3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f() { return null; } var_dump( isset( f() ) );

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)
5.4.320.0100.05012.52
5.4.310.0060.04012.51
5.4.300.0060.04112.51
5.4.290.0030.04012.51
5.4.280.0040.04212.40
5.4.270.0030.03912.41
5.4.260.0030.03912.40
5.4.250.0040.03812.41
5.4.240.0090.03912.41
5.4.230.0030.03912.39
5.4.220.0070.03912.39
5.4.210.0050.03612.39
5.4.200.0060.03712.40
5.4.190.0060.03712.39
5.4.180.0070.03412.39
5.4.170.0020.04012.40
5.4.160.0080.03212.39
5.4.150.0090.03512.39
5.4.140.0050.04112.07
5.4.130.0030.04212.06
5.4.120.0050.04012.02
5.4.110.0040.04012.02
5.4.100.0090.03612.02
5.4.90.0040.04212.02
5.4.80.0060.04012.02
5.4.70.0050.03912.01
5.4.60.0030.03612.02
5.4.50.0020.03712.01
5.4.40.0040.03512.00
5.4.30.0040.03612.00
5.4.20.0080.03812.00
5.4.10.0050.03412.00
5.4.00.0060.04211.49
5.3.290.0130.05912.80
5.3.280.0060.04212.70
5.3.270.0040.03912.73
5.3.260.0110.03812.71
5.3.250.0020.03912.71
5.3.240.0040.03712.72
5.3.230.0050.03812.71
5.3.220.0080.04712.68
5.3.210.0060.04612.68
5.3.200.0030.03812.68
5.3.190.0040.03812.67
5.3.180.0050.03912.68
5.3.170.0060.03912.67
5.3.160.0040.03712.67
5.3.150.0090.03812.67
5.3.140.0070.03912.66
5.3.130.0060.04112.66
5.3.120.0070.03912.66
5.3.110.0070.04412.66
5.3.100.0090.03712.11
5.3.90.0050.03712.10
5.3.80.0080.03712.09
5.3.70.0060.03512.09
5.3.60.0060.04612.08
5.3.50.0040.03712.02
5.3.40.0080.03912.02
5.3.30.0060.03311.98
5.3.20.0040.03611.76
5.3.10.0050.03411.73
5.3.00.0040.04211.71
5.2.170.0050.0309.21
5.2.160.0040.0289.21
5.2.150.0020.0339.21
5.2.140.0040.0439.20
5.2.130.0060.0269.16
5.2.120.0040.0289.17
5.2.110.0050.0289.18
5.2.100.0050.0339.18
5.2.90.0070.0299.17
5.2.80.0050.0299.17
5.2.70.0040.0309.16
5.2.60.0030.0319.12
5.2.50.0030.0329.09
5.2.40.0080.0289.07
5.2.30.0070.0329.04
5.2.20.0020.0369.04
5.2.10.0050.0388.95
5.2.00.0050.0318.80
5.1.60.0040.0258.08
5.1.50.0090.0298.08
5.1.40.0050.0238.06
5.1.30.0030.0278.41
5.1.20.0030.0278.43
5.1.10.0020.0288.16
5.1.00.0030.0268.15
5.0.50.0040.0296.64
5.0.40.0040.0186.50
5.0.30.0040.0306.31
5.0.20.0040.0206.28
5.0.10.0060.0236.25
5.0.00.0040.0316.25
4.4.90.0030.0224.78
4.4.80.0040.0184.75
4.4.70.0070.0144.75
4.4.60.0030.0174.75
4.4.50.0000.0174.77
4.4.40.0010.0264.70
4.4.30.0020.0164.76
4.4.20.0020.0164.85
4.4.10.0050.0194.85
4.4.00.0010.0264.76
4.3.110.0040.0214.67
4.3.100.0030.0184.66
4.3.90.0030.0144.64
4.3.80.0030.0244.59
4.3.70.0030.0194.63
4.3.60.0030.0134.63
4.3.50.0040.0134.63
4.3.40.0030.0254.54
4.3.30.0040.0163.30
4.3.20.0000.0183.29
4.3.10.0000.0173.23
4.3.00.0000.03715.96

preferences:
142.36 ms | 1394 KiB | 7 Q