3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array(1, 2, 3, 4); $arr2 = array("a" => array(1, 2, 3)); $arr3 = array(); print_r(array_merge_recursive($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)
8.3.70.0140.00316.25
8.3.60.0140.00018.43
8.3.50.0120.00817.19
8.3.40.0130.00618.55
8.3.30.0120.00318.45
8.3.20.0070.00020.18
8.3.10.0040.00421.87
8.3.00.0050.00217.47
8.2.180.0140.00316.32
8.2.170.0070.00722.96
8.2.160.0090.00620.44
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0070.00019.34
8.2.120.0040.00426.35
8.2.110.0040.00721.12
8.2.100.0040.00717.94
8.2.90.0040.00419.30
8.2.80.0030.00517.97
8.2.70.0080.00017.93
8.2.60.0040.00418.22
8.2.50.0030.00618.10
8.2.40.0040.00422.14
8.2.30.0070.00019.11
8.2.20.0030.00518.04
8.2.10.0000.00717.96
8.2.00.0070.00017.91
8.1.280.0110.00725.92
8.1.270.0000.00723.82
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00322.20
8.1.230.0080.00321.07
8.1.220.0030.00517.74
8.1.210.0060.00318.77
8.1.200.0000.00917.22
8.1.190.0040.00417.10
8.1.180.0040.00418.10
8.1.170.0060.00318.51
8.1.160.0050.00219.04
8.1.150.0040.00420.52
8.1.140.0070.00019.50
8.1.130.0030.00318.80
8.1.120.0000.00717.43
8.1.110.0040.00417.26
8.1.100.0000.00917.29
8.1.90.0080.00417.33
8.1.80.0030.00517.35
8.1.70.0000.00717.34
8.1.60.0030.00517.39
8.1.50.0000.00717.30
8.1.40.0000.00817.51
8.1.30.0040.00417.51
8.1.20.0000.00817.55
8.1.10.0040.00417.30
8.1.00.0030.00617.35
8.0.300.0100.00021.44
8.0.290.0030.00616.63
8.0.280.0050.00318.28
8.0.270.0030.00317.11
8.0.260.0030.00316.68
8.0.250.0000.00616.79
8.0.240.0000.00816.92
8.0.230.0030.00316.87
8.0.220.0000.00716.82
8.0.210.0000.00716.70
8.0.200.0000.00816.87
8.0.190.0050.00316.88
8.0.180.0030.00516.77
8.0.170.0000.00716.84
8.0.160.0040.00416.77
8.0.150.0000.00716.79
8.0.140.0070.00016.70
8.0.130.0000.00613.18
8.0.120.0000.00816.81
8.0.110.0000.00716.74
8.0.100.0030.00516.64
8.0.90.0000.00716.84
8.0.80.0000.01516.70
8.0.70.0070.00016.68
8.0.60.0080.00016.90
8.0.50.0040.00416.63
8.0.30.0150.00517.06
8.0.20.0080.01117.40
8.0.10.0000.00716.72
8.0.00.0100.00716.52
7.4.330.0050.00015.55
7.4.320.0030.00316.43
7.4.300.0000.00616.51
7.4.290.0000.00716.35
7.4.280.0070.00016.56
7.4.270.0000.00616.42
7.4.260.0050.00013.21
7.4.250.0000.00816.39
7.4.240.0070.00016.42
7.4.230.0070.00016.62
7.4.220.0000.02516.52
7.4.210.0110.00516.46
7.4.200.0040.00416.50
7.4.160.0090.00816.31
7.4.150.0140.00317.40
7.4.140.0120.00617.86
7.4.130.0210.00316.47
7.4.120.0090.01116.45
7.3.330.0030.00312.89
7.3.320.0060.00013.05
7.3.310.0040.00415.97
7.3.300.0030.00315.98
7.3.290.0000.00715.99
7.3.280.0090.00916.13
7.3.270.0080.00917.40
7.3.260.0070.01016.49
7.3.250.0120.00616.21
7.3.240.0110.00616.14

preferences:
38.54 ms | 401 KiB | 5 Q