3v4l.org

run code in 300+ PHP versions simultaneously
<?php var a = " "; var_dump(empty(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)
5.4.340.0060.03312.01
5.4.320.0040.03712.50
5.4.310.0050.03912.49
5.4.300.0070.03512.50
5.4.290.0100.03312.49
5.4.280.0050.03612.39
5.4.270.0070.04012.39
5.4.260.0080.03412.39
5.4.250.0040.03912.39
5.4.240.0040.03812.39
5.4.230.0110.03412.38
5.4.220.0020.04212.38
5.4.210.0060.03812.38
5.4.200.0040.03912.38
5.4.190.0070.03812.38
5.4.180.0040.03812.38
5.4.170.0040.03812.38
5.4.160.0030.03812.38
5.4.150.0050.03612.38
5.4.140.0030.04012.07
5.4.130.0080.04412.05
5.4.120.0030.03712.02
5.4.110.0050.03512.01
5.4.100.0070.03512.01
5.4.90.0040.03812.01
5.4.80.0070.03612.01
5.4.70.0060.03412.00
5.4.60.0030.03712.00
5.4.50.0050.03512.01
5.4.40.0050.03512.00
5.4.30.0050.03511.99
5.4.20.0060.03411.99
5.4.10.0060.03311.99
5.4.00.0050.03611.48
5.3.290.0050.03912.80
5.3.280.0080.04912.71
5.3.270.0060.04512.72
5.3.260.0060.03912.72
5.3.250.0060.03612.71
5.3.240.0100.03312.72
5.3.230.0040.03912.70
5.3.220.0030.04012.68
5.3.210.0060.03812.68
5.3.200.0050.04212.68
5.3.190.0060.03712.68
5.3.180.0090.03312.68
5.3.170.0070.03512.67
5.3.160.0050.03812.68
5.3.150.0050.03912.67
5.3.140.0050.04512.66
5.3.130.0040.04512.66
5.3.120.0060.03812.66
5.3.110.0110.03612.66
5.3.100.0100.03912.12
5.3.90.0020.04912.08
5.3.80.0040.03812.07
5.3.70.0050.04312.07
5.3.60.0060.03612.06
5.3.50.0050.03612.00
5.3.40.0060.03512.00
5.3.30.0090.03211.95
5.3.20.0080.03411.72
5.3.10.0060.03511.70
5.3.00.0050.03711.68
5.2.170.0060.0299.18
5.2.160.0040.0309.18
5.2.150.0060.0309.18
5.2.140.0060.0299.18
5.2.130.0030.0309.14
5.2.120.0020.0329.14
5.2.110.0050.0299.15
5.2.100.0050.0309.14
5.2.90.0050.0299.14
5.2.80.0010.0349.14
5.2.70.0060.0309.14
5.2.60.0060.0309.09
5.2.50.0030.0349.05
5.2.40.0100.0269.03
5.2.30.0040.0309.01
5.2.20.0050.0289.00
5.2.10.0060.0268.93
5.2.00.0070.0258.78
5.1.60.0050.0228.07
5.1.50.0030.0258.06
5.1.40.0040.0248.05
5.1.30.0050.0258.40
5.1.20.0040.0268.42
5.1.10.0040.0268.14
5.1.00.0040.0268.14
5.0.50.0030.0206.63
5.0.40.0030.0256.48
5.0.30.0030.0316.29
5.0.20.0030.0196.27
5.0.10.0050.0216.23
5.0.00.0050.0296.23
4.4.90.0040.0144.78
4.4.80.0030.0144.76
4.4.70.0020.0154.75
4.4.60.0050.0124.76
4.4.50.0010.0174.77
4.4.40.0030.0294.71
4.4.30.0030.0154.76
4.4.20.0060.0124.84
4.4.10.0030.0154.85
4.4.00.0030.0254.76
4.3.110.0020.0244.66
4.3.100.0030.0194.66
4.3.90.0030.0214.63
4.3.80.0040.0254.59
4.3.70.0040.0134.63
4.3.60.0010.0164.63
4.3.50.0030.0154.63
4.3.40.0010.0254.54
4.3.30.0020.0163.29
4.3.20.0000.0183.26
4.3.10.0020.0203.21
4.3.00.0030.0207.28

preferences:
143.33 ms | 1394 KiB | 7 Q