3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array1 = ['x' => 1, 3 => 4, 't' => 8]; $array2 = ['x' => 2, 5 => 6,]; $array3 = ['x' => [3, 4, 5]]; $array4 = ['x' => [[4]]]; $arrays = [$array1, $array2, $array3, $array4]; print_r(array_merge_recursive(...$arrays));

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)
8.5.60.0040.00416.52
8.5.50.0090.00516.75
8.5.30.0120.00818.13
8.5.20.0100.01020.26
8.5.10.0120.00716.84
8.5.00.0170.01020.07
8.4.210.0080.01021.50
8.4.180.0160.00719.58
8.4.170.0120.00923.92
8.4.160.0120.00923.75
8.4.150.0080.00416.83
8.4.140.0190.00217.64
8.4.130.0160.00417.82
8.4.120.0130.00220.46
8.4.110.0150.00522.37
8.4.100.0120.00817.71
8.4.90.0100.01017.56
8.4.80.0150.01018.55
8.4.70.0170.00718.58
8.4.60.0340.00817.59
8.4.50.0370.00817.55
8.4.40.0420.00817.32
8.4.30.0370.00817.39
8.4.20.0410.00717.30
8.4.10.0340.00617.36
8.3.300.0130.00920.68
8.3.290.0150.00520.73
8.3.280.0110.00818.26
8.3.270.0140.00516.64
8.3.260.0100.00916.56
8.3.250.0060.00318.86
8.3.240.0130.00416.52
8.3.230.0110.00816.66
8.3.220.0130.00616.97
8.3.210.0160.00616.97
8.3.200.0300.00616.97
8.3.190.0230.00616.97
8.3.180.0200.00716.97
8.3.170.0300.00516.97
8.3.160.0250.00416.97
8.3.150.0270.00516.97
8.3.140.0270.00516.97
8.3.130.0310.00516.97
8.3.120.0320.00616.97
8.3.110.0270.00616.97
8.3.100.0320.00616.97
8.3.90.0330.00716.97
8.3.80.0420.00816.97
8.3.70.0380.00616.97
8.3.60.0390.00816.97
8.3.50.0280.00616.97
8.3.40.0340.00817.44
8.3.30.0290.00617.45
8.3.20.0320.00717.34
8.3.10.0270.00617.47
8.3.00.0230.00717.42
8.2.300.0100.01120.37
8.2.290.0100.00820.31
8.2.280.0280.00616.97
8.2.270.0220.00616.97
8.2.260.0300.00816.97
8.2.250.0350.00716.97
8.2.240.0260.00516.97
8.2.230.0290.00516.97
8.2.220.0300.00616.97
8.2.210.0330.00816.97
8.2.200.0320.00616.97
8.2.190.0260.00716.97
8.2.180.0310.00816.97
8.2.170.0320.00817.64
8.2.160.0340.00717.61
8.2.150.0390.00617.48
8.2.140.0390.00617.51
8.2.130.0340.00617.42
8.2.120.0370.00917.50
8.2.110.0320.00917.55
8.2.100.0350.00817.48
8.2.90.0330.00717.51
8.2.80.0320.00717.57
8.2.70.0280.00817.56
8.2.60.0320.00817.53
8.2.50.0310.00817.42
8.2.40.0300.00617.47
8.2.30.0400.00817.39
8.2.20.0310.00817.53
8.2.10.0330.00617.51
8.2.00.0250.00617.60
8.1.340.0140.00621.61

preferences:
59.53 ms | 870 KiB | 5 Q