3v4l.org

run code in 300+ PHP versions simultaneously
<?php print_r(var_dump(isset(false)));

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)
5.4.320.0080.03312.50
5.4.310.0050.03812.49
5.4.300.0070.03612.49
5.4.290.0080.03512.49
5.4.280.0030.03812.39
5.4.270.0040.03712.39
5.4.260.0060.03812.39
5.4.250.0070.03512.39
5.4.240.0070.03512.39
5.4.230.0050.03912.38
5.4.220.0060.03612.38
5.4.210.0070.03412.38
5.4.200.0070.03512.38
5.4.190.0050.03612.38
5.4.180.0040.03712.38
5.4.170.0030.03912.38
5.4.160.0050.03712.38
5.4.150.0070.03512.38
5.4.140.0040.03812.07
5.4.130.0080.03212.05
5.4.120.0040.03612.01
5.4.110.0070.03512.01
5.4.100.0050.03512.01
5.4.90.0040.03812.01
5.4.80.0130.03012.01
5.4.70.0130.02812.01
5.4.60.0090.03212.01
5.4.50.0050.03612.00
5.4.40.0050.03812.00
5.4.30.0060.03511.99
5.4.20.0150.02611.99
5.4.10.0050.03511.99
5.4.00.0040.03711.48
5.3.290.0070.04712.80
5.3.280.0050.03912.71
5.3.270.0100.03512.72
5.3.260.0090.04012.72
5.3.250.0040.03912.72
5.3.240.0050.03712.72
5.3.230.0070.04012.71
5.3.220.0060.04712.68
5.3.210.0040.04212.68
5.3.200.0060.04312.68
5.3.190.0090.03812.67
5.3.180.0040.04012.67
5.3.170.0050.03712.67
5.3.160.0100.03312.67
5.3.150.0020.04112.67
5.3.140.0050.04512.66
5.3.130.0040.04012.66
5.3.120.0060.04812.66
5.3.110.0070.03912.66
5.3.100.0080.04412.12
5.3.90.0070.03812.08
5.3.80.0070.03812.07
5.3.70.0070.03512.07
5.3.60.0090.04012.06
5.3.50.0110.04212.00
5.3.40.0070.04112.00
5.3.30.0110.03211.95
5.3.20.0080.03611.72
5.3.10.0050.04011.70
5.3.00.0080.03811.68
5.2.170.0050.0329.18
5.2.160.0060.0289.18
5.2.150.0040.0329.18
5.2.140.0040.0319.18
5.2.130.0060.0289.14
5.2.120.0070.0269.14
5.2.110.0060.0289.14
5.2.100.0060.0279.14
5.2.90.0040.0309.14
5.2.80.0070.0299.14
5.2.70.0060.0299.14
5.2.60.0070.0289.09
5.2.50.0050.0309.06
5.2.40.0060.0279.03
5.2.30.0040.0319.01
5.2.20.0050.0369.01
5.2.10.0050.0318.93
5.2.00.0060.0298.78
5.1.60.0030.0268.07
5.1.50.0030.0268.06
5.1.40.0080.0268.05
5.1.30.0040.0308.40
5.1.20.0040.0298.42
5.1.10.0050.0328.14
5.1.00.0030.0278.14
5.0.50.0030.0236.62
5.0.40.0030.0206.48
5.0.30.0030.0336.29
5.0.20.0030.0206.27
5.0.10.0020.0216.24
5.0.00.0040.0406.23
4.4.90.0020.0164.78
4.4.80.0030.0164.75
4.4.70.0050.0194.75
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0030.0284.71
4.4.30.0020.0194.75
4.4.20.0030.0154.84
4.4.10.0030.0154.85
4.4.00.0040.0254.76
4.3.110.0020.0164.67
4.3.100.0000.0204.66
4.3.90.0030.0164.64
4.3.80.0040.0244.58
4.3.70.0040.0134.63
4.3.60.0020.0194.63
4.3.50.0030.0154.63
4.3.40.0040.0264.54
4.3.30.0020.0163.29
4.3.20.0010.0173.27
4.3.10.0040.0153.21
4.3.00.0030.01715.97

preferences:
141.35 ms | 1386 KiB | 7 Q