3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substring('foo', 0, ''));

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)
8.3.40.0040.01118.75
8.3.30.0090.00919.21
8.3.20.0080.00020.14
8.3.10.0000.00823.61
8.3.00.0040.00420.82
8.2.170.0040.01122.96
8.2.160.0070.00720.49
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0030.00520.79
8.2.110.0070.00320.48
8.2.100.0000.01117.91
8.2.90.0000.00819.22
8.2.80.0000.00817.97
8.2.70.0040.00417.50
8.2.60.0000.00717.80
8.2.50.0050.00318.07
8.2.40.0030.00719.94
8.2.30.0000.00818.19
8.2.20.0000.00817.72
8.2.10.0020.00517.86
8.2.00.0040.00417.63
8.1.270.0130.00623.77
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0100.00019.01
8.1.230.0080.00417.42
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0040.00417.22
8.1.190.0000.00917.10
8.1.180.0040.00418.10
8.1.170.0050.00318.41
8.1.160.0040.00421.95
8.1.150.0000.00718.50
8.1.140.0070.00017.26
8.1.130.0070.00017.76
8.1.120.0070.00317.31
8.1.110.0050.00217.19
8.1.100.0040.00417.34
8.1.90.0050.00217.30
8.1.80.0000.00817.33
8.1.70.0050.00217.24
8.1.60.0080.00317.50
8.1.50.0040.00417.36
8.1.40.0050.00317.42
8.1.30.0000.00917.55
8.1.20.0040.00417.57
8.1.10.0000.00717.52
8.1.00.0030.00517.46
8.0.300.0080.00018.77
8.0.290.0000.00716.74
8.0.280.0000.00718.30
8.0.270.0080.00017.24
8.0.260.0000.00717.19
8.0.250.0030.00316.91
8.0.240.0030.00316.96
8.0.230.0000.00716.88
8.0.220.0070.00016.80
8.0.210.0000.00916.79
8.0.200.0000.00716.83
8.0.190.0070.00016.84
8.0.180.0050.00216.80
8.0.170.0040.00416.82
8.0.160.0040.00416.75
8.0.150.0030.00316.74
8.0.140.0070.00016.88
8.0.130.0030.00613.30
8.0.120.0040.00416.88
8.0.110.0000.00716.73
8.0.100.0000.00716.87
8.0.90.0000.00716.91
8.0.80.0070.01416.81
8.0.70.0000.00716.71
8.0.60.0040.00416.72
8.0.50.0050.00216.68
8.0.30.0060.01416.97
8.0.20.0080.01017.40
8.0.10.0000.00716.94
8.0.00.0090.01216.52
7.4.330.0020.00215.00
7.4.320.0070.00016.38
7.4.300.0040.00416.36
7.4.290.0030.00316.53
7.4.280.0030.00616.50
7.4.270.0070.00016.54
7.4.260.0000.00716.47
7.4.250.0070.00016.45
7.4.240.0040.00416.42
7.4.230.0000.00716.24
7.4.220.0050.01416.64
7.4.210.0030.01316.41
7.4.200.0050.00216.63
7.4.190.0030.00316.59
7.4.160.0090.01316.34
7.4.150.0180.00017.40
7.4.140.0120.00517.86
7.4.130.0170.01416.58
7.4.120.0100.00716.42
7.4.110.0000.01716.33
7.4.100.0050.01116.36
7.4.90.0090.00916.63
7.4.80.0190.00019.39
7.4.70.0070.01016.41
7.4.60.0120.00916.38
7.4.50.0030.00316.34
7.4.40.0110.00716.32
7.4.30.0080.00816.43
7.4.10.0030.01516.61
7.4.00.0050.00915.62
7.3.330.0080.00012.96
7.3.320.0000.00612.96
7.3.310.0000.00716.25
7.3.300.0040.00416.24
7.3.290.0070.00716.29
7.3.280.0070.00816.21
7.3.270.0110.00717.40
7.3.260.0110.00616.20
7.3.250.0110.00616.30
7.3.240.0130.00316.50
7.3.230.0130.00316.41
7.3.210.0180.00016.49
7.3.200.0090.01319.39
7.3.190.0060.01216.45
7.3.180.0100.00616.48
7.3.170.0130.00316.45
7.3.160.0190.00316.29
7.3.130.0120.00616.23
7.3.120.0070.00915.62
7.3.110.0000.01315.51
7.3.100.0030.01215.54
7.3.90.0100.00315.41
7.3.80.0050.00815.30
7.3.70.0080.00615.37
7.3.60.0060.00615.45
7.3.50.0030.01215.47
7.3.40.0050.00815.51
7.3.30.0030.00915.49
7.3.20.0050.00917.46
7.3.10.0090.00617.18
7.3.00.0080.00417.30
7.2.330.0130.00316.46
7.2.320.0080.01216.23
7.2.310.0090.01516.28
7.2.300.0100.01016.39
7.2.290.0070.01016.53
7.2.260.0100.01016.22
7.2.250.0030.01616.12
7.2.240.0060.00915.54
7.2.230.0080.00815.72
7.2.220.0020.01215.55
7.2.210.0050.01215.53
7.2.200.0050.00915.59
7.2.190.0030.01115.42
7.2.180.0070.00715.50
7.2.170.0040.00915.56
7.2.160.0080.00515.67
7.2.150.0080.00817.32
7.2.140.0080.00517.46
7.2.130.0080.00817.46
7.2.120.0080.00517.46
7.2.110.0050.00717.25
7.2.100.0080.00517.54
7.2.90.0090.00717.44
7.2.80.0020.00917.41
7.2.70.0070.00517.38
7.2.60.0080.00716.98
7.2.50.0030.01217.37
7.2.40.0070.00717.43
7.2.30.0070.00817.53
7.2.20.0060.00817.48
7.2.10.0020.01117.48
7.2.00.0060.01018.15
7.1.330.0080.00816.30
7.1.320.0020.00916.36
7.1.310.0070.00816.36
7.1.300.0060.00616.35
7.1.290.0050.00616.38
7.1.280.0030.01016.15
7.1.270.0100.00316.30
7.1.260.0050.00616.38
7.1.250.0110.00516.32
7.1.240.0040.00816.92
7.1.230.0100.00317.10
7.1.220.0060.00817.12
7.1.210.0040.00817.08
7.1.200.0030.00816.29
7.1.190.0040.01217.11
7.1.180.0000.01517.03
7.1.170.0100.00717.07
7.1.160.0150.00017.10
7.1.150.0060.01016.96
7.1.140.0070.00717.11
7.1.130.0080.00416.93
7.1.120.0130.00317.11
7.1.110.0000.01117.14
7.1.100.0050.00417.61
7.1.90.0110.00017.02
7.1.80.0030.01217.16
7.1.70.0110.00917.11
7.1.60.0050.01418.40
7.1.50.0030.01116.85
7.1.40.0030.01017.16
7.1.30.0090.00617.14
7.1.20.0060.00917.08
7.1.10.0060.00616.96
7.1.00.0030.05019.83
7.0.330.0040.00816.68
7.0.320.0100.00317.03
7.0.310.0130.00316.79
7.0.300.0070.00716.85
7.0.290.0040.00416.96
7.0.280.0030.00916.77
7.0.270.0060.00317.00
7.0.260.0000.01016.84
7.0.250.0100.00316.67
7.0.240.0030.01117.07
7.0.230.0060.00616.68
7.0.220.0000.01216.96
7.0.210.0000.01116.80
7.0.200.0060.00416.67
7.0.190.0030.00616.86
7.0.180.0030.00616.69
7.0.170.0060.00317.00
7.0.160.0090.00316.91
7.0.150.0100.00316.75
7.0.140.0000.04619.56
7.0.130.0030.00916.74
7.0.120.0030.00616.90
7.0.110.0000.01016.95
7.0.100.0000.01317.00
7.0.90.0060.00616.68
7.0.80.0100.00016.96
7.0.70.0030.01016.80
7.0.60.0060.04618.35
7.0.50.0030.04517.28
7.0.40.0060.02417.56
7.0.30.0280.03517.31
7.0.20.0190.02617.53
7.0.10.0100.03917.46
7.0.00.0020.02617.39
5.6.400.0060.00615.82
5.6.390.0050.01015.70
5.6.380.0000.01315.78
5.6.370.0100.00315.77
5.6.360.0060.00315.58
5.6.350.0070.00715.75
5.6.340.0170.00015.87
5.6.330.0070.00715.45
5.6.320.0060.00915.50
5.6.310.0060.00915.35
5.6.300.0060.00915.46
5.6.290.0070.01015.77
5.6.280.0050.03718.14
5.6.270.0000.01215.77
5.6.260.0070.00715.81
5.6.250.0040.01115.82
5.6.240.0050.00515.61
5.6.230.0060.00315.53
5.6.220.0120.00315.54
5.6.210.0050.03817.95
5.6.200.0070.03316.80
5.6.190.0090.04417.99
5.6.180.0200.03917.91
5.6.170.0210.04618.09
5.6.160.0030.02817.95
5.6.150.0070.04316.87
5.6.140.0050.03216.88
5.6.130.0050.02816.89
5.6.120.0020.02518.24
5.6.110.0100.04018.19
5.6.100.0050.04518.24
5.6.90.0050.04718.25
5.6.80.0120.04017.96
5.6.70.2290.02317.94
5.6.60.0070.00715.66
5.6.50.0030.00715.55
5.6.40.0050.00815.36
5.6.30.0110.00315.79
5.6.20.0060.00315.52
5.6.10.0040.01115.49
5.6.00.0030.00615.58
5.5.380.0040.00815.60
5.5.370.0060.00615.79
5.5.360.0080.00315.54
5.5.350.0050.02817.95
5.5.340.0080.04316.68
5.5.330.0080.04617.74
5.5.320.0180.03017.79
5.5.310.0210.01818.01
5.5.300.0130.04016.76
5.5.290.0100.03016.72
5.5.280.0050.04318.15
5.5.270.0130.04218.16
5.5.260.0060.04318.20
5.5.250.0120.03018.00
5.5.240.0140.03917.82
5.5.230.0030.01215.41
5.5.220.0100.00315.42
5.5.210.0070.00415.49
5.5.200.0060.00615.50
5.5.190.0000.01415.50
5.5.180.0080.00415.25
5.5.170.0070.00715.24
5.5.160.0060.00615.51
5.5.150.0040.00715.20
5.5.140.0090.00315.57
5.5.130.0030.01215.13
5.5.120.0040.01115.59
5.5.110.0030.00615.54
5.5.100.0090.00615.58
5.5.90.0060.00915.57
5.5.80.0040.01215.48
5.5.70.0000.01415.32
5.5.60.0100.00315.43
5.5.50.0030.00615.48
5.5.40.0080.00415.57
5.5.30.0000.01115.22
5.5.20.0070.00715.48
5.5.10.0110.00015.54
5.5.00.0060.00315.35
5.4.450.0260.03315.96
5.4.440.0370.03516.05
5.4.430.0380.03016.05
5.4.420.0380.00215.89
5.4.410.0110.03115.75
5.4.400.0100.03415.48
5.4.390.0170.02915.55
5.4.380.0060.03115.62
5.4.370.0050.02315.49
5.4.360.0120.02615.53
5.4.350.0080.02312.22
5.4.340.0080.02212.22
5.4.330.0060.00312.47
5.4.320.0050.02412.46
5.4.310.0040.02112.46
5.4.300.0060.02212.46
5.4.290.0070.02212.46
5.4.280.0040.02312.41
5.4.270.0030.02412.41
5.4.260.0040.02212.41
5.4.250.0060.02212.41
5.4.240.0030.02312.41
5.4.230.0080.02212.40
5.4.220.0060.02912.40
5.4.210.0060.02712.41
5.4.200.0070.03012.40
5.4.190.0060.03812.40
5.4.180.0100.02912.40
5.4.170.0080.02712.41
5.4.160.0020.02612.41
5.4.150.0080.01912.40
5.4.140.0060.02012.25
5.4.130.0080.01912.24
5.4.120.0070.02012.22
5.4.110.0040.02312.21
5.4.100.0040.02212.22
5.4.90.0050.02512.21
5.4.80.0050.02412.21
5.4.70.0030.02312.21
5.4.60.0060.02112.21
5.4.50.0060.02012.21
5.4.40.0070.02112.21
5.4.30.0080.02112.21
5.4.20.0060.02112.21
5.4.10.0070.02012.21
5.4.00.0060.02511.95
5.3.290.0060.02312.78
5.3.280.0070.02412.73
5.3.270.0060.02612.78
5.3.260.0080.02112.74
5.3.250.0080.02712.67
5.3.240.0060.02312.60
5.3.230.0040.02812.62
5.3.220.0040.02412.59
5.3.210.0040.02512.67
5.3.200.0050.02112.65
5.3.190.0060.02712.83
5.3.180.0050.03012.76
5.3.170.0040.02412.71
5.3.160.0040.02512.78
5.3.150.0090.02212.83
5.3.140.0080.02012.74
5.3.130.0100.02112.71
5.3.120.0040.02312.79
5.3.110.0060.02112.74
5.3.100.0070.02012.43
5.3.90.0060.02112.39
5.3.80.0050.02312.29
5.3.70.0040.02312.38
5.3.60.0070.02112.43
5.3.50.0020.02212.37
5.3.40.0030.02212.38
5.3.30.0060.02112.34
5.3.20.0050.02212.17
5.3.10.0040.02212.08
5.3.00.0040.02312.10
5.2.170.0040.0329.18
5.2.160.0040.0309.18
5.2.150.0060.0299.18
5.2.140.0030.0329.18
5.2.130.0060.0279.14
5.2.120.0080.0279.14
5.2.110.0050.0319.14
5.2.100.0050.0289.14
5.2.90.0050.0289.14
5.2.80.0050.0309.13
5.2.70.0070.0289.13
5.2.60.0030.0329.09
5.2.50.0040.0319.06
5.2.40.0060.0289.03
5.2.30.0070.0299.01
5.2.20.0060.0279.00
5.2.10.0050.0328.92
5.2.00.0050.0388.78
5.1.60.0050.0228.07
5.1.50.0050.0238.06
5.1.40.0020.0278.04
5.1.30.0060.0278.39
5.1.20.0060.0258.41
5.1.10.0060.0298.13
5.1.00.0050.0298.14
5.0.50.0030.0216.61
5.0.40.0050.0196.47
5.0.30.0060.0306.29
5.0.20.0040.0196.26
5.0.10.0040.0216.24
5.0.00.0040.0336.23
4.4.90.0030.0154.77
4.4.80.0020.0164.76
4.4.70.0030.0164.75
4.4.60.0040.0164.75
4.4.50.0020.0174.77
4.4.40.0040.0254.70
4.4.30.0020.0184.76
4.4.20.0030.0164.84
4.4.10.0020.0184.84
4.4.00.0030.0264.76
4.3.110.0030.0154.67
4.3.100.0050.0134.67
4.3.90.0020.0164.63
4.3.80.0060.0214.59
4.3.70.0050.0184.63
4.3.60.0040.0134.63
4.3.50.0020.0164.63
4.3.40.0020.0284.54
4.3.30.0010.0173.27
4.3.20.0020.0163.25
4.3.10.0020.0163.21
4.3.00.0100.0237.44

preferences:
46.83 ms | 400 KiB | 5 Q