3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = ['1' => 'test1','2' => 'test2' ]; $array2 = []; if (is_array($array1) && is_array($array2)){ $array =array_merge($array1, $array2); } var_dump($array); ?>

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)
8.3.60.0090.00616.75
8.3.50.0060.00816.45
8.3.40.0090.00618.68
8.3.30.0090.00618.58
8.3.20.0040.00420.09
8.3.10.0090.00021.77
8.3.00.0040.00422.02
8.2.180.0110.00716.49
8.2.170.0070.01122.96
8.2.160.0150.00419.07
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0080.00020.80
8.2.120.0050.00226.35
8.2.110.0070.00422.08
8.2.100.0070.01017.62
8.2.90.0000.00919.22
8.2.80.0000.00817.97
8.2.70.0090.00717.25
8.2.60.0060.00317.93
8.2.50.0080.00018.10
8.2.40.0080.00020.43
8.2.30.0000.00721.02
8.2.20.0040.00418.06
8.2.10.0040.00418.09
8.2.00.0070.00018.03
8.1.280.0120.00625.92
8.1.270.0080.00022.09
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00621.02
8.1.230.0060.00618.97
8.1.220.0080.00017.74
8.1.210.0050.00318.77
8.1.200.0060.00617.23
8.1.190.0040.00417.22
8.1.180.0000.00818.10
8.1.170.0070.00318.26
8.1.160.0040.00418.88
8.1.150.0000.00820.66
8.1.140.0000.00719.56
8.1.130.0000.00718.86
8.1.120.0020.00517.49
8.1.110.0030.00617.39
8.1.100.0070.00017.39
8.1.90.0000.00717.52
8.1.80.0000.00717.46
8.1.70.0040.00417.34
8.1.60.0070.00017.59
8.1.50.0040.00417.56
8.1.40.0040.00417.54
8.1.30.0070.00017.65
8.1.20.0000.00817.53
8.1.10.0040.00417.31
8.1.00.0060.00317.37
8.0.300.0000.00820.07
8.0.290.0040.00416.63
8.0.280.0070.00018.47
8.0.270.0030.00317.30
8.0.260.0030.00316.80
8.0.250.0000.00716.95
8.0.240.0030.00616.91
8.0.230.0070.00016.91
8.0.220.0060.00016.76
8.0.210.0000.00716.92
8.0.200.0000.00816.91
8.0.190.0040.00416.82
8.0.180.0000.00716.88
8.0.170.0030.00316.80
8.0.160.0000.00716.93
8.0.150.0000.00716.72
8.0.140.0070.00016.82
8.0.130.0060.00013.34
8.0.120.0040.00416.88
8.0.110.0070.00016.77
8.0.100.0040.00416.92
8.0.90.0050.00316.68
8.0.80.0060.00916.84
8.0.70.0000.00716.73
8.0.60.0000.00716.86
8.0.50.0040.00416.69
8.0.30.0050.01317.05
8.0.20.0140.00617.40
8.0.10.0030.00616.91
8.0.00.0110.00716.90
7.4.330.0050.00015.55
7.4.320.0030.00316.59
7.4.300.0030.00316.44
7.4.290.0050.00316.38
7.4.280.0070.00016.55
7.4.270.0070.00016.40
7.4.260.0070.00016.56
7.4.250.0000.00716.55
7.4.240.0040.00416.51
7.4.230.0030.00316.61
7.4.220.0160.00316.53
7.4.210.0030.01416.52
7.4.200.0080.00016.59
7.4.160.0080.00716.47
7.4.150.0140.00317.40
7.4.140.0070.01517.86
7.4.130.0090.00916.63
7.4.120.0110.01216.47
7.4.110.0080.00816.36
7.4.100.0070.01016.32
7.4.90.0070.01016.41
7.4.80.0100.00719.39
7.4.70.0030.01316.34
7.4.60.0110.00416.40
7.4.50.0030.01116.27
7.4.40.0100.00716.51
7.4.30.0160.00016.61
7.4.00.0040.01115.14
7.3.330.0060.00013.07
7.3.320.0020.00212.86
7.3.310.0030.00316.19
7.3.300.0000.00616.13
7.3.290.0030.00316.13
7.3.280.0090.00716.11
7.3.270.0090.00917.40
7.3.260.0130.00716.45
7.3.250.0150.00516.36
7.3.240.0110.00816.11
7.3.230.0110.00716.59
7.3.210.0060.01116.53
7.3.200.0060.00916.32
7.3.190.0090.00916.27
7.3.180.0220.01616.36
7.3.170.0100.00716.41
7.3.160.0130.00316.45
7.2.330.0090.00916.53
7.2.320.0130.01016.64
7.2.310.0160.00016.52
7.2.300.0060.01216.50
7.2.290.0130.00416.32
7.2.60.0030.00916.95
7.2.00.0000.01519.51
7.1.200.0060.00615.68
7.1.100.0000.01418.19
7.1.70.0520.01115.46
7.1.60.0290.01434.99
7.1.50.0440.00334.82
7.1.40.0310.01334.38
7.1.30.0230.02834.65
7.1.20.0600.02134.43
7.1.10.0110.01016.54
7.1.00.0140.00516.54
7.0.200.0040.01916.88
7.0.190.0060.01516.42
7.0.180.0060.01016.14
7.0.170.0440.02616.12
7.0.160.0060.01516.27
7.0.150.0100.01216.12
7.0.140.0000.01716.30
7.0.130.0110.00916.37
7.0.120.0000.01616.68
7.0.110.0060.01216.32
7.0.100.0040.01616.25
7.0.90.0040.01516.17
7.0.80.0070.01016.34
7.0.70.0060.01216.02
7.0.60.0070.01416.20
7.0.50.0090.01316.11
7.0.40.0070.01016.50
7.0.30.0120.00716.55
7.0.20.0080.01116.38
7.0.10.0030.01916.54
7.0.00.0120.00916.33

preferences:
38.77 ms | 400 KiB | 5 Q