3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str1 = 'namae'; $str2 = null; echo implode(' ', array($str1, $str2));

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)
8.3.40.0040.01118.71
8.3.30.0070.00719.10
8.3.20.0070.00020.04
8.3.10.0050.00323.52
8.3.00.0030.00519.25
8.2.170.0000.01422.96
8.2.160.0140.00020.23
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0150.00326.16
8.2.120.0070.00022.13
8.2.110.0170.00319.21
8.2.100.0040.00717.91
8.2.90.0040.00419.36
8.2.80.0080.00017.97
8.2.70.0040.00417.50
8.2.60.0080.00017.80
8.2.50.0040.00418.10
8.2.40.0000.00722.22
8.2.30.0040.00421.04
8.2.20.0000.00817.74
8.2.10.0040.00418.05
8.2.00.0000.01017.54
8.1.270.0080.00022.14
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0130.01023.88
8.1.230.0080.00317.53
8.1.220.0050.00317.79
8.1.210.0090.00018.77
8.1.200.0040.00417.38
8.1.190.0060.00317.23
8.1.180.0000.00818.10
8.1.170.0040.00418.46
8.1.160.0030.00518.81
8.1.150.0040.00418.50
8.1.140.0040.00417.45
8.1.130.0070.00017.74
8.1.120.0030.00317.52
8.1.110.0050.00217.45
8.1.100.0100.00017.23
8.1.90.0070.00317.32
8.1.80.0060.00317.43
8.1.70.0030.00317.39
8.1.60.0080.00017.63
8.1.50.0030.00617.48
8.1.40.0040.00417.56
8.1.30.0050.00317.59
8.1.20.0050.00217.57
8.1.10.0040.00417.51
8.1.00.0040.00417.32
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0000.00718.31
8.0.270.0030.00317.29
8.0.260.0060.00017.14
8.0.250.0070.00016.91
8.0.240.0030.00317.01
8.0.230.0000.00716.85
8.0.220.0000.00716.86
8.0.210.0000.00616.75
8.0.200.0030.00316.85
8.0.190.0050.00216.81
8.0.180.0090.00016.89
8.0.170.0030.00616.94
8.0.160.0070.00016.95
8.0.150.0000.00816.78
8.0.140.0040.00416.82
8.0.130.0000.00713.28
8.0.120.0030.00516.86
8.0.110.0000.00816.71
8.0.100.0000.00716.96
8.0.90.0050.00316.94
8.0.80.0140.00416.89
8.0.70.0080.00016.68
8.0.60.0000.00716.71
8.0.50.0070.00016.75
8.0.30.0090.01416.84
8.0.20.0120.00917.40
8.0.10.0040.00416.99
8.0.00.0100.01016.66
7.4.330.0050.00015.00
7.4.320.0060.00016.54
7.4.300.0000.00616.59
7.4.290.0000.00716.47
7.4.280.0000.00816.45
7.4.270.0030.00316.62
7.4.260.0080.00016.56
7.4.250.0000.00816.59
7.4.240.0040.00416.49
7.4.230.0030.00316.60
7.4.220.0140.00716.61
7.4.210.0060.00816.53
7.4.200.0000.00716.46
7.4.190.0040.00416.48
7.4.160.0070.01016.55
7.4.150.0160.00617.40
7.4.140.0080.00917.86
7.4.130.0100.00716.51
7.4.120.0090.00916.40
7.4.110.0030.01516.44
7.4.100.0100.01016.63
7.4.90.0170.00016.61
7.4.80.0070.01019.39
7.4.70.0130.00316.36
7.4.60.0090.00616.64
7.4.50.0050.00316.55
7.4.40.0070.00722.77
7.4.30.0000.01716.65
7.4.00.0080.00814.99
7.3.330.0000.00513.07
7.3.320.0030.00313.08
7.3.310.0080.00016.03
7.3.300.0040.00416.14
7.3.290.0090.00616.28
7.3.280.0050.01316.18
7.3.270.0160.00017.40
7.3.260.0090.00916.46
7.3.250.0070.01316.33
7.3.240.0140.00316.13
7.3.230.0070.01016.50
7.3.210.0140.00616.30
7.3.200.0120.01219.39
7.3.190.0060.01016.30
7.3.180.0150.00616.28
7.3.170.0140.00816.27
7.3.160.0040.01516.29
7.3.120.0060.00914.62
7.3.10.0030.01016.46
7.3.00.0090.00316.57
7.2.330.0130.00316.59
7.2.320.0140.00316.22
7.2.310.0070.01016.68
7.2.300.0060.00916.61
7.2.290.0070.01416.48
7.2.130.0030.01316.93
7.2.120.0110.00316.88
7.2.110.0000.01216.89
7.2.100.0000.01316.71
7.2.90.0040.00816.83
7.2.80.0030.00716.56
7.2.70.0000.01516.76
7.2.60.0030.00816.93
7.2.50.0100.00016.51
7.2.40.0070.00716.93
7.2.30.0030.01016.75
7.2.20.0000.01016.87
7.2.10.0080.00616.73
7.2.00.0060.00817.98
7.1.250.0070.00715.42
7.1.100.0000.01517.88
7.1.70.0070.00717.21
7.1.60.0100.01019.46
7.1.50.0070.01016.66
7.1.00.0100.07022.48
7.0.200.0000.00716.72
7.0.140.0070.07022.00
7.0.60.0000.08719.77
7.0.50.0000.04317.80
7.0.40.0100.06020.23
7.0.30.0570.06720.02
7.0.20.0270.07720.30
7.0.10.0070.05320.00
7.0.00.0170.05020.03
5.6.280.0070.07020.98
5.6.210.0000.08020.52
5.6.200.0000.08718.17
5.6.190.0100.08320.60
5.6.180.3430.04020.60
5.6.170.0370.07020.37
5.6.160.0070.08320.47
5.6.150.0070.08318.08
5.6.140.0070.05018.14
5.6.130.0030.05718.18
5.6.120.0070.07320.96
5.6.110.0130.07720.97
5.6.100.0100.06320.95
5.6.90.0230.06720.98
5.6.80.0100.07720.46
5.6.70.4570.03320.39
5.5.350.0070.07720.45
5.5.340.0200.06718.02
5.5.330.0130.07020.57
5.5.320.0230.08720.28
5.5.310.0270.07320.13
5.5.300.0100.07017.92
5.5.290.0030.04018.00
5.5.280.0030.04320.80
5.5.270.0100.08320.61
5.5.260.0200.07320.76
5.5.250.0070.07020.68
5.5.240.0370.05720.23
5.4.450.0770.05719.45
5.4.440.0970.05719.41
5.4.430.0870.05719.44
5.4.420.0630.00019.52
5.4.410.0170.06018.68
5.4.400.0170.05718.65
5.4.390.0200.05018.63
5.4.380.0170.05018.49
5.4.370.0400.05318.52
5.4.360.0330.04318.43
5.4.350.0040.04011.97
5.4.340.0060.03911.96
5.4.320.0070.03612.45
5.4.310.0060.03712.45
5.4.300.0050.04212.45
5.4.290.0060.03712.43
5.4.280.0080.03312.33
5.4.270.0080.03312.33
5.4.260.0080.03612.33
5.4.250.0060.03712.33
5.4.240.0040.03712.33
5.4.230.0060.04012.32
5.4.220.0040.03812.32
5.4.210.0080.05112.32
5.4.200.0100.05212.32
5.4.190.0060.04912.32
5.4.180.0070.03612.32
5.4.170.0060.03712.33
5.4.160.0070.03812.33
5.4.150.0030.03912.32
5.4.140.0040.04012.01
5.4.130.0060.03712.00
5.4.120.0090.03811.95
5.4.110.0050.03711.95
5.4.100.0040.03811.95
5.4.90.0050.03711.95
5.4.80.0060.03611.95
5.4.70.0050.03411.94
5.4.60.0060.03311.95
5.4.50.0050.03611.94
5.4.40.0080.03411.93
5.4.30.0050.03511.93
5.4.20.0040.03611.93
5.4.10.0020.03811.93
5.4.00.0080.03311.41
5.3.290.0070.03912.80
5.3.280.0080.03512.71
5.3.270.0060.03912.73
5.3.260.0070.03712.72
5.3.250.0070.03612.72
5.3.240.0090.03512.72
5.3.230.0030.04112.71
5.3.220.0070.03712.68
5.3.210.0050.04012.68
5.3.200.0070.03612.68
5.3.190.0040.03912.68
5.3.180.0070.03912.68
5.3.170.0050.03712.67
5.3.160.0080.03512.67
5.3.150.0040.04412.68
5.3.140.0090.03712.66
5.3.130.0060.04212.65
5.3.120.0030.04412.66
5.3.110.0030.04212.65
5.3.100.0050.03912.11
5.3.90.0040.04112.08
5.3.80.0020.03912.08
5.3.70.0030.04212.07
5.3.60.0050.03812.06
5.3.50.0070.03612.00
5.3.40.0070.03612.00
5.3.30.0070.03511.94
5.3.20.0030.03811.72
5.3.10.0050.03611.69
5.3.00.0070.03411.67
5.2.170.0050.0309.17
5.2.160.0070.0269.18
5.2.150.0060.0299.18
5.2.140.0080.0279.18
5.2.130.0040.0299.13
5.2.120.0050.0299.13
5.2.110.0040.0309.14
5.2.100.0040.0299.14
5.2.90.0090.0259.14
5.2.80.0050.0319.13
5.2.70.0030.0329.13
5.2.60.0040.0309.08
5.2.50.0040.0349.05
5.2.40.0030.0309.03
5.2.30.0050.0299.00
5.2.20.0090.0248.99
5.2.10.0040.0298.91
5.2.00.0010.0338.77
5.1.60.0030.0248.06
5.1.50.0010.0278.06
5.1.40.0040.0248.04
5.1.30.0070.0238.39
5.1.20.0060.0248.41
5.1.10.0060.0248.13
5.1.00.0060.0238.13
5.0.50.0020.0216.62
5.0.40.0020.0216.47
5.0.30.0060.0296.29
5.0.20.0020.0216.25
5.0.10.0000.0236.23
5.0.00.0030.0316.23
4.4.90.0040.0134.78
4.4.80.0030.0234.76
4.4.70.0040.0164.75
4.4.60.0030.0174.76
4.4.50.0040.0234.77
4.4.40.0020.0254.71
4.4.30.0030.0154.76
4.4.20.0040.0144.85
4.4.10.0020.0164.85
4.4.00.0020.0264.76
4.3.110.0020.0164.67
4.3.100.0030.0154.67
4.3.90.0060.0124.64
4.3.80.0030.0244.58
4.3.70.0020.0154.63
4.3.60.0040.0134.63
4.3.50.0030.0154.62
4.3.40.0020.0254.54
4.3.30.0020.0183.28
4.3.20.0010.0163.26
4.3.10.0010.0163.22
4.3.00.0030.0237.03

preferences:
46.5 ms | 400 KiB | 5 Q