3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['test', 'derp', 'dtht']; $b = ['$_SESSION', '$_SESSION', 'derp'] var_dump(array_merge($a, $b));

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)
5.4.340.0040.03612.01
5.4.320.0070.04212.50
5.4.310.0090.03912.50
5.4.300.0090.03612.49
5.4.290.0060.03712.49
5.4.280.0060.03412.39
5.4.270.0060.03512.39
5.4.260.0070.03512.39
5.4.250.0040.03812.39
5.4.240.0070.03412.39
5.4.230.0060.03612.38
5.4.220.0060.03512.38
5.4.210.0070.03412.38
5.4.200.0060.03612.38
5.4.190.0070.03412.38
5.4.180.0040.03712.38
5.4.170.0070.03412.38
5.4.160.0070.03412.38
5.4.150.0050.03612.38
5.4.140.0050.03912.07
5.4.130.0060.03512.05
5.4.120.0070.03312.02
5.4.110.0070.04012.01
5.4.100.0080.03112.02
5.4.90.0050.03612.01
5.4.80.0080.03312.01
5.4.70.0070.04212.00
5.4.60.0050.03412.01
5.4.50.0050.03612.01
5.4.40.0080.03212.00
5.4.30.0010.04011.99
5.4.20.0060.03311.99
5.4.10.0040.03611.99
5.4.00.0100.03611.49
5.3.290.0080.03712.80
5.3.280.0070.03812.71
5.3.270.0070.03912.72
5.3.260.0070.03812.72
5.3.250.0030.03912.72
5.3.240.0090.04012.72
5.3.230.0080.03412.71
5.3.220.0080.03512.68
5.3.210.0050.03912.68
5.3.200.0070.03512.68
5.3.190.0050.03812.68
5.3.180.0060.03712.68
5.3.170.0050.03712.67
5.3.160.0040.03812.68
5.3.150.0060.03612.67
5.3.140.0070.03412.66
5.3.130.0070.03712.66
5.3.120.0050.03912.66
5.3.110.0070.03712.66
5.3.100.0060.03612.11
5.3.90.0050.03712.09
5.3.80.0070.03512.07
5.3.70.0050.03712.07
5.3.60.0040.03712.06
5.3.50.0100.03612.00
5.3.40.0050.03712.00
5.3.30.0040.03711.95
5.3.20.0060.03511.72
5.3.10.0040.03711.70
5.3.00.0080.04611.68
5.2.170.0020.0329.18
5.2.160.0070.0259.18
5.2.150.0040.0309.18
5.2.140.0040.0309.18
5.2.130.0060.0329.14
5.2.120.0030.0299.14
5.2.110.0040.0419.15
5.2.100.0060.0269.14
5.2.90.0090.0369.14
5.2.80.0020.0319.14
5.2.70.0040.0309.13
5.2.60.0020.0319.09
5.2.50.0040.0299.06
5.2.40.0050.0279.03
5.2.30.0050.0289.02
5.2.20.0050.0279.00
5.2.10.0060.0268.93
5.2.00.0030.0308.78
5.1.60.0070.0258.07
5.1.50.0060.0238.07
5.1.40.0040.0248.05
5.1.30.0050.0258.40
5.1.20.0050.0268.42
5.1.10.0050.0248.14
5.1.00.0070.0288.14
5.0.50.0050.0206.62
5.0.40.0020.0206.48
5.0.30.0080.0296.30
5.0.20.0030.0216.26
5.0.10.0040.0196.23
5.0.00.0050.0326.23
4.4.90.0040.0144.78
4.4.80.0030.0154.75
4.4.70.0030.0224.75
4.4.60.0010.0294.75
4.4.50.0010.0164.77
4.4.40.0040.0234.71
4.4.30.0030.0144.76
4.4.20.0030.0154.84
4.4.10.0010.0174.85
4.4.00.0020.0254.76
4.3.110.0020.0164.67
4.3.100.0000.0214.66
4.3.90.0020.0154.63
4.3.80.0010.0254.59
4.3.70.0030.0144.63
4.3.60.0010.0174.63
4.3.50.0030.0164.63
4.3.40.0030.0234.54
4.3.30.0020.0173.29
4.3.20.0020.0183.26
4.3.10.0030.0143.22
4.3.00.0270.0176.90

preferences:
141.47 ms | 1394 KiB | 7 Q