3v4l.org

run code in 300+ PHP versions simultaneously
<?php $cl = `substr('clgt',1,2)`; echo $cl;

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)
8.3.40.0070.00718.67
8.3.30.0070.00718.91
8.3.20.0040.00420.43
8.3.10.0030.00523.65
8.3.00.0060.00317.50
8.2.170.0170.00322.96
8.2.160.0110.00420.57
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0000.00721.00
8.2.110.0090.00022.39
8.2.100.0120.00018.16
8.2.90.0030.00519.34
8.2.80.0000.00817.97
8.2.70.0060.00317.50
8.2.60.0000.00818.05
8.2.50.0060.00318.07
8.2.40.0050.00319.72
8.2.30.0080.00017.94
8.2.20.0050.00317.55
8.2.10.0050.00318.14
8.2.00.0070.00017.66
8.1.270.0090.00023.96
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00322.04
8.1.230.0090.00319.13
8.1.220.0030.00617.74
8.1.210.0050.00318.77
8.1.200.0030.00717.35
8.1.190.0050.00317.23
8.1.180.0000.00818.10
8.1.170.0080.00018.49
8.1.160.0000.00822.05
8.1.150.0020.00518.79
8.1.140.0040.00417.38
8.1.130.0000.00817.82
8.1.120.0070.00017.24
8.1.110.0000.00817.46
8.1.100.0070.00017.37
8.1.90.0000.00717.39
8.1.80.0000.00717.43
8.1.70.0000.00817.32
8.1.60.0040.00517.53
8.1.50.0030.00517.33
8.1.40.0050.00317.48
8.1.30.0030.00517.57
8.1.20.0030.00517.60
8.1.10.0000.00717.41
8.1.00.0040.00417.48
8.0.300.0050.00318.77
8.0.290.0070.00016.88
8.0.280.0000.00718.50
8.0.270.0050.00317.24
8.0.260.0070.00017.30
8.0.250.0030.00316.94
8.0.240.0000.00716.90
8.0.230.0040.00416.81
8.0.220.0070.00016.84
8.0.210.0000.00816.91
8.0.200.0030.00316.86
8.0.190.0000.00816.88
8.0.180.0030.00416.77
8.0.170.0050.00316.88
8.0.160.0070.00016.81
8.0.150.0080.00016.80
8.0.140.0070.00016.87
8.0.130.0030.00313.29
8.0.120.0000.00816.84
8.0.110.0060.00316.82
8.0.100.0040.00416.84
8.0.90.0040.00416.91
8.0.80.0070.01016.90
8.0.70.0060.00316.68
8.0.60.0000.00716.95
8.0.50.0040.00416.76
8.0.30.0130.00917.12
8.0.20.0160.00317.40
8.0.10.0000.00816.89
8.0.00.0030.01416.86
7.4.330.0050.00015.00
7.4.320.0070.00016.57
7.4.300.0000.00716.48
7.4.290.0000.00716.33
7.4.280.0090.00316.48
7.4.270.0040.00416.58
7.4.260.0040.00416.50
7.4.250.0040.00416.43
7.4.240.0030.00416.51
7.4.230.0040.00416.55
7.4.220.0090.00916.46
7.4.210.0150.00416.45
7.4.200.0000.00716.42
7.4.160.0040.01216.50
7.4.150.0100.01017.40
7.4.140.0130.01017.86
7.4.130.0150.00616.56
7.4.120.0140.00416.38
7.4.110.0030.01316.55
7.4.100.0090.00916.38
7.4.90.0040.01416.34
7.4.80.0090.01519.39
7.4.70.0180.00416.58
7.4.60.0140.00316.52
7.4.50.0030.00316.49
7.4.40.0120.00416.52
7.4.30.0140.00616.37
7.4.00.0100.00715.04
7.3.330.0070.00012.94
7.3.320.0050.00013.16
7.3.310.0070.00016.20
7.3.300.0020.00516.24
7.3.290.0060.01016.29
7.3.280.0030.01216.24
7.3.270.0090.01317.40
7.3.260.0070.01716.27
7.3.250.0110.00716.38
7.3.240.0040.01616.41
7.3.230.0070.01116.39
7.3.210.0090.00916.43
7.3.200.0140.00619.39
7.3.190.0130.00316.29
7.3.180.0120.00416.63
7.3.170.0160.00716.27
7.3.160.0060.01016.42
7.3.120.0140.00414.94
7.3.110.0100.00714.71
7.3.100.0000.01114.56
7.3.90.0060.01014.84
7.3.80.0130.00414.70
7.3.70.0160.00014.51
7.3.60.0090.00314.77
7.3.50.0080.00814.50
7.3.40.0040.01114.62
7.3.30.0140.00014.88
7.3.20.0040.01516.52
7.3.10.0110.00616.42
7.3.00.0070.00816.47
7.2.330.0030.01416.47
7.2.320.0060.01216.60
7.2.310.0030.01816.57
7.2.300.0080.00916.73
7.2.290.0080.00916.22
7.2.240.0100.00014.54
7.2.230.0060.00914.71
7.2.220.0040.01515.20
7.2.210.0100.00415.21
7.2.200.0070.01114.61
7.2.190.0070.01114.72
7.2.180.0090.00914.98
7.2.170.0140.00015.13
7.2.160.0060.01215.03
7.2.150.0070.01416.80
7.2.140.0130.00417.05
7.2.130.0090.00716.92
7.2.120.0060.01016.73
7.2.110.0090.01116.90
7.2.100.0130.00716.76
7.2.90.0100.00516.98
7.2.80.0070.00916.98
7.2.70.0070.00916.88
7.2.60.0200.01016.78
7.2.50.0040.01016.95
7.2.40.0070.00816.84
7.2.30.0120.00616.78
7.2.20.0080.00816.82
7.2.10.0040.01516.84
7.2.00.0090.00717.72
7.1.330.0070.00415.84
7.1.320.0030.01115.57
7.1.310.0040.01115.80
7.1.300.0030.01415.50
7.1.290.0070.01015.72
7.1.280.0070.01015.81
7.1.270.0040.01515.85
7.1.260.0030.01315.39
7.1.250.0110.00415.89
7.1.200.0070.00715.44
7.1.100.0000.01217.98
7.1.70.0040.01116.84
7.1.60.0120.01219.40
7.1.50.0100.01416.90
7.1.00.0070.07722.31
7.0.200.0030.00914.88
7.0.140.0000.07722.20
7.0.60.0100.06319.85
7.0.50.0070.07717.80
7.0.40.0030.08020.39
7.0.30.0170.04720.18
7.0.20.0170.05020.17
7.0.10.0100.08020.16
7.0.00.0070.08719.99
5.6.280.0100.06721.10
5.6.210.0100.07320.73
5.6.200.0130.06018.09
5.6.190.0070.05020.57
5.6.180.0600.06320.45
5.6.170.0370.08020.52
5.6.160.0170.07720.39
5.6.150.0100.05318.18
5.6.140.0030.06018.15
5.6.130.0130.08018.21
5.6.120.0070.04321.04
5.6.110.0100.07720.98
5.6.100.0070.08021.00
5.6.90.0100.08321.02
5.6.80.0000.04320.36
5.5.350.0170.08320.42
5.5.340.0170.07017.96
5.5.330.0100.08020.19
5.5.320.0300.04320.21
5.5.310.0300.07720.10
5.5.300.0070.04017.98
5.5.290.0100.08718.01
5.5.280.0070.04020.73
5.5.270.0070.08320.64
5.5.260.0100.07720.86
5.5.250.0000.05020.68
5.5.240.0100.07020.20
5.4.450.0170.06019.25
5.4.440.0800.06019.49
5.4.430.0100.06319.45
5.4.420.0130.05319.45
5.4.410.0070.06018.99
5.4.400.0170.06318.72
5.4.390.0000.06318.74
5.4.380.0100.05718.74
5.4.370.0030.04318.68
5.4.360.0030.04318.55
5.4.350.0110.04312.00
5.4.340.0100.04512.00
5.4.320.0060.04112.48
5.4.310.0110.04512.49
5.4.300.0090.04612.48
5.4.290.0120.04312.48
5.4.280.0110.03512.38
5.4.270.0070.03912.38
5.4.260.0060.04412.38
5.4.250.0100.03612.38
5.4.240.0070.03812.38
5.4.230.0050.05112.37
5.4.220.0090.03812.37
5.4.210.0110.03912.37
5.4.200.0070.04412.37
5.4.190.0110.03812.37
5.4.180.0090.04312.37
5.4.170.0120.04312.38
5.4.160.0090.04612.38
5.4.150.0130.03612.37
5.4.140.0090.04612.05
5.4.130.0080.03912.04
5.4.120.0090.04212.00
5.4.110.0100.04311.99
5.4.100.0080.04611.99
5.4.90.0080.04212.00
5.4.80.0090.03612.00
5.4.70.0070.03512.00
5.4.60.0080.03811.99
5.4.50.0080.04411.99
5.4.40.0060.03611.98
5.4.30.0080.03811.98
5.4.20.0050.04011.98
5.4.10.0080.03411.98
5.4.00.0040.03811.46
5.3.290.0070.04012.80
5.3.280.0100.04012.71
5.3.270.0060.04812.72
5.3.260.0110.04012.72
5.3.250.0110.04112.72
5.3.240.0050.05112.72
5.3.230.0080.03812.71
5.3.220.0070.04012.68
5.3.210.0090.05112.68
5.3.200.0110.04212.68
5.3.190.0050.04312.68
5.3.180.0100.03512.67
5.3.170.0090.03912.66
5.3.160.0100.03712.68
5.3.150.0050.04012.67
5.3.140.0080.04012.66
5.3.130.0030.04312.66
5.3.120.0110.03812.66
5.3.110.0080.04412.66
5.3.100.0060.03912.12
5.3.90.0070.04112.08
5.3.80.0060.04212.07
5.3.70.0080.04312.08
5.3.60.0090.04512.06
5.3.50.0090.03612.00
5.3.40.0100.03612.00
5.3.30.0070.03411.95
5.3.20.0040.04211.73
5.3.10.0060.03711.70
5.3.00.0120.03511.68
5.2.170.0040.0389.19
5.2.160.0080.0289.18
5.2.150.0050.0349.18
5.2.140.0080.0289.18
5.2.130.0050.0299.14
5.2.120.0110.0279.14
5.2.110.0080.0329.15
5.2.100.0030.0329.14
5.2.90.0060.0389.14
5.2.80.0070.0299.14
5.2.70.0060.0319.14
5.2.60.0090.0319.09
5.2.50.0050.0379.06
5.2.40.0060.0299.04
5.2.30.0040.0369.01
5.2.20.0040.0399.00
5.2.10.0060.0288.92
5.2.00.0080.0308.78
5.1.60.0060.0318.07
5.1.50.0060.0248.07
5.1.40.0060.0248.05
5.1.30.0030.0318.39
5.1.20.0050.0268.42
5.1.10.0030.0268.14
5.1.00.0050.0258.14
5.0.50.0020.0226.62
5.0.40.0040.0196.48
5.0.30.0050.0306.29
5.0.20.0040.0196.26
5.0.10.0050.0196.24
5.0.00.0050.0296.23
4.4.90.0020.0164.77
4.4.80.0050.0234.75
4.4.70.0030.0204.75
4.4.60.0050.0174.75
4.4.50.0040.0204.77
4.4.40.0030.0254.71
4.4.30.0050.0184.76
4.4.20.0080.0204.84
4.4.10.0060.0134.85
4.4.00.0040.0284.76
4.3.110.0050.0264.67
4.3.100.0030.0204.66
4.3.90.0030.0204.63
4.3.80.0060.0334.59
4.3.70.0030.0194.63
4.3.60.0030.0194.63
4.3.50.0030.0154.63
4.3.40.0040.0314.54
4.3.30.0030.0223.28
4.3.20.0030.0233.26
4.3.10.0040.0183.21
4.3.00.0070.0206.80

preferences:
39.2 ms | 400 KiB | 5 Q