3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1 = [ "a" => 2, "b" => 0, "c" => 5, ]; $a2 = [ "a" => 3, "b" => 9, "c" => 7, "d" => 10, ]; $result = $a1; foreach ($a2 as $k => $v) { $result[$k] = ($result[$k] ?? 0) + $v; } var_export($result);

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)
8.5.30.0130.00619.42
8.5.20.0090.00820.16
8.5.10.0090.01216.53
8.5.00.0110.01019.86
8.4.180.0140.00819.74
8.4.170.0120.00923.82
8.4.160.0130.00923.85
8.4.150.0070.00216.94
8.4.140.0130.00817.57
8.4.130.0040.00418.95
8.4.120.0110.00824.03
8.4.110.0100.00920.72
8.4.100.0140.00617.68
8.4.90.0150.00718.88
8.4.80.0040.00419.62
8.4.70.0130.00817.91
8.4.60.0140.00818.45
8.4.50.0080.00817.84
8.4.40.0130.00717.42
8.4.30.0060.01220.86
8.4.20.0130.00719.71
8.4.10.0030.00619.39
8.3.300.0110.01020.67
8.3.290.0120.00820.72
8.3.280.0130.01018.27
8.3.270.0140.00616.74
8.3.260.0090.00116.73
8.3.250.0110.00818.77
8.3.240.0130.00616.84
8.3.230.0090.00216.63
8.3.220.0060.00718.85
8.3.210.0100.00916.64
8.3.200.0160.00416.59
8.3.190.0040.00316.54
8.3.180.0090.00616.41
8.3.170.0090.00918.70
8.3.160.0090.00917.04
8.3.150.0070.01117.17
8.3.140.0090.00918.84
8.3.130.0080.00016.72
8.3.120.0030.00618.98
8.3.110.0070.00720.94
8.3.100.0070.00316.52
8.3.90.0080.00026.77
8.3.80.0000.00917.97
8.3.70.0070.00718.43
8.3.60.0100.00716.68
8.3.50.0070.01416.38
8.3.40.0140.00721.94
8.3.30.0090.00620.17
8.3.20.0030.01723.55
8.3.10.0130.00623.53
8.3.00.0090.00920.71
8.2.300.0120.00818.78
8.2.290.0110.00820.43
8.2.280.0050.00618.65
8.2.270.0110.00717.21
8.2.260.0030.00618.17
8.2.250.0000.00916.58
8.2.240.0000.00918.80
8.2.230.0090.00022.58
8.2.220.0040.00424.06
8.2.210.0000.00826.77
8.2.200.0080.00016.50
8.2.190.0040.01116.58
8.2.180.0150.00418.16
8.2.170.0070.01022.96
8.2.160.0070.00720.90
8.2.150.0100.01021.00
8.2.140.0120.00322.08
8.2.130.0120.00322.08
8.2.120.0130.00721.16
8.2.110.0080.01220.98
8.2.100.0120.00820.89
8.2.90.0150.00020.68
8.2.80.0070.01321.14
8.2.70.0040.01120.45
8.2.60.0110.00420.58
8.2.50.0090.00620.89
8.2.40.0070.01420.51
8.2.30.0120.00320.44
8.2.20.0070.00720.60
8.2.10.0040.01120.40
8.2.00.0120.00918.69
8.1.340.0120.01121.73
8.1.330.0050.00521.98
8.1.320.0090.01016.15
8.1.310.0030.00518.62
8.1.300.0060.00316.15
8.1.290.0040.00430.84
8.1.280.0030.01625.92
8.1.270.0030.01022.05
8.1.260.0000.01522.21
8.1.250.0100.00521.83
8.1.240.0040.01120.38
8.1.230.0060.00920.24
8.1.220.0150.00020.73
8.1.210.0120.00820.36
8.1.200.0100.00320.65
8.1.190.0110.00320.34
8.1.180.0080.01220.16
8.1.170.0090.00620.64
8.1.160.0110.00420.22
8.1.150.0110.00720.50
8.1.140.0060.01220.30
8.1.130.0170.00320.66
8.1.120.0110.00720.41
8.1.110.0110.00420.33
8.1.100.0130.00621.32
8.1.90.0080.01120.22
8.1.80.0040.01121.52
8.1.70.0160.00320.20
8.1.60.0110.00720.46
8.1.50.0140.00420.32
8.1.40.0140.00320.46
8.1.30.0140.01020.85
8.1.20.0060.01221.79
8.1.10.0100.01020.43
8.1.00.0130.00320.32
7.0.170.0290.00315.02
7.0.00.0070.00626.77
5.4.450.0060.00214.39
5.4.120.0130.00614.39

preferences:
46.88 ms | 1002 KiB | 5 Q