3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = [ 'a' => 'a' ]; $array2 = [ 'a' => 'a' ]; var_dump(array_merge($array1, $array2));

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)
8.3.60.0110.00716.75
8.3.50.0120.00318.06
8.3.40.0040.01118.67
8.3.30.0170.00318.95
8.3.20.0160.00020.04
8.3.10.0160.00321.77
8.3.00.0050.00220.96
8.2.180.0080.00816.38
8.2.170.0140.00022.96
8.2.160.0160.00321.95
8.2.150.0110.00724.18
8.2.140.0120.00624.66
8.2.130.0030.00626.16
8.2.120.0030.00718.01
8.2.110.0100.00019.23
8.2.100.0040.00817.66
8.2.90.0000.00817.75
8.2.80.0060.00618.65
8.2.70.0040.00417.50
8.2.60.0000.00817.38
8.2.50.0000.00817.63
8.2.40.0040.00419.88
8.2.30.0040.00718.05
8.2.20.0070.00017.48
8.2.10.0040.00418.04
8.2.00.0000.00817.48
8.1.280.0090.01225.92
8.1.270.0080.00020.37
8.1.260.0060.01326.35
8.1.250.0070.01128.09
8.1.240.0090.00020.74
8.1.230.0040.00821.04
8.1.220.0050.00318.48
8.1.210.0030.00518.77
8.1.200.0040.00417.00
8.1.190.0090.00017.22
8.1.180.0080.00021.99
8.1.170.0000.00818.46
8.1.160.0040.00421.82
8.1.150.0040.00418.83
8.1.140.0000.00919.10
8.1.130.0070.00017.86
8.1.120.0040.00417.44
8.1.110.0000.00717.28
8.1.100.0030.00517.41
8.1.90.0000.00717.27
8.1.80.0030.00517.27
8.1.70.0000.00717.30
8.1.60.0030.00617.43
8.1.50.0040.00417.43
8.1.40.0040.00417.44
8.1.30.0040.00417.59
8.1.20.0030.00617.60
8.1.10.0040.00417.42
8.1.00.0000.00917.38
8.0.300.0030.00618.77
8.0.290.0030.00616.63
8.0.280.0000.00718.31
8.0.270.0070.00017.18
8.0.260.0080.00017.23
8.0.250.0000.00716.79
8.0.240.0030.00616.90
8.0.230.0040.00416.89
8.0.220.0070.00016.71
8.0.210.0000.00716.84
8.0.200.0060.00016.92
8.0.190.0050.00316.95
8.0.180.0040.00416.79
8.0.170.0030.00516.92
8.0.160.0070.00016.78
8.0.150.0030.00316.72
8.0.140.0040.00416.66
8.0.130.0060.00013.22
8.0.120.0040.00416.68
8.0.110.0040.00416.66
8.0.100.0070.00016.91
8.0.90.0080.00016.61
8.0.80.0080.00816.81
8.0.70.0050.00216.71
8.0.60.0050.00316.82
8.0.50.0080.00016.80
8.0.30.0090.01016.88
8.0.20.0090.00917.40
8.0.10.0080.00016.82
8.0.00.0090.01116.67
7.4.330.0020.00215.03
7.4.320.0000.00616.41
7.4.300.0070.00016.42
7.4.290.0020.00516.57
7.4.280.0080.00016.57
7.4.270.0000.00716.45
7.4.260.0000.00716.35
7.4.250.0040.00416.40
7.4.240.0030.00416.39
7.4.230.0060.00016.34
7.4.220.0110.00716.49
7.4.210.0040.01216.57
7.4.200.0030.00316.36
7.4.160.0090.00616.51
7.4.150.0090.00917.40
7.4.140.0130.00617.86
7.4.130.0090.01016.49
7.4.120.0050.01116.32
7.4.110.0030.01316.32
7.4.100.0100.00716.24
7.4.90.0060.01816.48
7.4.80.0120.00616.38
7.4.70.0080.00816.17
7.4.60.0130.00616.33
7.4.50.0000.00416.29
7.4.40.0090.00716.39
7.4.30.0070.01116.36
7.4.00.0070.01014.96
7.3.330.0020.00212.92
7.3.320.0110.00012.98
7.3.310.0030.00316.27
7.3.300.0060.00016.18
7.3.290.0030.01416.15
7.3.280.0050.01116.12
7.3.270.0200.00317.40
7.3.260.0100.00616.38
7.3.250.0070.01016.44
7.3.240.0110.00716.02
7.3.230.0110.00716.39
7.3.210.0100.00716.00
7.3.200.0110.00819.39
7.3.190.0100.00716.14
7.3.180.0030.01616.34
7.3.170.0130.00616.27
7.3.160.0100.01016.18
7.2.330.0100.01216.54
7.2.320.0110.00816.52
7.2.310.0100.01416.53
7.2.300.0090.00816.36
7.2.290.0070.01116.42
7.2.60.0030.00916.80
7.2.00.0150.00418.98
7.1.100.0070.01017.93
7.1.70.0030.00716.80
7.1.60.0070.01319.46
7.1.50.0150.00916.48
7.1.00.0030.07322.48
7.0.200.0070.00314.58
7.0.140.0070.06022.09
7.0.60.0100.06719.85
7.0.50.0130.06317.82
7.0.40.0030.06719.98
7.0.30.0270.06720.33
7.0.20.0230.06320.04
7.0.10.0070.07720.00
7.0.00.0070.05720.18
5.6.280.0070.07021.03
5.6.210.0170.07720.76
5.6.200.0070.08718.21
5.6.190.0070.05320.27
5.6.180.0430.03720.69
5.6.170.0270.04020.50
5.6.160.0130.06320.37
5.6.150.0070.08018.12
5.6.140.0070.08018.14
5.6.130.0100.07718.09
5.6.120.0130.03321.09
5.6.110.0130.08021.02
5.6.100.0100.07720.96
5.6.90.0130.07021.02
5.6.80.0070.06320.36
5.5.350.0230.06320.37
5.5.340.0070.03717.98
5.5.330.0070.06020.28
5.5.320.0000.04320.18
5.5.310.0170.08020.14
5.5.300.0100.07317.97
5.5.290.0170.06717.96
5.5.280.0030.07320.77
5.5.270.0030.05320.86
5.5.260.0100.07720.86
5.5.250.0200.07020.57
5.5.240.0030.06020.06
5.4.450.0700.05319.32
5.4.440.0230.06319.54
5.4.430.0200.05319.52
5.4.420.0370.05319.19
5.4.410.5400.05319.30
5.4.400.1030.04719.15
5.4.390.0270.04318.57
5.4.380.0270.05018.66
5.4.370.0270.05018.60
5.4.360.0170.05318.79
5.4.350.0270.05018.72
5.4.340.0230.05018.57
5.4.320.0130.06018.68
5.4.310.0300.04018.56
5.4.300.0230.05018.62
5.4.290.0230.04718.74
5.4.280.0230.05018.56
5.4.270.0370.03718.73
5.4.260.0400.05318.48
5.4.250.0300.06718.79
5.4.240.0230.07318.55
5.4.230.0270.06718.43
5.4.220.0200.07718.63
5.4.210.0230.07318.63
5.4.200.0200.06716.73
5.4.190.0230.05018.64
5.4.180.0230.05018.55
5.4.170.0200.07718.47
5.4.160.0270.05318.47
5.4.150.0200.05018.64
5.4.140.0070.08716.30
5.4.130.0270.06316.25
5.4.120.0230.07016.30
5.4.110.0270.06016.16
5.4.100.0100.08016.22
5.4.90.0300.04316.31
5.4.80.0200.05016.33
5.4.70.0200.05316.02
5.4.60.0270.06016.19
5.4.50.0230.04716.13
5.4.40.0200.04716.32
5.4.30.0200.05716.22
5.4.20.0230.05016.23
5.4.10.0200.04716.04
5.4.00.0100.05715.79
5.3.290.0130.06714.76
5.3.280.0130.06014.52
5.3.270.0230.04714.55
5.3.260.0170.05714.60
5.3.250.0130.05714.66
5.3.240.0200.05314.70
5.3.230.0200.07314.50
5.3.220.0130.07714.66
5.3.210.0130.06314.57
5.3.200.0200.07314.50
5.3.190.0230.07014.48
5.3.180.0270.06314.55
5.3.170.0330.03714.54
5.3.160.0200.05014.65
5.3.150.0300.05714.63
5.3.140.0170.05714.55
5.3.130.0230.05314.48
5.3.120.0200.05314.47
5.3.110.0200.05314.64
5.3.100.0230.04714.09
5.3.90.0200.05313.92
5.3.80.0230.04713.93
5.3.70.0230.04713.92
5.3.60.0200.04313.91
5.3.50.0270.04313.86
5.3.40.0270.04313.89
5.3.30.0170.05013.89
5.3.20.0170.05013.60
5.3.10.0200.05013.75
5.3.00.0200.05013.61
5.2.170.0230.05311.18
5.2.160.0170.05311.20
5.2.150.0130.04311.28
5.2.140.0230.05311.14
5.2.130.0100.04311.08
5.2.120.0230.04711.14
5.2.110.0170.04011.12
5.2.100.0230.03011.09
5.2.90.0230.03311.03
5.2.80.0270.03311.06
5.2.70.0270.04011.13
5.2.60.0100.05310.99
5.2.50.0200.04310.97
5.2.40.0100.04310.99
5.2.30.0130.04711.01
5.2.20.0170.03710.98
5.2.10.0030.05010.83
5.2.00.0200.03310.75
5.1.60.0170.03010.11
5.1.50.0130.0309.96
5.1.40.0070.03710.05
5.1.30.0130.05710.38
5.1.20.0070.04310.39
5.1.10.0130.04010.08
5.1.00.0130.03710.06
5.0.50.0130.0278.61
5.0.40.0100.0308.39
5.0.30.0030.0478.26
5.0.20.0000.0338.21
5.0.10.0070.0278.20
5.0.00.0130.0378.23
4.4.90.0070.0235.82
4.4.80.0030.0275.82
4.4.70.0100.0235.81
4.4.60.0100.0205.93
4.4.50.0070.0235.83
4.4.40.0130.0305.88
4.4.30.0070.0305.89
4.4.20.0100.0275.88
4.4.10.0100.0275.88
4.4.00.0070.0375.93
4.3.110.0070.0235.83
4.3.100.0000.0275.85
4.3.90.0030.0235.77
4.3.80.0070.0405.77
4.3.70.0100.0235.89
4.3.60.0030.0275.91
4.3.50.0070.0235.80
4.3.40.0030.0375.82
4.3.30.0070.0204.59
4.3.20.0070.0204.52
4.3.10.0000.0274.56
4.3.00.0130.01714.42

preferences:
49.34 ms | 400 KiB | 5 Q