3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a' => 'aa', 'b' => 'bb']; $a = ['a' => 'aaa', 'c' => 'cc']; var_dump($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)
5.4.320.0070.03312.47
5.4.310.0060.03612.46
5.4.300.0060.03512.46
5.4.290.0080.03512.46
5.4.280.0070.03312.36
5.4.270.0080.03612.36
5.4.260.0070.03912.36
5.4.250.0050.04512.36
5.4.240.0050.03612.36
5.4.230.0060.04212.35
5.4.220.0060.03612.35
5.4.210.0070.03412.35
5.4.200.0050.03912.35
5.4.190.0030.03812.35
5.4.180.0070.03412.34
5.4.170.0030.03812.36
5.4.160.0050.03612.36
5.4.150.0050.03612.35
5.4.140.0050.03812.04
5.4.130.0050.03412.02
5.4.120.0050.03511.98
5.4.110.0070.04011.98
5.4.100.0070.04011.98
5.4.90.0050.03611.98
5.4.80.0060.03611.98
5.4.70.0070.03411.97
5.4.60.0060.03511.97
5.4.50.0070.03311.97
5.4.40.0050.03411.96
5.4.30.0060.03411.96
5.4.20.0020.03711.96
5.4.10.0050.04411.96
5.4.00.0070.04911.46
5.3.290.0080.04412.80
5.3.280.0080.03412.71
5.3.270.0040.03912.73
5.3.260.0080.03512.72
5.3.250.0050.03712.72
5.3.240.0070.03912.72
5.3.230.0070.03612.71
5.3.220.0080.03612.68
5.3.210.0080.03612.68
5.3.200.0030.03912.68
5.3.190.0070.03612.68
5.3.180.0050.03612.67
5.3.170.0070.03812.67
5.3.160.0070.03512.67
5.3.150.0070.03412.67
5.3.140.0030.03812.66
5.3.130.0080.04212.66
5.3.120.0060.04012.66
5.3.110.0090.03412.66
5.3.100.0060.03612.11
5.3.90.0030.04112.08
5.3.80.0050.04212.08
5.3.70.0080.03912.07
5.3.60.0040.03712.06
5.3.50.0050.03612.00
5.3.40.0070.03412.00
5.3.30.0050.03511.95
5.3.20.0050.03411.72
5.3.10.0050.03411.70
5.3.00.0030.03811.68
5.2.170.0040.0299.18
5.2.160.0030.0309.18
5.2.150.0020.0329.18
5.2.140.0030.0319.19
5.2.130.0030.0309.14
5.2.120.0040.0289.14
5.2.110.0060.0269.14
5.2.100.0070.0259.14
5.2.90.0010.0339.14
5.2.80.0030.0319.14
5.2.70.0020.0329.13
5.2.60.0010.0329.09
5.2.50.0060.0289.06
5.2.40.0070.0259.04
5.2.30.0030.0359.02
5.2.20.0020.0319.00
5.2.10.0050.0288.93
5.2.00.0030.0348.78
5.1.60.0040.0248.06
5.1.50.0040.0248.06
5.1.40.0030.0258.05
5.1.30.0010.0288.39
5.1.20.0030.0278.41
5.1.10.0030.0268.14
5.1.00.0030.0268.14
5.0.50.0040.0196.62
5.0.40.0060.0166.48
5.0.30.0020.0326.29
5.0.20.0050.0186.27
5.0.10.0050.0176.24
5.0.00.0030.0306.23
4.4.90.0020.0164.78
4.4.80.0020.0164.75
4.4.70.0030.0154.76
4.4.60.0040.0144.76
4.4.50.0040.0144.77
4.4.40.0030.0244.71
4.4.30.0030.0144.76
4.4.20.0020.0164.84
4.4.10.0020.0184.85
4.4.00.0040.0264.76
4.3.110.0030.0164.66
4.3.100.0010.0164.66
4.3.90.0020.0154.63
4.3.80.0050.0234.58
4.3.70.0030.0144.63
4.3.60.0020.0154.63
4.3.50.0030.0144.63
4.3.40.0030.0234.54
4.3.30.0030.0143.28
4.3.20.0030.0183.26
4.3.10.0020.0153.22
4.3.00.0070.01315.97

preferences:
145.79 ms | 1394 KiB | 7 Q