3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; var_dump isset($a);

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)
5.4.320.0040.03912.50
5.4.310.0070.03812.49
5.4.300.0090.04612.50
5.4.290.0090.05012.50
5.4.280.0060.05012.39
5.4.270.0110.04912.39
5.4.260.0060.04012.39
5.4.250.0090.04612.39
5.4.240.0090.04012.39
5.4.230.0050.04212.38
5.4.220.0050.03812.38
5.4.210.0060.03412.38
5.4.200.0100.03212.38
5.4.190.0070.03412.38
5.4.180.0040.03812.38
5.4.170.0070.03512.38
5.4.160.0070.04712.38
5.4.150.0050.04112.38
5.4.140.0050.03812.07
5.4.130.0050.03612.05
5.4.120.0100.03812.01
5.4.110.0070.04912.01
5.4.100.0070.04712.01
5.4.90.0070.03712.01
5.4.80.0080.04012.01
5.4.70.0080.03512.00
5.4.60.0060.03712.00
5.4.50.0090.04712.00
5.4.40.0090.05012.00
5.4.30.0040.04111.99
5.4.20.0030.04011.99
5.4.10.0050.03711.99
5.4.00.0090.03311.49
5.3.290.0120.03412.80
5.3.280.0090.03512.71
5.3.270.0060.03912.72
5.3.260.0060.04012.72
5.3.250.0080.03612.72
5.3.240.0070.03612.72
5.3.230.0070.03912.70
5.3.220.0040.04112.68
5.3.210.0080.03712.68
5.3.200.0080.03612.68
5.3.190.0080.04012.68
5.3.180.0030.04912.67
5.3.170.0060.03812.67
5.3.160.0050.04712.67
5.3.150.0100.03312.67
5.3.140.0090.04112.66
5.3.130.0060.04312.66
5.3.120.0040.04012.66
5.3.110.0040.04012.66
5.3.100.0060.05312.12
5.3.90.0040.04112.08
5.3.80.0070.03512.07
5.3.70.0080.03912.08
5.3.60.0030.03912.07
5.3.50.0040.03712.00
5.3.40.0080.03412.00
5.3.30.0040.03511.95
5.3.20.0020.03811.72
5.3.10.0020.03811.70
5.3.00.0060.03911.68
5.2.170.0040.0309.18
5.2.160.0020.0319.18
5.2.150.0030.0339.18
5.2.140.0020.0339.18
5.2.130.0040.0299.14
5.2.120.0070.0259.13
5.2.110.0060.0269.15
5.2.100.0030.0309.14
5.2.90.0030.0299.14
5.2.80.0010.0339.14
5.2.70.0020.0329.14
5.2.60.0060.0289.09
5.2.50.0040.0319.06
5.2.40.0040.0289.04
5.2.30.0050.0289.02
5.2.20.0090.0359.00
5.2.10.0030.0358.93
5.2.00.0050.0288.78
5.1.60.0020.0268.07
5.1.50.0040.0248.06
5.1.40.0040.0248.05
5.1.30.0060.0238.40
5.1.20.0050.0258.41
5.1.10.0020.0278.14
5.1.00.0030.0268.14
5.0.50.0020.0216.62
5.0.40.0040.0186.48
5.0.30.0040.0306.29
5.0.20.0040.0196.26
5.0.10.0060.0206.24
5.0.00.0020.0326.23
4.4.90.0030.0154.78
4.4.80.0060.0124.76
4.4.70.0020.0164.75
4.4.60.0030.0154.75
4.4.50.0050.0124.77
4.4.40.0030.0254.71
4.4.30.0030.0154.76
4.4.20.0030.0154.85
4.4.10.0020.0154.85
4.4.00.0040.0234.76
4.3.110.0030.0154.67
4.3.100.0030.0144.66
4.3.90.0050.0124.64
4.3.80.0020.0314.59
4.3.70.0020.0154.63
4.3.60.0010.0164.63
4.3.50.0040.0144.62
4.3.40.0050.0214.54
4.3.30.0030.0143.28
4.3.20.0000.0173.26
4.3.10.0020.0153.21
4.3.00.0030.0176.19

preferences:
140.36 ms | 1394 KiB | 7 Q