3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('%a%', 1, -1),

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)
5.4.320.0040.03612.46
5.4.310.0060.03612.46
5.4.300.0080.03312.47
5.4.290.0050.03712.46
5.4.280.0020.03712.36
5.4.270.0050.03612.36
5.4.260.0060.04412.36
5.4.250.0060.04612.36
5.4.240.0060.03512.36
5.4.230.0070.03612.35
5.4.220.0060.04012.35
5.4.210.0050.03512.35
5.4.200.0080.03612.35
5.4.190.0060.03712.35
5.4.180.0060.04112.34
5.4.170.0040.04012.36
5.4.160.0100.03212.36
5.4.150.0050.03612.35
5.4.140.0050.03812.04
5.4.130.0050.03612.02
5.4.120.0030.03911.99
5.4.110.0090.04111.98
5.4.100.0060.03411.98
5.4.90.0050.03611.98
5.4.80.0090.03311.98
5.4.70.0050.03711.98
5.4.60.0060.03611.97
5.4.50.0070.03311.98
5.4.40.0060.03411.96
5.4.30.0060.04211.96
5.4.20.0060.03511.95
5.4.10.0070.03611.96
5.4.00.0060.03711.45
5.3.290.0050.04712.80
5.3.280.0070.04312.71
5.3.270.0080.04212.73
5.3.260.0070.03712.72
5.3.250.0060.03712.71
5.3.240.0080.04512.72
5.3.230.0050.03812.71
5.3.220.0060.03712.68
5.3.210.0050.04112.68
5.3.200.0050.04612.68
5.3.190.0050.03812.68
5.3.180.0040.04212.68
5.3.170.0040.03812.66
5.3.160.0050.03612.67
5.3.150.0030.04012.67
5.3.140.0020.03912.66
5.3.130.0020.04312.66
5.3.120.0040.05412.65
5.3.110.0040.04412.66
5.3.100.0030.03912.12
5.3.90.0040.03712.08
5.3.80.0050.03612.08
5.3.70.0080.03512.08
5.3.60.0050.03612.06
5.3.50.0060.03612.00
5.3.40.0050.03612.00
5.3.30.0060.03411.95
5.3.20.0080.03511.73
5.3.10.0040.04011.70
5.3.00.0070.03911.68
5.2.170.0030.0319.18
5.2.160.0030.0339.18
5.2.150.0070.0329.18
5.2.140.0050.0299.18
5.2.130.0040.0289.14
5.2.120.0030.0339.14
5.2.110.0070.0309.15
5.2.100.0080.0249.14
5.2.90.0040.0299.14
5.2.80.0060.0299.14
5.2.70.0050.0329.14
5.2.60.0060.0309.09
5.2.50.0030.0329.06
5.2.40.0050.0289.04
5.2.30.0040.0319.02
5.2.20.0030.0309.00
5.2.10.0060.0368.92
5.2.00.0050.0308.79
5.1.60.0050.0278.07
5.1.50.0040.0268.06
5.1.40.0060.0228.05
5.1.30.0030.0268.40
5.1.20.0030.0268.42
5.1.10.0050.0258.14
5.1.00.0030.0278.14
5.0.50.0060.0176.63
5.0.40.0020.0206.48
5.0.30.0020.0326.29
5.0.20.0030.0236.27
5.0.10.0070.0336.24
5.0.00.0060.0356.23
4.4.90.0030.0204.78
4.4.80.0040.0174.76
4.4.70.0080.0454.76
4.4.60.0040.0204.75
4.4.50.0030.0204.77
4.4.40.0020.0334.70
4.4.30.0020.0164.76
4.4.20.0040.0144.85
4.4.10.0010.0174.85
4.4.00.0020.0254.76
4.3.110.0040.0144.67
4.3.100.0050.0124.66
4.3.90.0030.0194.63
4.3.80.0040.0254.58
4.3.70.0040.0134.63
4.3.60.0020.0154.63
4.3.50.0050.0154.63
4.3.40.0050.0284.54
4.3.30.0020.0213.28
4.3.20.0010.0163.26
4.3.10.0030.0143.21
4.3.00.0270.01314.30

preferences:
142.9 ms | 1394 KiB | 7 Q