3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array(1, 2, 3, 4); $arr2 = array("a" => array(1, 2, 3)); $arr3 = array(); print_r(array_merge_recursive($arr3, $arr1, $arr2));

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)
8.3.60.0060.00916.50
8.3.50.0110.00416.27
8.3.40.0150.00318.72
8.3.30.0150.00018.45
8.3.20.0000.00720.16
8.3.10.0050.00221.60
8.3.00.0000.00817.65
8.2.180.0120.00616.38
8.2.170.0100.00722.96
8.2.160.0100.00320.35
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0050.00220.96
8.2.120.0040.00426.35
8.2.110.0050.00522.25
8.2.100.0040.00718.22
8.2.90.0040.00419.08
8.2.80.0090.00017.97
8.2.70.0040.00417.38
8.2.60.0000.00817.80
8.2.50.0040.00418.10
8.2.40.0080.00022.29
8.2.30.0050.00319.18
8.2.20.0040.00417.86
8.2.10.0040.00417.86
8.2.00.0040.00418.04
8.1.280.0060.00925.92
8.1.270.0000.00723.96
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00623.97
8.1.230.0120.00017.45
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0060.00317.21
8.1.190.0080.00017.10
8.1.180.0090.00018.10
8.1.170.0000.00918.54
8.1.160.0030.00318.91
8.1.150.0070.00020.66
8.1.140.0020.00519.54
8.1.130.0040.00418.77
8.1.120.0070.00017.40
8.1.110.0000.00917.22
8.1.100.0030.00517.38
8.1.90.0030.00717.39
8.1.80.0000.00717.27
8.1.70.0030.00317.36
8.1.60.0040.00417.51
8.1.50.0040.00417.44
8.1.40.0020.00517.47
8.1.30.0070.00017.57
8.1.20.0050.00317.48
8.1.10.0000.00717.36
8.1.00.0000.00717.42
8.0.300.0040.00418.77
8.0.290.0000.00816.63
8.0.280.0040.00418.28
8.0.270.0000.00717.22
8.0.260.0060.00016.71
8.0.250.0030.00316.79
8.0.240.0070.00016.91
8.0.230.0000.00716.75
8.0.220.0000.00716.86
8.0.210.0000.00716.88
8.0.200.0000.00716.76
8.0.190.0080.00016.89
8.0.180.0000.00716.90
8.0.170.0030.00416.73
8.0.160.0050.00316.85
8.0.150.0030.00516.73
8.0.140.0040.00416.79
8.0.130.0000.00613.19
8.0.120.0000.00816.71
8.0.110.0040.00416.84
8.0.100.0050.00316.68
8.0.90.0040.00416.85
8.0.80.0150.00616.77
8.0.70.0030.00516.71
8.0.60.0040.00416.64
8.0.50.0040.00416.90
8.0.30.0070.01117.09
8.0.20.0150.00517.40
8.0.10.0000.00717.04
8.0.00.0110.00616.87
7.4.330.0020.00215.55
7.4.320.0000.00616.44
7.4.300.0000.00716.53
7.4.290.0070.00016.36
7.4.280.0000.00816.52
7.4.270.0000.00816.54
7.4.260.0000.00513.24
7.4.250.0040.00416.47
7.4.240.0000.00716.51
7.4.230.0000.00716.59
7.4.220.0100.01616.61
7.4.210.0090.00916.55
7.4.200.0000.00716.27
7.4.160.0100.00616.37
7.4.150.0110.00717.40
7.4.140.0100.01317.86
7.4.130.0100.00816.30
7.4.120.0080.01516.27
7.3.330.0060.00013.07
7.3.320.0030.00312.93
7.3.310.0070.00016.07
7.3.300.0070.00016.13
7.3.290.0000.00716.09
7.3.280.0080.01016.13
7.3.270.0070.01617.40
7.3.260.0100.00916.24
7.3.250.0100.00716.26
7.3.240.0130.00516.23

preferences:
35.19 ms | 401 KiB | 5 Q