.0000.01115.38
7.1.210.0140.00013.43
7.1.200.0460.00713.63
7.1.190.0060.01213.59
7.1.180.0110.00713.71
7.1.170.0400.00713.68
7.1.160.1480.01013.66
7.1.150.1060.01013.73
7.1.140.1370.00313.70
7.1.130.1060.00713.75
7.1.120.1030.00313.40
7.1.110.1100.00713.39
7.1.100.2040.00613.71
7.1.90.1150.00313.53
7.1.80.0030.01313.79
7.1.70.0960.00713.86
7.1.60.1530.00731.49
7.1.50.0700.01031.90
7.1.40.2090.00632.00
7.1.30.0760.01331.73
7.1.20.0390.01031.57
7.1.10.0070.01013.66
7.1.00.1630.01013.75
7.0.310.0070.01313.20
7.0.300.1500.00612.81
7.0.290.1410.00313.42
7.0.280.1820.00313.49
7.0.270.0990.00713.21
7.0.260.1600.00713.61
7.0.250.1820.00313.57
7.0.240.0480.00713.42
7.0.230.0090.00913.45
7.0.220.0510.01113.54
7.0.210.2100.01013.38
7.0.200.0160.00313.25
7.0.190.0130.00613.32
7.0.180.0240.00513.44
7.0.170.0110.01113.40
7.0.160.0150.00513.39
7.0.150.0130.00713.58
7.0.140.2150.00313.25
7.0.130.1960.01313.48
7.0.120.2200.00713.41
7.0.110.0130.00713.59
7.0.100.0120.00313.40
7.0.90.0270.01013.38
7.0.80.0430.01313.53
7.0.70.0630.00713.46
7.0.60.0110.01113.33
7.0.50.0170.01113.63
7.0.40.1620.01013.67
7.0.30.1320.01013.50
7.0.20.1540.00613.35
7.0.10.0810.00713.31
7.0.00.1460.01413.34

preferences:
55.99 ms | 401 KiB | 5 Q