3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [['item1', 'update']]; $arr2 = [['item2', 'create']]; $arr3 = [['item2', 'update']]; var_dump(array_merge($arr1, $arr2)); var_dump($arr1[] = $arr2); var_dump(array_merge($arr2, $arr3));

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)
8.3.60.0110.00316.63
8.3.50.0110.00722.04
8.3.40.0140.00418.47
8.3.30.0070.00718.71
8.3.20.0080.00018.70
8.3.10.0080.00021.77
8.3.00.0050.00321.93
8.2.180.0070.01518.04
8.2.170.0070.00722.96
8.2.160.0100.00722.13
8.2.150.0130.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00419.71
8.2.120.0000.00826.35
8.2.110.0060.00322.08
8.2.100.0080.00417.91
8.2.90.0000.00819.17
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0060.00317.93
8.2.50.0000.00818.10
8.2.40.0030.00520.42
8.2.30.0020.00521.13
8.2.20.0030.00517.98
8.2.10.0070.00017.86
8.2.00.0060.00317.53
8.1.280.0100.00625.92
8.1.270.0070.00022.06
8.1.260.0080.00028.09
8.1.250.0000.00828.09
8.1.240.0050.00322.14
8.1.230.0110.00017.89
8.1.220.0040.00417.74
8.1.210.0060.00318.77
8.1.200.0050.00317.22
8.1.190.0000.00817.23
8.1.180.0030.00618.10
8.1.170.0000.00820.18
8.1.160.0000.00722.18
8.1.150.0000.00720.64
8.1.140.0040.00419.41
8.1.130.0030.00317.69
8.1.120.0000.00717.42
8.1.110.0000.00817.21
8.1.100.0000.00717.41
8.1.90.0000.00817.34
8.1.80.0040.00417.34
8.1.70.0070.00017.40
8.1.60.0040.00417.51
8.1.50.0080.00017.36
8.1.40.0030.00517.44
8.1.30.0060.00317.55
8.1.20.0040.00417.55
8.1.10.0050.00217.46
8.1.00.0020.00517.39
8.0.300.0070.00018.77
8.0.290.0000.00816.63
8.0.280.0050.00218.38
8.0.270.0000.00717.10
8.0.260.0000.00717.07
8.0.250.0000.00716.93
8.0.240.0000.00716.86
8.0.230.0030.00316.87
8.0.220.0000.00716.81
8.0.210.0000.00816.78
8.0.200.0030.00616.91
8.0.190.0040.00416.77
8.0.180.0000.00716.85
8.0.170.0030.00516.80
8.0.160.0040.00416.75
8.0.150.0040.00416.65
8.0.140.0030.00416.81
8.0.130.0060.00013.25
8.0.120.0070.00016.70
8.0.110.0050.00516.82
8.0.100.0040.00416.88
8.0.90.0000.00716.83
8.0.80.0090.00616.70
8.0.70.0050.00316.77
8.0.60.0040.00416.76
8.0.50.0030.00516.86
8.0.30.0050.01116.92
8.0.20.0130.00817.40
8.0.10.0030.00516.76
8.0.00.0030.01516.90
7.4.330.0000.00515.55
7.4.320.0050.00216.57
7.4.300.0060.00016.35
7.4.290.0040.00416.44
7.4.280.0050.00216.52
7.4.270.0030.00316.54
7.4.260.0000.00916.52
7.4.250.0000.00716.48
7.4.240.0000.00816.55
7.4.230.0030.00316.53
7.4.220.0100.01016.59
7.4.210.0070.01516.59
7.4.200.0040.00416.28
7.4.160.0060.01016.36
7.4.150.0070.01117.40
7.4.140.0080.01017.86
7.4.130.0100.00916.31
7.4.120.0090.01016.42
7.4.110.0110.01116.55
7.4.100.0110.00816.50
7.4.90.0150.00316.35
7.4.80.0150.00919.39
7.4.70.0070.01016.32
7.4.60.0100.00616.61
7.4.50.0030.00916.44
7.4.40.0060.01916.56
7.4.30.0070.01016.47
7.4.00.0040.01415.04
7.3.330.0020.00212.94
7.3.320.0000.00613.04
7.3.310.0000.00816.21
7.3.300.0070.00016.20
7.3.290.0080.00716.26
7.3.280.0080.01016.24
7.3.270.0110.00717.40
7.3.260.0130.00816.24
7.3.250.0070.01016.20
7.3.240.0130.00616.28
7.3.230.0150.00316.39
7.3.210.0130.00316.31
7.3.200.0140.00416.46
7.3.190.0120.00916.10
7.3.180.0060.01016.35
7.3.170.0190.00316.13
7.3.160.0090.00916.21
7.2.330.0060.01516.32
7.2.320.0100.01016.40
7.2.310.0090.00916.35
7.2.300.0200.00316.33
7.2.290.0070.01016.59
7.2.00.0090.00619.37
7.1.70.0030.01017.23
7.1.60.0200.00017.09
7.1.00.0070.07322.54
7.0.200.0250.00414.79
7.0.120.0100.05322.00
7.0.110.0130.06021.99
7.0.100.0070.08022.16
7.0.90.0130.07321.98
7.0.80.0230.07322.11
7.0.70.0070.06322.02
7.0.60.0100.06322.00
7.0.50.0100.06722.10
7.0.40.0200.05322.15
7.0.30.0270.05022.11
7.0.20.0100.08022.06
7.0.10.0070.08022.05
7.0.00.0170.07722.18
5.6.270.0030.06321.08
5.6.260.0230.04721.07
5.6.250.0070.06320.89
5.6.240.0100.05720.87
5.6.230.0130.06021.03
5.6.220.0200.06021.08
5.6.210.0230.07020.98
5.6.200.0200.05320.83
5.6.190.0200.07020.92
5.6.180.0130.06020.85
5.6.170.0200.05321.01
5.6.160.0100.08320.86
5.6.150.0070.07721.02
5.6.140.0170.08021.00
5.6.130.0130.06721.00
5.6.120.0170.05321.03
5.6.110.0270.06720.99
5.6.100.0170.07721.03
5.6.90.0130.07720.97
5.6.80.0070.06320.41
5.6.70.0130.07020.38
5.6.60.0200.07320.26
5.6.50.0130.07320.36
5.6.40.0130.07320.35
5.6.30.0170.05720.19
5.6.20.0070.06720.20
5.6.10.0130.05320.27
5.6.00.0100.05720.33

preferences:
36.15 ms | 401 KiB | 5 Q