3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = NULL; is_null(var);

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)
5.4.340.0060.04012.01
5.4.320.0060.04012.49
5.4.310.0080.03812.49
5.4.300.0070.03612.50
5.4.290.0060.03812.49
5.4.280.0100.04312.39
5.4.270.0040.04012.39
5.4.260.0070.04112.39
5.4.250.0050.03912.39
5.4.240.0060.04012.39
5.4.230.0080.03812.38
5.4.220.0020.04712.38
5.4.210.0060.03412.38
5.4.200.0060.03912.38
5.4.190.0060.04212.38
5.4.180.0050.04212.38
5.4.170.0100.03412.39
5.4.160.0050.04012.38
5.4.150.0080.03412.38
5.4.140.0080.03812.07
5.4.130.0040.04012.05
5.4.120.0070.03512.01
5.4.110.0090.03212.02
5.4.100.0050.03612.01
5.4.90.0060.03612.01
5.4.80.0070.04012.01
5.4.70.0050.04212.01
5.4.60.0060.03512.00
5.4.50.0050.03612.00
5.4.40.0070.03612.00
5.4.30.0030.04311.99
5.4.20.0060.03611.99
5.4.10.0060.03411.99
5.4.00.0110.03311.48
5.3.290.0080.03812.80
5.3.280.0060.03912.71
5.3.270.0060.03912.72
5.3.260.0030.04212.72
5.3.250.0080.03612.72
5.3.240.0100.03412.72
5.3.230.0080.04012.70
5.3.220.0080.04112.68
5.3.210.0100.03612.68
5.3.200.0070.03912.68
5.3.190.0080.03612.68
5.3.180.0040.03912.67
5.3.170.0070.03912.66
5.3.160.0070.04112.67
5.3.150.0080.03912.67
5.3.140.0080.03512.66
5.3.130.0090.03612.66
5.3.120.0050.04212.66
5.3.110.0070.04512.66
5.3.100.0040.04112.12
5.3.90.0030.04012.09
5.3.80.0070.03812.08
5.3.70.0090.03912.07
5.3.60.0090.03912.06
5.3.50.0100.03912.00
5.3.40.0070.03612.00
5.3.30.0070.03511.95
5.3.20.0070.03611.72
5.3.10.0090.04211.70
5.3.00.0070.03611.68
5.2.170.0040.0319.18
5.2.160.0050.0309.18
5.2.150.0040.0319.19
5.2.140.0060.0299.18
5.2.130.0040.0299.14
5.2.120.0030.0329.14
5.2.110.0070.0279.14
5.2.100.0050.0289.14
5.2.90.0050.0339.14
5.2.80.0040.0309.14
5.2.70.0050.0299.14
5.2.60.0090.0309.09
5.2.50.0050.0309.06
5.2.40.0040.0309.03
5.2.30.0050.0309.01
5.2.20.0060.0279.00
5.2.10.0060.0278.93
5.2.00.0070.0308.78
5.1.60.0050.0268.06
5.1.50.0070.0248.06
5.1.40.0030.0288.04
5.1.30.0040.0288.40
5.1.20.0030.0298.41
5.1.10.0030.0268.14
5.1.00.0050.0248.14
5.0.50.0040.0206.62
5.0.40.0040.0246.48
5.0.30.0030.0326.29
5.0.20.0030.0206.27
5.0.10.0040.0246.24
5.0.00.0010.0346.23
4.4.90.0030.0154.78
4.4.80.0010.0164.75
4.4.70.0010.0184.76
4.4.60.0030.0164.76
4.4.50.0030.0164.77
4.4.40.0030.0264.71
4.4.30.0030.0164.76
4.4.20.0030.0174.85
4.4.10.0030.0204.84
4.4.00.0020.0254.76
4.3.110.0020.0164.67
4.3.100.0010.0164.67
4.3.90.0010.0164.63
4.3.80.0020.0244.58
4.3.70.0020.0154.63
4.3.60.0050.0124.63
4.3.50.0040.0144.62
4.3.40.0040.0224.54
4.3.30.0030.0153.29
4.3.20.0030.0153.27
4.3.10.0040.0163.22
4.3.00.0100.0207.17

preferences:
137.91 ms | 1394 KiB | 7 Q