3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(isset('a', ['a' => null]));

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)
5.4.310.0090.03612.49
5.4.300.0050.03912.50
5.4.290.0090.04012.50
5.4.280.0050.03812.39
5.4.270.0050.03812.39
5.4.260.0040.04212.39
5.4.250.0070.03712.39
5.4.240.0030.04012.39
5.4.230.0060.03812.38
5.4.220.0060.03612.38
5.4.210.0050.03612.38
5.4.200.0040.04012.38
5.4.190.0040.03912.38
5.4.180.0040.03712.38
5.4.170.0070.03312.38
5.4.160.0040.03612.38
5.4.150.0070.03312.38
5.4.140.0030.03812.07
5.4.130.0040.03612.05
5.4.120.0030.03812.02
5.4.110.0050.03712.01
5.4.100.0040.04012.01
5.4.90.0080.03512.01
5.4.80.0070.03612.01
5.4.70.0030.03712.01
5.4.60.0050.03612.01
5.4.50.0080.03212.00
5.4.40.0040.03612.00
5.4.30.0060.03511.99
5.4.20.0020.03911.98
5.4.10.0070.04511.99
5.4.00.0060.03611.48
5.3.290.0060.03912.80
5.3.280.0060.03812.70
5.3.270.0060.04212.73
5.3.260.0090.03512.72
5.3.250.0060.03612.72
5.3.240.0080.03612.72
5.3.230.0050.03912.71
5.3.220.0050.03812.68
5.3.210.0060.03912.68
5.3.200.0070.03512.68
5.3.190.0070.03612.68
5.3.180.0100.03712.67
5.3.170.0110.04212.66
5.3.160.0060.04812.68
5.3.150.0050.03812.68
5.3.140.0040.03712.66
5.3.130.0070.03612.65
5.3.120.0030.04212.66
5.3.110.0050.04012.65
5.3.100.0040.03912.12
5.3.90.0080.03412.08
5.3.80.0080.03412.08
5.3.70.0030.03912.08
5.3.60.0070.03512.06
5.3.50.0050.03712.00
5.3.40.0050.03712.00
5.3.30.0060.03511.95
5.3.20.0110.03011.72
5.3.10.0060.04911.70
5.3.00.0060.05311.68
5.2.170.0070.0439.18
5.2.160.0040.0419.18
5.2.150.0070.0309.18
5.2.140.0040.0319.18
5.2.130.0070.0269.14
5.2.120.0080.0269.14
5.2.110.0020.0319.15
5.2.100.0040.0299.14
5.2.90.0060.0299.14
5.2.80.0050.0309.14
5.2.70.0070.0319.14
5.2.60.0040.0359.09
5.2.50.0060.0299.06
5.2.40.0060.0279.03
5.2.30.0070.0289.02
5.2.20.0060.0269.00
5.2.10.0050.0288.93
5.2.00.0040.0298.79
5.1.60.0010.0268.07
5.1.50.0050.0238.06
5.1.40.0020.0268.05
5.1.30.0040.0278.39
5.1.20.0050.0268.41
5.1.10.0050.0268.14
5.1.00.0030.0288.14
5.0.50.0020.0256.62
5.0.40.0050.0226.47
5.0.30.0030.0396.29
5.0.20.0020.0276.26
5.0.10.0060.0276.24
5.0.00.0040.0326.23
4.4.90.0030.0204.78
4.4.80.0020.0154.75
4.4.70.0020.0164.75
4.4.60.0040.0144.75
4.4.50.0040.0144.77
4.4.40.0040.0244.70
4.4.30.0010.0174.76
4.4.20.0030.0164.84
4.4.10.0020.0164.84
4.4.00.0020.0264.76
4.3.110.0030.0154.67
4.3.100.0030.0154.66
4.3.90.0030.0144.64
4.3.80.0020.0264.59
4.3.70.0040.0144.63
4.3.60.0040.0134.63
4.3.50.0020.0174.63
4.3.40.0060.0254.54
4.3.30.0050.0153.29
4.3.20.0040.0163.27
4.3.10.0020.0163.21
4.3.00.0030.0207.12

preferences:
142.35 ms | 1394 KiB | 7 Q