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)
5.4.310.0040.04012.49
5.4.300.0090.04612.50
5.4.290.0050.04112.49
5.4.280.0080.04112.39
5.4.270.0060.03812.39
5.4.260.0140.04512.39
5.4.250.0080.04712.39
5.4.240.0090.03212.39
5.4.230.0060.03712.38
5.4.220.0060.03612.38
5.4.210.0080.03412.38
5.4.200.0080.03512.38
5.4.190.0060.03712.38
5.4.180.0080.03512.38
5.4.170.0070.03412.38
5.4.160.0060.03512.38
5.4.150.0060.03512.38
5.4.140.0080.04712.07
5.4.130.0040.03612.05
5.4.120.0030.03812.02
5.4.110.0060.03412.01
5.4.100.0050.03512.01
5.4.90.0050.03812.01
5.4.80.0090.03412.02
5.4.70.0060.03512.00
5.4.60.0050.03512.01
5.4.50.0060.03612.01
5.4.40.0060.03512.00
5.4.30.0050.03511.99
5.4.20.0070.03311.98
5.4.10.0040.03511.99
5.4.00.0060.03511.48
5.3.290.0090.04112.80
5.3.280.0110.03412.71
5.3.270.0060.04112.72
5.3.260.0070.03812.71
5.3.250.0030.03912.72
5.3.240.0040.03812.72
5.3.230.0030.04112.71
5.3.220.0050.03812.68
5.3.210.0040.04112.68
5.3.200.0100.03212.68
5.3.190.0090.03412.68
5.3.180.0070.03512.67
5.3.170.0040.03812.67
5.3.160.0100.04812.68
5.3.150.0050.03912.67
5.3.140.0070.03512.66
5.3.130.0080.03712.66
5.3.120.0070.03712.66
5.3.110.0070.04212.66
5.3.100.0070.03512.12
5.3.90.0080.03812.08
5.3.80.0040.03912.07
5.3.70.0070.03412.08
5.3.60.0070.03412.06
5.3.50.0050.03812.00
5.3.40.0060.03712.00
5.3.30.0090.03311.95
5.3.20.0110.03711.73
5.3.10.0050.03811.70
5.3.00.0110.03011.68
5.2.170.0060.0309.18
5.2.160.0030.0329.18
5.2.150.0100.0269.18
5.2.140.0070.0289.18
5.2.130.0050.0289.14
5.2.120.0060.0319.14
5.2.110.0030.0329.14
5.2.100.0030.0419.14
5.2.90.0060.0419.14
5.2.80.0060.0299.14
5.2.70.0030.0329.14
5.2.60.0050.0299.09
5.2.50.0070.0309.06
5.2.40.0060.0289.04
5.2.30.0070.0289.02
5.2.20.0050.0289.00
5.2.10.0040.0298.93
5.2.00.0010.0328.78
5.1.60.0040.0258.07
5.1.50.0060.0238.06
5.1.40.0030.0288.05
5.1.30.0070.0238.40
5.1.20.0030.0278.42
5.1.10.0040.0258.14
5.1.00.0080.0288.14
5.0.50.0030.0216.62
5.0.40.0060.0256.48
5.0.30.0020.0326.29
5.0.20.0040.0196.26
5.0.10.0040.0196.24
5.0.00.0030.0306.23
4.4.90.0030.0154.78
4.4.80.0020.0154.75
4.4.70.0040.0144.76
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0030.0244.70
4.4.30.0040.0144.75
4.4.20.0030.0154.84
4.4.10.0040.0144.85
4.4.00.0020.0254.76
4.3.110.0040.0144.67
4.3.100.0020.0154.67
4.3.90.0030.0154.63
4.3.80.0050.0254.59
4.3.70.0030.0144.63
4.3.60.0020.0154.63
4.3.50.0030.0154.63
4.3.40.0040.0224.54
4.3.30.0020.0163.28
4.3.20.0040.0143.26
4.3.10.0020.0163.22
4.3.00.0030.01715.95

preferences:
141.94 ms | 1386 KiB | 7 Q