3v4l.org

run code in 300+ PHP versions simultaneously
<?php $heading = 'h2'; $heading *= 8; echo $heading

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)
5.4.320.0070.03512.47
5.4.310.0070.03712.46
5.4.300.0050.03812.47
5.4.290.0040.03912.46
5.4.280.0030.04412.36
5.4.270.0050.03612.36
5.4.260.0050.03712.36
5.4.250.0070.03612.36
5.4.240.0070.03612.36
5.4.230.0090.03812.35
5.4.220.0090.04212.36
5.4.210.0050.03612.36
5.4.200.0070.04712.36
5.4.190.0060.03812.35
5.4.180.0090.04512.35
5.4.170.0080.03412.36
5.4.160.0110.04212.36
5.4.150.0070.03712.35
5.4.140.0070.03612.04
5.4.130.0060.03612.02
5.4.120.0060.03611.98
5.4.110.0040.04311.98
5.4.100.0050.03611.98
5.4.90.0060.03611.98
5.4.80.0050.03811.98
5.4.70.0050.03511.98
5.4.60.0030.03811.98
5.4.50.0070.03211.98
5.4.40.0030.03611.96
5.4.30.0080.03311.96
5.4.20.0070.03811.96
5.4.10.0070.03311.96
5.4.00.0080.03911.46
5.3.290.0070.03712.80
5.3.280.0120.04712.71
5.3.270.0070.03812.72
5.3.260.0070.03712.72
5.3.250.0080.03412.72
5.3.240.0070.03612.72
5.3.230.0100.04512.71
5.3.220.0060.03612.68
5.3.210.0060.03812.68
5.3.200.0070.03512.68
5.3.190.0060.03712.68
5.3.180.0050.03712.68
5.3.170.0060.03612.66
5.3.160.0070.03412.68
5.3.150.0030.04012.68
5.3.140.0060.03612.66
5.3.130.0050.03912.66
5.3.120.0050.03912.66
5.3.110.0060.03812.66
5.3.100.0070.03512.12
5.3.90.0020.04012.09
5.3.80.0040.03812.08
5.3.70.0070.03412.08
5.3.60.0060.04212.06
5.3.50.0060.03512.00
5.3.40.0040.03812.00
5.3.30.0050.03511.95
5.3.20.0060.03511.72
5.3.10.0040.03711.70
5.3.00.0060.03511.68
5.2.170.0040.0319.18
5.2.160.0050.0299.18
5.2.150.0060.0309.18
5.2.140.0040.0319.18
5.2.130.0060.0279.14
5.2.120.0030.0299.14
5.2.110.0060.0329.14
5.2.100.0040.0349.14
5.2.90.0030.0309.14
5.2.80.0040.0309.14
5.2.70.0060.0299.14
5.2.60.0050.0339.09
5.2.50.0040.0359.06
5.2.40.0050.0299.04
5.2.30.0040.0319.01
5.2.20.0040.0309.00
5.2.10.0110.0228.92
5.2.00.0050.0298.78
5.1.60.0040.0248.07
5.1.50.0030.0268.06
5.1.40.0030.0258.05
5.1.30.0020.0288.40
5.1.20.0080.0238.42
5.1.10.0090.0278.14
5.1.00.0070.0268.14
5.0.50.0050.0206.62
5.0.40.0050.0196.48
5.0.30.0010.0336.29
5.0.20.0010.0216.27
5.0.10.0040.0196.24
5.0.00.0040.0306.23
4.4.90.0040.0164.78
4.4.80.0040.0164.76
4.4.70.0010.0204.75
4.4.60.0040.0154.75
4.4.50.0040.0134.77
4.4.40.0060.0224.70
4.4.30.0000.0174.76
4.4.20.0040.0194.85
4.4.10.0030.0184.85
4.4.00.0070.0294.75
4.3.110.0030.0154.67
4.3.100.0030.0164.67
4.3.90.0040.0134.63
4.3.80.0030.0284.58
4.3.70.0030.0204.63
4.3.60.0040.0134.63
4.3.50.0050.0134.63
4.3.40.0010.0264.54
4.3.30.0020.0163.29
4.3.20.0020.0173.27
4.3.10.0030.0153.21
4.3.00.0030.01318.41

preferences:
144.43 ms | 1398 KiB | 8 Q