3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1[0] = 'zero'; $array1[1] = 'one'; $array2[1] = 'one'; $array2[2] = 'two'; $array2[3] = 'three'; var_dump($array1 + $array2); var_dump(array_merge($array1 + $array2));

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)
5.4.310.0080.03612.49
5.4.300.0100.03312.50
5.4.290.0060.03912.49
5.4.280.0060.03512.39
5.4.270.0060.03612.39
5.4.260.0070.03612.39
5.4.250.0040.03812.39
5.4.240.0050.03612.39
5.4.230.0070.03712.38
5.4.220.0090.03912.38
5.4.210.0110.03112.38
5.4.200.0060.03712.38
5.4.190.0050.03712.38
5.4.180.0060.03912.38
5.4.170.0060.03512.39
5.4.160.0060.03512.38
5.4.150.0050.03612.38
5.4.140.0040.03712.07
5.4.130.0090.04012.05
5.4.120.0110.03612.02
5.4.110.0100.04712.01
5.4.100.0060.03512.01
5.4.90.0060.04312.01
5.4.80.0110.03412.01
5.4.70.0070.04112.00
5.4.60.0080.04612.01
5.4.50.0120.04212.00
5.4.40.0100.04412.00
5.4.30.0110.03211.99
5.4.20.0060.03911.99
5.4.10.0040.03712.00
5.4.00.0050.03811.48
5.3.290.0040.04112.80
5.3.280.0070.03712.71
5.3.270.0050.04212.73
5.3.260.0040.04112.72
5.3.250.0080.03612.72
5.3.240.0050.03812.72
5.3.230.0070.03612.71
5.3.220.0070.03612.68
5.3.210.0040.04012.68
5.3.200.0040.03812.68
5.3.190.0080.03512.67
5.3.180.0040.03812.67
5.3.170.0020.04012.67
5.3.160.0040.03812.67
5.3.150.0060.03612.68
5.3.140.0040.03712.66
5.3.130.0080.03612.66
5.3.120.0070.03812.66
5.3.110.0060.04012.66
5.3.100.0050.04312.12
5.3.90.0070.03612.09
5.3.80.0050.03712.08
5.3.70.0100.03712.08
5.3.60.0090.03312.06
5.3.50.0050.03612.00
5.3.40.0070.03412.00
5.3.30.0060.03311.95
5.3.20.0080.03211.72
5.3.10.0040.03611.70
5.3.00.0040.04411.68
5.2.170.0080.0309.18
5.2.160.0050.0299.18
5.2.150.0070.0299.18
5.2.140.0030.0339.18
5.2.130.0080.0269.14
5.2.120.0070.0279.14
5.2.110.0060.0349.15
5.2.100.0040.0299.14
5.2.90.0040.0309.14
5.2.80.0060.0299.14
5.2.70.0020.0339.14
5.2.60.0060.0309.09
5.2.50.0060.0299.06
5.2.40.0060.0339.04
5.2.30.0040.0429.01
5.2.20.0050.0339.00
5.2.10.0060.0308.92
5.2.00.0080.0408.79
5.1.60.0040.0328.06
5.1.50.0060.0328.06
5.1.40.0060.0338.05
5.1.30.0020.0278.40
5.1.20.0050.0288.42
5.1.10.0050.0268.14
5.1.00.0040.0268.14
5.0.50.0070.0176.62
5.0.40.0040.0206.48
5.0.30.0050.0336.29
5.0.20.0030.0196.27
5.0.10.0050.0186.24
5.0.00.0050.0286.23
4.4.90.0050.0144.78
4.4.80.0020.0214.76
4.4.70.0010.0174.76
4.4.60.0030.0154.76
4.4.50.0040.0144.77
4.4.40.0020.0254.70
4.4.30.0020.0164.75
4.4.20.0030.0164.85
4.4.10.0010.0254.85
4.4.00.0030.0284.76
4.3.110.0020.0174.67
4.3.100.0030.0154.67
4.3.90.0050.0134.63
4.3.80.0040.0244.58
4.3.70.0060.0194.63
4.3.60.0030.0164.63
4.3.50.0020.0164.63
4.3.40.0030.0274.54
4.3.30.0010.0233.28
4.3.20.0030.0193.26
4.3.10.0030.0213.22
4.3.00.0030.01715.95

preferences:
148.12 ms | 1394 KiB | 7 Q