3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('sdfs', 0, 1); ?>

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)
8.3.60.0170.00318.18
8.3.50.0130.00822.08
8.3.40.0040.01118.47
8.3.30.0040.01118.98
8.3.20.0000.00720.07
8.3.10.0040.00423.47
8.3.00.0040.00417.50
8.2.180.0190.00316.38
8.2.170.0070.01118.72
8.2.160.0070.00722.96
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00319.36
8.2.110.0030.00619.13
8.2.100.0110.00417.63
8.2.90.0040.00418.98
8.2.80.0000.00817.97
8.2.70.0000.00817.38
8.2.60.0000.00717.80
8.2.50.0000.00818.07
8.2.40.0030.00519.88
8.2.30.0000.00717.87
8.2.20.0060.00317.48
8.2.10.0040.00417.84
8.2.00.0060.00317.45
8.1.280.0100.01025.92
8.1.270.0030.00620.24
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0060.00322.19
8.1.230.0040.00817.54
8.1.220.0000.00817.74
8.1.210.0030.00518.77
8.1.200.0030.00617.23
8.1.190.0000.00817.10
8.1.180.0000.00718.10
8.1.170.0040.00420.28
8.1.160.0040.00421.93
8.1.150.0050.00318.85
8.1.140.0030.00617.19
8.1.130.0000.00717.66
8.1.120.0000.00817.20
8.1.110.0000.00817.38
8.1.100.0000.00717.30
8.1.90.0000.00717.33
8.1.80.0000.00817.34
8.1.70.0030.00317.27
8.1.60.0060.00317.33
8.1.50.0000.00817.41
8.1.40.0060.00317.41
8.1.30.0090.00017.50
8.1.20.0040.00417.54
8.1.10.0000.00817.43
8.1.00.0040.00417.35
8.0.300.0040.00418.77
8.0.290.0050.00316.63
8.0.280.0020.00518.29
8.0.270.0050.00317.10
8.0.260.0060.00017.12
8.0.250.0000.00716.80
8.0.240.0040.00416.89
8.0.230.0000.00916.86
8.0.220.0000.00716.78
8.0.210.0030.00316.84
8.0.200.0030.00316.84
8.0.190.0080.00016.78
8.0.180.0000.00716.80
8.0.170.0070.00016.82
8.0.160.0000.00716.66
8.0.150.0000.00816.70
8.0.140.0040.00416.68
8.0.130.0040.00413.27
8.0.120.0040.00416.74
8.0.110.0040.00416.82
8.0.100.0000.00716.66
8.0.90.0080.00016.76
8.0.80.0030.01316.71
8.0.70.0000.00716.74
8.0.60.0040.00416.63
8.0.50.0030.00516.71
8.0.30.0110.01117.04
8.0.20.0110.01117.40
8.0.10.0040.00416.74
8.0.00.0110.00716.67
7.4.330.0050.00015.03
7.4.320.0060.00016.32
7.4.300.0070.00016.36
7.4.290.0000.00716.37
7.4.280.0060.00316.50
7.4.270.0000.00716.41
7.4.260.0000.00716.36
7.4.250.0060.00316.40
7.4.240.0000.00716.32
7.4.230.0040.00416.44
7.4.220.0130.01016.56
7.4.210.0100.00316.44
7.4.200.0030.00316.56
7.4.160.0090.00916.51
7.4.150.0120.00617.40
7.4.140.0100.00817.86
7.4.130.0130.00716.50
7.4.120.0160.00316.42
7.4.110.0150.00916.42
7.4.100.0060.01416.23
7.4.90.0130.00416.39
7.4.80.0070.01319.39
7.4.70.0100.00716.51
7.4.60.0090.00616.22
7.4.50.0000.00516.21
7.4.40.0090.00916.27
7.4.30.0100.01316.39
7.4.00.0100.00314.55
7.3.330.0060.00013.04
7.3.320.0110.00612.91
7.3.310.0050.00216.05
7.3.300.0000.00616.09
7.3.290.0110.00516.15
7.3.280.0030.01216.10
7.3.270.0200.00317.40
7.3.260.0060.01216.52
7.3.250.0110.00916.36
7.3.240.0120.00916.30
7.3.230.0180.00016.39
7.3.210.0030.01216.21
7.3.200.0130.00919.39
7.3.190.0150.00916.15
7.3.180.0070.01416.18
7.3.170.0070.01016.27
7.3.160.0120.00416.06
7.3.10.0080.00416.62
7.3.00.0050.00516.73
7.2.330.0140.00716.53
7.2.320.0100.01316.56
7.2.310.0150.00316.42
7.2.300.0090.00616.18
7.2.290.0000.01716.54
7.2.130.0080.00416.61
7.2.120.0090.00316.79
7.2.110.0030.00616.77
7.2.100.0090.00316.75
7.2.90.0000.01516.93
7.2.80.0080.00416.80
7.2.70.0050.00516.70
7.2.60.0030.00616.41
7.2.50.0030.00916.86
7.2.40.0030.00616.62
7.2.30.0080.00416.74
7.2.20.0040.00716.59
7.2.10.0060.00616.51
7.2.00.0060.00518.17
7.1.250.0070.00315.64
7.1.100.0000.01118.09
7.1.70.0050.00517.07
7.1.60.0070.01719.50
7.1.50.0230.01034.66
7.1.00.0000.08022.57
7.0.200.0080.00316.73
7.0.140.0000.05722.08
7.0.60.0030.08719.92
7.0.50.0070.05017.82
7.0.40.0170.07320.29
7.0.30.0300.08320.00
7.0.20.0270.05020.29
7.0.10.0270.07720.20
7.0.00.0070.05720.00
5.6.280.0070.06720.77
5.6.210.0130.07720.54
5.6.200.0100.06718.13
5.6.190.0100.08720.78
5.6.180.0330.08720.25
5.6.170.0170.04720.50
5.6.160.0070.03720.54
5.6.150.0000.07318.21
5.6.140.0000.04718.15
5.6.130.0000.06018.09
5.6.120.0070.05321.13
5.6.110.0100.07021.13
5.6.100.0030.07720.95
5.6.90.0030.04321.01
5.6.80.0100.06020.34
5.6.70.0230.06020.36
5.5.350.0200.08020.33
5.5.340.0100.08018.01
5.5.330.0000.04720.57
5.5.320.0170.04320.29
5.5.310.0270.07720.27
5.5.300.0130.04718.02
5.5.290.0070.06718.02
5.5.280.0030.07020.89
5.5.270.0070.06720.75
5.5.260.0070.04320.84
5.5.250.0070.08320.57
5.5.240.0030.08720.15
5.4.450.0630.06019.63
5.4.440.0670.06319.44
5.4.430.0900.07019.54
5.4.420.0570.07019.47
5.4.410.0030.06018.68
5.4.400.0470.06718.78
5.4.390.0470.06018.59
5.4.380.0330.08018.68
5.4.370.0430.07318.68
5.4.360.0430.07318.47
5.4.350.0500.06718.50
5.4.340.0570.06018.59
5.4.320.0330.08018.73
5.4.310.0470.07718.48
5.4.300.0500.06718.64
5.4.290.0370.07718.64
5.4.280.0370.07718.64
5.4.270.0370.06718.62
5.4.260.0330.06318.61
5.4.250.0500.06318.55
5.4.240.0500.07718.60
5.4.230.0630.05018.63
5.4.220.0330.08018.57
5.4.210.0530.05718.69
5.4.200.0470.06316.74
5.4.190.0530.06318.68
5.4.180.0500.06718.63
5.4.170.0430.07718.45
5.4.160.0500.06018.59
5.4.150.0400.07718.44
5.4.140.0570.05716.09
5.4.130.0400.06316.26
5.4.120.0470.05716.25
5.4.110.0430.06316.21
5.4.100.0530.06016.26
5.4.90.0270.06016.05
5.4.80.0400.05016.17
5.4.70.0430.06716.04
5.4.60.0470.07016.13
5.4.50.0530.05716.03
5.4.40.0500.05716.23
5.4.30.0500.05716.18
5.4.20.0400.07316.05
5.4.10.0330.06716.04
5.4.00.0330.06715.50
5.3.290.0370.08014.71
5.3.280.0470.06314.66
5.3.270.0500.07014.60
5.3.260.0400.05014.63
5.3.250.0430.07014.51
5.3.240.0500.07314.58
5.3.230.0470.06014.66
5.3.220.0670.05714.57
5.3.210.0500.06014.55
5.3.200.0600.04314.54
5.3.190.0370.07014.65
5.3.180.0370.06014.63
5.3.170.0370.06014.55
5.3.160.0470.06314.46
5.3.150.0470.07714.45
5.3.140.0370.06314.62
5.3.130.0570.05014.45
5.3.120.0630.05314.45
5.3.110.0470.05314.64
5.3.100.0430.05313.96
5.3.90.0430.05314.05
5.3.80.0470.05013.95
5.3.70.0400.04713.98
5.3.60.0530.04313.91
5.3.50.0500.05313.87
5.3.40.0570.05013.93
5.3.30.0500.05313.88
5.3.20.0330.05313.72
5.3.10.0330.05713.73
5.3.00.0430.07013.57
5.2.170.0270.04711.17
5.2.160.0300.04011.07
5.2.150.0400.04011.29
5.2.140.0370.05011.19
5.2.130.0500.04311.17
5.2.120.0400.04011.15
5.2.110.0430.04011.03
5.2.100.0330.05011.14
5.2.90.0470.04311.27
5.2.80.0400.04711.05
5.2.70.0500.05711.14
5.2.60.0330.06011.05
5.2.50.0300.05011.00
5.2.40.0330.04710.94
5.2.30.0370.04011.12
5.2.20.0270.04310.98
5.2.10.0370.04710.95
5.2.00.0300.04010.66
5.1.60.0230.0539.96
5.1.50.0200.05010.05
5.1.40.0400.04710.02
5.1.30.0270.05710.42
5.1.20.0400.05010.32
5.1.10.0270.05010.20
5.1.00.0130.04010.07
5.0.50.0170.0338.66
5.0.40.0200.0378.39
5.0.30.0100.0638.23
5.0.20.0200.0378.26
5.0.10.0200.0478.29
5.0.00.0130.0608.34
4.4.90.0230.0235.92
4.4.80.0100.0375.89
4.4.70.0100.0235.92
4.4.60.0070.0235.88
4.4.50.0030.0305.88
4.4.40.0200.0405.88
4.4.30.0100.0235.89
4.4.20.0100.0235.91
4.4.10.0170.0306.00
4.4.00.0130.0375.91
4.3.110.0170.0235.80
4.3.100.0200.0235.87
4.3.90.0130.0275.85
4.3.80.0100.0405.77
4.3.70.0100.0305.91
4.3.60.0100.0305.90
4.3.50.0030.0275.90
4.3.40.0170.0335.87
4.3.30.0030.0274.56
4.3.20.0030.0274.52
4.3.10.0030.0234.54
4.3.00.0030.0206.75

preferences:
50.32 ms | 401 KiB | 5 Q