3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr("string", "3")); var_dump(substr("string", "string"));

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)
8.3.60.0040.01116.60
8.3.50.0190.00822.93
8.3.40.0090.00618.71
8.3.30.0140.00018.98
8.3.20.0070.00020.20
8.3.10.0080.00023.65
8.3.00.0060.00319.15
8.2.180.0100.00718.29
8.2.170.0110.00422.96
8.2.160.0140.00020.46
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0040.00420.97
8.2.110.0080.00020.46
8.2.100.0060.00618.09
8.2.90.0040.00419.28
8.2.80.0040.00417.97
8.2.70.0060.00317.46
8.2.60.0040.00417.93
8.2.50.0040.00818.07
8.2.40.0040.00418.22
8.2.30.0050.00217.97
8.2.20.0080.00017.73
8.2.10.0000.00817.98
8.2.00.0040.00417.58
8.1.280.0100.00725.92
8.1.270.0080.00023.82
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00423.96
8.1.230.0070.00319.21
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0030.00617.22
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0070.00418.41
8.1.160.0040.00421.93
8.1.150.0070.00018.75
8.1.140.0000.00717.41
8.1.130.0000.00717.75
8.1.120.0040.00417.38
8.1.110.0000.00717.22
8.1.100.0000.00717.35
8.1.90.0070.00017.35
8.1.80.0070.00017.30
8.1.70.0000.00717.28
8.1.60.0060.00317.34
8.1.50.0060.00317.50
8.1.40.0040.00417.46
8.1.30.0000.00917.52
8.1.20.0000.00817.40
8.1.10.0000.00817.41
8.1.00.0000.00817.34
8.0.300.0000.00818.77
8.0.290.0050.00316.75
8.0.280.0000.00718.33
8.0.270.0070.00017.18
8.0.260.0030.00317.18
8.0.250.0030.00316.98
8.0.240.0050.00316.93
8.0.230.0000.00716.88
8.0.220.0030.00316.78
8.0.210.0000.00716.88
8.0.200.0000.00616.93
8.0.190.0070.00016.91
8.0.180.0070.00416.92
8.0.170.0000.00816.85
8.0.160.0020.00516.84
8.0.150.0090.00316.62
8.0.140.0000.00716.72
8.0.130.0050.00213.26
8.0.120.0030.00516.82
8.0.110.0000.00716.88
8.0.100.0040.00416.70
8.0.90.0040.00416.89
8.0.80.0060.01016.83
8.0.70.0050.00316.72
8.0.60.0000.00716.75
8.0.50.0040.00416.73
8.0.30.0150.00617.04
8.0.20.0100.00917.40
8.0.10.0040.00416.92
8.0.00.0090.01016.70
7.4.330.0050.00015.07
7.4.320.0060.00016.36
7.4.300.0070.00016.39
7.4.290.0000.00816.30
7.4.280.0060.00516.46
7.4.270.0060.00316.45
7.4.260.0030.00616.27
7.4.250.0050.00316.25
7.4.240.0020.00516.44
7.4.230.0030.00316.47
7.4.220.0140.00716.48
7.4.210.0060.00916.39
7.4.200.0030.00416.19
7.4.160.0100.00716.33
7.4.150.0080.01117.40
7.4.140.0110.01517.86
7.4.130.0090.00716.44
7.4.120.0100.00916.37
7.4.110.0100.00716.36
7.4.100.0060.01216.39
7.4.90.0090.00916.35
7.4.80.0160.00619.39
7.4.70.0160.00416.20
7.4.60.0100.00716.10
7.4.50.0080.00016.50
7.4.40.0030.01316.53
7.4.30.0080.01216.21
7.4.00.0100.00814.86
7.3.330.0000.00513.05
7.3.320.0000.00513.00
7.3.310.0030.00316.15
7.3.300.0030.00316.22
7.3.290.0030.01016.18
7.3.280.0120.00516.17
7.3.270.0080.00817.40
7.3.260.0140.00316.16
7.3.250.0120.00516.22
7.3.240.0130.01016.41
7.3.230.0070.01016.39
7.3.210.0100.00716.39
7.3.200.0030.01319.39
7.3.190.0090.00916.14
7.3.180.0000.01516.23
7.3.170.0060.00916.46
7.3.160.0110.00816.44
7.3.120.0080.01214.67
7.3.110.0070.01114.80
7.3.100.0000.01014.87
7.3.90.0080.00414.77
7.3.80.0070.00314.68
7.3.70.0050.00514.51
7.3.60.0000.01314.67
7.3.50.0000.01314.58
7.3.40.0070.01014.50
7.3.30.0080.00814.60
7.3.20.0060.01016.71
7.3.10.0110.00416.52
7.3.00.0070.00716.62
7.2.330.0040.01416.54
7.2.320.0140.00316.33
7.2.310.0130.00816.21
7.2.300.0040.01116.36
7.2.290.0060.00916.45
7.2.250.0060.01014.81
7.2.240.0030.01515.02
7.2.230.0070.01014.84
7.2.220.0030.01015.03
7.2.210.0040.01114.62
7.2.200.0040.00414.54
7.2.190.0100.00014.79
7.2.180.0090.00014.96
7.2.170.0100.00714.93
7.2.60.0080.00816.21
7.2.00.0030.01018.88
7.1.330.0030.01015.78
7.1.320.0070.00715.40
7.1.310.0070.00715.63
7.1.300.0110.00415.57
7.1.290.0000.01315.52
7.1.280.0040.01115.30
7.1.270.0090.00015.42
7.1.260.0070.00715.36
7.1.200.0030.01015.77
7.1.100.0000.01217.84
7.1.70.0040.00416.89
7.1.60.0130.01019.46
7.1.50.0100.01016.51
7.1.00.0030.07722.32
7.0.200.0130.01016.50
7.0.140.0170.06321.96
7.0.60.0170.05019.92
7.0.50.0070.07317.76
7.0.40.0000.04720.06
7.0.30.0470.06020.09
7.0.20.0200.05720.34
7.0.10.0200.05720.04
7.0.00.0070.04020.19
5.6.280.0070.07020.80
5.6.210.0070.06720.60
5.6.200.0070.08318.20
5.6.190.0070.04720.45
5.6.180.0330.05020.41
5.6.170.0300.07020.33
5.6.160.0030.04320.50
5.6.150.0030.05318.20
5.6.140.0000.08718.15
5.6.130.0100.03718.20
5.6.120.0100.03321.01
5.6.110.0100.08320.97
5.6.100.0070.06321.10
5.6.90.0170.06721.12
5.6.80.0030.07020.34
5.6.70.0330.07320.27
5.5.350.0100.08720.43
5.5.340.0070.04717.98
5.5.330.0100.08020.40
5.5.320.0400.03720.31
5.5.310.0270.08020.16
5.5.300.0100.04718.02
5.5.290.0030.08317.89
5.5.280.0030.04720.84
5.5.270.0100.03320.79
5.5.260.0100.08720.88
5.5.250.0070.07020.65
5.5.240.0130.06320.18
5.4.450.1470.04319.21
5.4.440.2130.04719.54
5.4.430.2600.04719.45
5.4.420.2470.04019.40
5.4.410.2270.04019.32
5.4.400.2700.03719.09
5.4.390.2400.03018.77
5.4.380.2400.04719.16
5.4.370.2400.04019.13
5.4.360.0130.03719.08
5.4.350.1470.05019.13
5.4.340.2300.03319.10
5.4.320.2270.04018.80
5.4.310.2400.02318.80
5.4.300.2330.03019.09
5.4.290.2370.04019.22
5.4.280.2270.03318.79
5.4.270.2270.03719.21
5.4.260.2700.03719.25
5.4.250.1300.04019.12
5.4.240.0030.04319.09
5.4.230.0070.03319.05
5.4.220.1630.03319.07
5.4.210.2370.03319.13
5.4.200.2570.03719.05
5.4.190.2570.04318.87
5.4.180.2430.04719.08
5.4.170.2570.03319.08
5.4.160.2470.03319.06
5.4.150.2300.04319.11
5.4.140.2500.03716.53
5.4.130.0130.06316.43
5.4.120.0030.03716.18
5.4.110.0000.07016.41
5.4.100.1970.04316.41
5.4.90.2130.03716.36
5.4.80.2100.04016.48
5.4.70.2430.04316.48
5.4.60.2530.03716.16
5.4.50.2500.04016.47
5.4.40.2430.04316.39
5.4.30.2500.03316.18
5.4.20.2470.04016.31
5.4.10.2530.03316.40
5.4.00.2470.04315.81
5.3.290.2500.03714.54
5.3.280.2470.04014.46
5.3.270.2570.03714.55
5.3.260.2470.03714.46
5.3.250.2230.03014.47
5.3.240.2400.03714.54
5.3.230.2500.04314.45
5.3.220.0670.04714.52
5.3.210.0070.05714.44
5.3.200.0270.07714.52
5.3.190.2430.04014.40
5.3.180.2130.04014.41
5.3.170.2230.03314.51
5.3.160.2430.04014.50
5.3.150.2200.03314.60
5.3.140.2430.03714.45
5.3.130.2600.05014.38
5.3.120.2570.03714.54
5.3.110.2400.03014.53
5.3.100.2630.03713.96
5.3.90.3000.03713.87
5.3.80.2330.04013.85
5.3.70.2230.03713.89
5.3.60.2270.03313.94
5.3.50.1900.03713.85
5.3.40.2400.03713.99
5.3.30.2300.03013.84
5.3.20.1070.03713.63
5.3.10.0030.03313.51
5.3.00.0030.03313.68
5.2.170.1600.02711.03
5.2.160.1470.02711.17
5.2.150.1770.03011.19
5.2.140.1670.03310.97
5.2.130.1870.03011.01
5.2.120.1930.02711.15
5.2.110.1830.03311.00
5.2.100.1830.03310.94
5.2.90.1800.03311.11
5.2.80.1870.03010.98
5.2.70.2000.03711.14
5.2.60.0530.03010.89
5.2.50.0000.03010.87
5.2.40.0000.03010.93
5.2.30.0130.03310.83
5.2.20.1330.02010.81
5.2.10.1100.02310.77
5.2.00.1600.03310.78
5.1.60.1330.02310.07
5.1.50.1330.0239.89
5.1.40.1170.0209.87
5.1.30.1500.02310.45
5.1.20.1470.02710.32
5.1.10.1470.02710.04
5.1.00.1330.0239.94
5.0.50.0600.0208.54
5.0.40.0600.0178.49
5.0.30.0800.0238.15
5.0.20.0800.0308.09
5.0.10.0830.0178.14
5.0.00.0330.0278.38
4.4.90.0000.0177.75
4.4.80.0000.0177.75
4.4.70.0000.0177.75
4.4.60.0000.0177.75
4.4.50.0000.0177.75
4.4.40.0000.0237.75
4.4.30.0100.0077.75
4.4.20.0030.0177.75
4.4.10.0200.0107.75
4.4.00.0670.0277.75
4.3.110.0670.0177.75
4.3.100.0870.0237.75
4.3.90.0700.0137.75
4.3.80.0670.0237.75
4.3.70.0700.0177.75
4.3.60.0800.0137.75
4.3.50.0670.0177.75
4.3.40.0730.0277.75
4.3.30.0470.0277.75
4.3.20.0370.0177.75
4.3.10.0500.0277.75
4.3.00.0370.0177.75

preferences:
39.23 ms | 400 KiB | 5 Q