3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['a' => 1, 'b' => 2]; $arr += ['a' => 3] + ['b' => 4]; print_r($arr); $arr = ['a' => 1, 'b' => 2]; array_merge($arr, ['a' => 3], ['b' => 4]); print_r($arr);

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)
8.3.60.0030.01316.63
8.3.50.0130.00722.00
8.3.40.0140.00618.54
8.3.30.0170.00318.95
8.3.20.0050.00320.36
8.3.10.0060.00323.48
8.3.00.0000.00820.46
8.2.180.0100.01016.38
8.2.170.0140.00022.96
8.2.160.0030.01022.21
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00822.32
8.2.110.0030.00622.20
8.2.100.0110.00017.91
8.2.90.0030.00519.22
8.2.80.0040.00417.97
8.2.70.0100.00017.63
8.2.60.0030.00517.80
8.2.50.0030.00618.07
8.2.40.0040.00419.34
8.2.30.0000.00818.11
8.2.20.0070.00017.64
8.2.10.0070.00017.51
8.2.00.0000.00817.60
8.1.280.0100.00325.92
8.1.270.0050.00324.02
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00723.81
8.1.230.0090.00319.05
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0000.01017.22
8.1.190.0080.00017.40
8.1.180.0040.00418.10
8.1.170.0040.00418.38
8.1.160.0030.00521.90
8.1.150.0040.00418.55
8.1.140.0040.00417.25
8.1.130.0000.00717.71
8.1.120.0040.00417.45
8.1.110.0040.00417.30
8.1.100.0000.00717.44
8.1.90.0020.00517.26
8.1.80.0030.00317.26
8.1.70.0070.00017.26
8.1.60.0020.00517.54
8.1.50.0000.00917.44
8.1.40.0000.00817.42
8.1.30.0040.00417.52
8.1.20.0040.00417.46
8.1.10.0000.00717.36
8.1.00.0030.00517.30
8.0.300.0050.00318.77
8.0.290.0000.00716.93
8.0.280.0000.00718.37
8.0.270.0040.00417.11
8.0.260.0060.00016.72
8.0.250.0000.00616.83
8.0.240.0030.00616.87
8.0.230.0070.00016.93
8.0.220.0000.00616.88
8.0.210.0050.00216.84
8.0.200.0070.00016.96
8.0.190.0000.00816.96
8.0.180.0040.00416.91
8.0.170.0070.00016.92
8.0.160.0060.00316.84
8.0.150.0070.00016.83
8.0.140.0080.00016.87
8.0.130.0030.00313.26
8.0.120.0040.00416.83
8.0.110.0000.00816.79
8.0.100.0030.00616.86
8.0.90.0000.00716.88
8.0.80.0100.00716.82
8.0.70.0040.00416.89
8.0.60.0000.00816.87
8.0.50.0050.00216.69
8.0.30.0110.00616.88
8.0.20.0090.00917.40
8.0.10.0040.00316.83
8.0.00.0080.01216.70
7.4.330.0050.00015.00
7.4.320.0070.00016.54
7.4.300.0030.00316.50
7.4.290.0000.00616.32
7.4.280.0070.00016.33
7.4.270.0030.00316.38
7.4.260.0000.00816.46
7.4.250.0070.00016.52
7.4.240.0050.00216.48
7.4.230.0070.00016.52
7.4.220.0060.01216.59
7.4.210.0070.00916.49
7.4.200.0030.00316.45
7.4.190.0070.00016.41
7.4.160.0090.00616.58
7.4.150.0100.00717.40
7.4.140.0140.00717.86
7.4.130.0100.00716.42
7.4.120.0070.01016.36
7.4.110.0090.00916.30
7.4.100.0160.00316.45
7.4.90.0150.01516.48
7.4.80.0100.00716.32
7.4.70.0060.01016.35
7.4.60.0040.01216.36
7.4.50.0030.00316.39
7.4.40.0040.01122.77
7.4.30.0100.00616.42
7.4.00.0060.00614.81
7.3.330.0000.00513.05
7.3.320.0000.00512.81
7.3.310.0050.00216.08
7.3.300.0030.00316.13
7.3.290.0050.00916.27
7.3.280.0080.01216.15
7.3.270.0130.00617.40
7.3.260.0000.01716.49
7.3.250.0050.01316.26
7.3.240.0130.00616.16
7.3.230.0100.00616.39
7.3.210.0120.01216.52
7.3.200.0100.01019.39
7.3.190.0160.00316.27
7.3.180.0100.00716.28
7.3.170.0070.01716.27
7.3.160.0130.00316.26
7.3.120.0130.00314.61
7.2.330.0060.01216.25
7.2.320.0090.00916.55
7.2.310.0070.01116.31
7.2.300.0100.00716.50
7.2.290.0140.00316.42
7.2.80.0050.00516.41
7.2.60.0090.00316.54
7.2.00.0030.01019.19
7.1.200.0030.00615.65
7.1.100.0060.00918.25
7.1.70.0030.00516.80
7.1.60.0030.01619.29
7.1.50.0140.02134.80
7.1.00.0000.08022.32
7.0.200.0000.00716.63
7.0.140.0030.07022.18
7.0.60.0130.08019.94
7.0.50.0130.07317.88
7.0.40.0070.08720.00
7.0.30.0270.06720.16
7.0.20.0270.07320.34
7.0.10.0030.09020.19
7.0.00.0100.08020.18
5.6.280.0070.06720.77
5.6.210.0100.03720.51
5.6.200.0070.08718.13
5.6.190.0070.06320.59
5.6.180.0300.05720.60
5.6.170.0200.06020.48
5.6.160.0030.05320.33
5.6.150.0200.06018.22
5.6.140.0070.03718.12
5.6.130.0000.05318.21
5.6.120.0030.07721.02
5.6.110.0130.07721.01
5.6.100.0030.09020.96
5.6.90.0070.06321.07
5.6.80.0000.04320.37
5.6.70.4830.04720.50
5.5.350.0000.04020.39
5.5.340.0030.04017.91
5.5.330.0130.03320.11
5.5.320.0000.07020.29
5.5.310.0270.07020.29
5.5.300.0030.08017.91
5.5.290.0030.04317.90
5.5.280.0030.04720.87
5.5.270.0100.07320.88
5.5.260.0130.07720.79
5.5.250.0130.06720.57
5.5.240.0230.04020.03
5.4.450.0970.05319.24
5.4.440.0700.08719.25
5.4.430.0700.06319.58
5.4.420.0800.00019.36
5.4.410.0100.05318.94
5.4.400.0270.04318.83
5.4.390.0170.06318.72
5.4.380.0200.06018.73
5.4.370.0030.04718.64
5.4.360.0230.04018.55
5.4.350.0050.03511.97
5.4.340.0060.03611.97
5.4.320.0070.03512.45
5.4.310.0090.03412.45
5.4.300.0060.03612.46
5.4.290.0080.03512.45
5.4.280.0150.04412.32
5.4.270.0170.08412.32
5.4.260.0090.03712.32
5.4.250.0070.04212.32
5.4.240.0200.05012.32
5.4.230.0220.07912.31
5.4.220.0150.08912.32
5.4.210.0080.06412.32
5.4.200.0180.06512.32
5.4.190.0130.06112.31
5.4.180.0100.08512.31
5.4.170.0120.06312.32
5.4.160.0110.05112.32
5.4.150.0140.04412.32
5.4.140.0080.05612.00
5.4.130.0130.05611.99
5.4.120.0060.05611.95
5.4.110.0120.06011.94
5.4.100.0200.06411.95
5.4.90.0090.05611.94
5.4.80.0080.06711.94
5.4.70.0130.05011.93
5.4.60.0070.05411.94
5.4.50.0160.06411.93
5.4.40.0130.05511.93
5.4.30.0140.06111.92
5.4.20.0150.05611.92
5.4.10.0150.05011.92
5.4.00.0100.05111.41
5.3.290.0020.05312.80
5.3.280.0110.06812.71
5.3.270.0110.05312.72
5.3.260.0180.06912.72
5.3.250.0080.05012.72
5.3.240.0150.07512.72
5.3.230.0190.08512.71
5.3.220.0200.07712.68
5.3.210.0070.05812.68
5.3.200.0120.04012.68
5.3.190.0100.04312.68
5.3.180.0120.07212.67
5.3.170.0220.09412.67
5.3.160.0160.07512.68
5.3.150.0130.08812.68
5.3.140.0100.06112.66
5.3.130.0120.04812.66
5.3.120.0270.09512.66
5.3.110.0240.08812.66
5.3.100.0100.04612.12
5.3.90.0080.04812.08
5.3.80.0090.05212.07
5.3.70.0230.07012.08
5.3.60.0150.06512.06
5.3.50.0060.04212.00
5.3.40.0190.07412.00
5.3.30.0070.05411.94
5.3.20.0070.07211.70
5.3.10.0100.04211.67
5.3.00.0070.04611.66
5.2.170.0040.0419.14
5.2.160.0030.0389.15
5.2.150.0060.0339.15
5.2.140.0060.0339.14
5.2.130.0040.0359.11
5.2.120.0060.0319.10
5.2.110.0080.0379.11
5.2.100.0180.0799.11
5.2.90.0110.0719.11
5.2.80.0080.0389.11
5.2.70.0250.0719.11
5.2.60.0130.0559.05
5.2.50.0100.0419.03
5.2.40.0090.0489.00
5.2.30.0100.0438.99
5.2.20.0090.0438.97
5.2.10.0140.0738.90
5.2.00.0140.0358.76
5.1.60.0120.0528.04
5.1.50.0200.0368.04
5.1.40.0070.0348.03
5.1.30.0120.0348.38
5.1.20.0130.0438.40
5.1.10.0060.0378.12
5.1.00.0070.0388.12
5.0.50.0070.0286.59
5.0.40.0070.0296.46
5.0.30.0060.0586.27
5.0.20.0080.0256.24
5.0.10.0100.0426.22
5.0.00.0060.0536.20
4.4.90.0080.0244.78
4.4.80.0090.0194.75
4.4.70.0050.0234.76
4.4.60.0050.0234.76
4.4.50.0090.0204.77
4.4.40.0050.0364.71
4.4.30.0050.0244.75
4.4.20.0070.0424.84
4.4.10.0100.0324.85
4.4.00.0080.0784.76
4.3.110.0140.0304.66
4.3.100.0060.0254.66
4.3.90.0070.0384.64
4.3.80.0100.0554.58
4.3.70.0070.0384.63
4.3.60.0090.0254.63
4.3.50.0140.0764.63
4.3.40.0130.0514.54
4.3.30.0030.0303.27
4.3.20.0080.0383.25
4.3.10.0080.0323.21
4.3.00.0200.0176.81

preferences:
45.15 ms | 401 KiB | 5 Q