3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=array("a"=>1,"b"=>1,"c"=>1,"e"=>1); $b=array("a"=>5,"c"=>7,"e"=>8); print_r(array_combine(array_keys($a),array_values($b)));

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)
8.3.60.0110.00418.18
8.3.50.0120.00721.91
8.3.40.0150.00018.82
8.3.30.0110.00418.96
8.3.20.0040.00420.12
8.3.10.0000.00822.08
8.3.00.0040.00422.43
8.2.180.0130.01016.88
8.2.170.0130.00722.96
8.2.160.0070.00720.79
8.2.150.0000.00824.18
8.2.140.0030.00524.66
8.2.130.0050.00226.16
8.2.120.0050.00319.23
8.2.110.0030.00622.25
8.2.100.0110.00419.57
8.2.90.0020.00519.08
8.2.80.0030.00619.62
8.2.70.0110.00417.63
8.2.60.0080.00017.68
8.2.50.0040.00418.07
8.2.40.0060.00318.16
8.2.30.0030.00517.85
8.2.20.0020.00517.53
8.2.10.0050.00217.81
8.2.00.0040.00417.73
8.1.280.0000.02125.92
8.1.270.0080.00022.22
8.1.260.0100.00026.35
8.1.250.0050.00328.09
8.1.240.0060.00323.92
8.1.230.0040.00718.85
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0040.00417.52
8.1.180.0060.00318.10
8.1.170.0040.00418.54
8.1.160.0040.00421.94
8.1.150.0060.00318.52
8.1.140.0070.00017.27
8.1.130.0030.00317.82
8.1.120.0030.00317.22
8.1.110.0000.00717.26
8.1.100.0000.00817.40
8.1.90.0030.00317.22
8.1.80.0000.00817.38
8.1.70.0030.00317.38
8.1.60.0000.00917.52
8.1.50.0080.00017.39
8.1.40.0000.00817.52
8.1.30.0000.00717.52
8.1.20.0030.00517.58
8.1.10.0000.00917.42
8.1.00.0000.00817.49
8.0.300.0000.00718.77
8.0.290.0030.00317.16
8.0.280.0040.00418.36
8.0.270.0030.00317.17
8.0.260.0000.00816.85
8.0.250.0070.00016.91
8.0.240.0040.00416.92
8.0.230.0030.00616.95
8.0.220.0000.00716.87
8.0.210.0000.00816.94
8.0.200.0030.00316.82
8.0.190.0000.00716.89
8.0.180.0070.00016.96
8.0.170.0040.00416.91
8.0.160.0050.00316.86
8.0.150.0030.00316.80
8.0.140.0070.00016.82
8.0.130.0050.00013.23
8.0.120.0080.00016.92
8.0.110.0000.00716.76
8.0.100.0070.00016.82
8.0.90.0040.00417.00
8.0.80.0030.01716.84
8.0.70.0000.00716.98
8.0.60.0050.00216.86
8.0.50.0040.00416.79
8.0.30.0170.00517.01
8.0.20.0130.00817.40
8.0.10.0050.00216.96
8.0.00.0090.01116.65
7.4.330.0050.00015.02
7.4.320.0030.00316.57
7.4.300.0030.00316.43
7.4.290.0000.00716.41
7.4.280.0030.00316.49
7.4.270.0030.00316.52
7.4.260.0060.00316.50
7.4.250.0040.00416.34
7.4.240.0020.00516.45
7.4.230.0030.00316.42
7.4.220.0070.01116.55
7.4.210.0100.00916.52
7.4.200.0070.00016.55
7.4.190.0070.00016.66
7.4.160.0150.00616.32
7.4.150.0090.00917.40
7.4.140.0100.00717.86
7.4.130.0060.01116.48
7.4.120.0080.00916.48
7.4.110.0070.01316.16
7.4.100.0090.01116.42
7.4.90.0090.00916.45
7.4.80.0100.01319.39
7.4.70.0090.01216.51
7.4.60.0060.01216.53
7.4.50.0000.00916.17
7.4.40.0090.00322.77
7.4.30.0080.00816.54
7.4.00.0100.00315.16
7.3.330.0000.00513.09
7.3.320.0050.00013.02
7.3.310.0040.00416.12
7.3.300.0000.00716.18
7.3.290.0100.00616.22
7.3.280.0090.00816.17
7.3.270.0100.00717.40
7.3.260.0170.00616.49
7.3.250.0070.01016.22
7.3.240.0120.00616.23
7.3.230.0030.01316.41
7.3.210.0170.00016.24
7.3.200.0110.00819.39
7.3.190.0120.00616.24
7.3.180.0110.00416.32
7.3.170.0070.00816.36
7.3.160.0090.01216.40
7.3.120.0030.01214.95
7.3.10.0070.00416.28
7.3.00.0060.00615.93
7.2.330.0100.00716.37
7.2.320.0090.00916.13
7.2.310.0130.01016.30
7.2.300.0100.01016.07
7.2.290.0130.00416.17
7.2.130.0030.01016.27
7.2.120.0120.00616.45
7.2.110.0040.01116.44
7.2.100.0060.00916.55
7.2.90.0150.00616.67
7.2.80.0110.01116.25
7.2.70.0110.01416.57
7.2.60.0120.00516.49
7.2.50.0100.01416.37
7.2.40.0040.01716.45
7.2.30.0190.00716.25
7.2.20.0130.00816.56
7.2.10.0100.01016.33
7.2.00.0100.00717.65
7.1.250.0080.00815.45
7.1.200.0030.01015.49
7.1.100.0030.01417.91
7.1.70.0070.00316.99
7.1.60.0110.01519.82
7.1.50.0070.01416.94
7.1.00.0070.07322.31
7.0.200.0000.00916.69
7.0.140.0070.07022.15
7.0.60.0070.08019.93
7.0.50.0000.04717.81
7.0.40.0130.07720.27
7.0.30.0300.07020.21
7.0.20.0330.07020.09
7.0.10.0370.08320.09
7.0.00.0100.08320.08
5.6.280.0070.06720.88
5.6.210.0100.07720.61
5.6.200.0170.08018.20
5.6.190.0030.04320.29
5.6.180.2570.04320.41
5.6.170.0300.07320.40
5.6.160.0070.04020.42
5.6.150.0070.07018.11
5.6.140.0070.08018.21
5.6.130.0100.05318.10
5.6.120.0030.04321.11
5.6.110.0030.07720.98
5.6.100.0030.04021.13
5.6.90.0000.04721.10
5.6.80.0170.06320.40
5.6.70.0300.07020.38
5.5.350.0000.08320.36
5.5.340.0030.03718.02
5.5.330.0170.07320.25
5.5.320.0300.07020.29
5.5.310.0270.07320.16
5.5.300.0000.06317.95
5.5.290.0130.07317.88
5.5.280.0130.07720.87
5.5.270.0100.08320.89
5.5.260.0170.05720.87
5.5.250.0130.07320.70
5.5.240.0030.08320.28
5.4.450.0770.05719.10
5.4.440.0530.03319.42
5.4.430.1230.00019.57
5.4.420.1370.00019.32
5.4.410.0170.07018.80
5.4.400.0170.04718.53
5.4.390.0070.05718.66
5.4.380.0270.05318.40
5.4.370.0200.05018.77
5.4.360.0130.05318.53
5.4.350.0200.05318.55
5.4.340.0230.04318.68
5.4.320.0060.03712.45
5.4.310.0040.04012.45
5.4.300.0070.05112.45
5.4.290.0100.04112.45
5.4.280.0060.05212.35
5.4.270.0060.04212.32
5.4.260.0060.04212.32
5.4.250.0080.04012.32
5.4.240.0060.04912.32
5.4.230.0080.04812.31
5.4.220.0050.03912.31
5.4.210.0080.03512.31
5.4.200.0090.03812.31
5.4.190.0070.03812.30
5.4.180.0040.04012.31
5.4.170.0050.03812.32
5.4.160.0070.04312.31
5.4.150.0080.04812.31
5.4.140.0040.05411.99
5.4.130.0060.04611.98
5.4.120.0100.04211.93
5.4.110.0120.04211.93
5.4.100.0080.04611.93
5.4.90.0090.04711.93
5.4.80.0080.04411.93
5.4.70.0070.03811.93
5.4.60.0050.04711.93
5.4.50.0140.04511.93
5.4.40.0100.04511.92
5.4.30.0040.04911.92
5.4.20.0110.04711.92
5.4.10.0110.04311.91
5.4.00.0050.05211.40
5.3.290.0080.03712.80
5.3.280.0110.05012.71
5.3.270.0140.04912.72
5.3.260.0110.05012.72
5.3.250.0070.05212.72
5.3.240.0120.06312.72
5.3.230.0070.04512.70
5.3.220.0040.04412.68
5.3.210.0090.03812.68
5.3.200.0060.03912.68
5.3.190.0120.04512.68
5.3.180.0070.04812.68
5.3.170.0070.03812.67
5.3.160.0040.04312.68
5.3.150.0090.04212.67
5.3.140.0060.04312.66
5.3.130.0060.05212.66
5.3.120.0130.04712.66
5.3.110.0100.05112.65
5.3.100.0100.04812.11
5.3.90.0090.04612.08
5.3.80.0090.05012.07
5.3.70.0120.04412.08
5.3.60.0100.04612.06
5.3.50.0100.04712.00
5.3.40.0080.04412.00
5.3.30.0090.03711.94
5.3.20.0070.04011.70
5.3.10.0120.04311.66
5.3.00.0070.04911.65
5.2.170.0070.0399.15
5.2.160.0070.0389.15
5.2.150.0100.0379.14
5.2.140.0070.0409.15
5.2.130.0100.0369.11
5.2.120.0080.0379.11
5.2.110.0050.0399.11
5.2.100.0110.0339.11
5.2.90.0050.0409.11
5.2.80.0070.0429.10
5.2.70.0080.0509.10
5.2.60.0060.0449.06
5.2.50.0060.0409.03
5.2.40.0080.0369.00
5.2.30.0070.0408.98
5.2.20.0130.0688.97
5.2.10.0080.0358.89
5.2.00.0050.0378.75
5.1.60.0060.0308.04
5.1.50.0080.0328.04
5.1.40.0050.0268.02
5.1.30.0060.0258.36
5.1.20.0060.0268.39
5.1.10.0060.0318.12
5.1.00.0050.0308.12
5.0.50.0100.0206.59
5.0.40.0050.0216.45
5.0.30.0060.0396.27
5.0.20.0030.0216.24
5.0.10.0050.0206.21
5.0.00.0030.0336.21
4.4.90.0020.0164.78
4.4.80.0010.0174.75
4.4.70.0020.0164.75
4.4.60.0010.0174.76
4.4.50.0000.0184.77
4.4.40.0040.0244.71
4.4.30.0010.0174.76
4.4.20.0050.0134.84
4.4.10.0050.0134.84
4.4.00.0060.0234.76
4.3.110.0020.0164.67
4.3.100.0040.0134.66
4.3.90.0020.0154.63
4.3.80.0050.0224.58
4.3.70.0020.0164.63
4.3.60.0040.0134.63
4.3.50.0030.0154.63
4.3.40.0030.0244.54
4.3.30.0040.0153.27
4.3.20.0010.0183.26
4.3.10.0020.0163.21
4.3.00.0000.01313.28

preferences:
35.18 ms | 401 KiB | 5 Q