3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo (isset('$hello')) ? true : false; echo (!isset('$hello')) ? false : true;

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)
5.4.320.0040.03812.49
5.4.310.0060.03812.49
5.4.300.0070.03612.49
5.4.290.0090.03512.49
5.4.280.0050.03612.39
5.4.270.0080.03512.39
5.4.260.0060.04212.39
5.4.250.0070.03612.39
5.4.240.0060.03612.39
5.4.230.0060.03712.38
5.4.220.0080.03412.38
5.4.210.0080.03312.38
5.4.200.0080.03712.38
5.4.190.0070.03612.38
5.4.180.0050.03712.38
5.4.170.0090.03612.39
5.4.160.0030.03912.38
5.4.150.0050.04112.38
5.4.140.0060.03712.07
5.4.130.0030.04112.05
5.4.120.0060.04812.02
5.4.110.0100.04712.01
5.4.100.0070.03612.01
5.4.90.0050.03712.02
5.4.80.0070.03712.01
5.4.70.0070.03312.01
5.4.60.0030.03812.01
5.4.50.0050.03912.01
5.4.40.0080.03312.00
5.4.30.0040.03811.99
5.4.20.0060.03411.98
5.4.10.0070.03311.99
5.4.00.0020.04011.48
5.3.290.0050.04612.80
5.3.280.0060.03912.71
5.3.270.0050.04312.73
5.3.260.0090.03712.72
5.3.250.0050.04312.72
5.3.240.0060.04112.71
5.3.230.0070.03612.71
5.3.220.0050.03812.68
5.3.210.0040.04212.68
5.3.200.0080.03412.68
5.3.190.0030.04312.68
5.3.180.0070.03512.68
5.3.170.0030.04512.67
5.3.160.0050.03612.68
5.3.150.0070.03512.67
5.3.140.0080.03412.66
5.3.130.0060.03712.66
5.3.120.0140.02912.66
5.3.110.0050.03912.66
5.3.100.0040.03812.12
5.3.90.0060.03512.08
5.3.80.0040.03712.07
5.3.70.0070.03712.07
5.3.60.0030.03812.06
5.3.50.0080.03212.00
5.3.40.0070.03412.00
5.3.30.0050.04011.95
5.3.20.0080.03311.73
5.3.10.0070.03211.70
5.3.00.0070.03411.68
5.2.170.0110.0289.18
5.2.160.0030.0449.18
5.2.150.0050.0339.18
5.2.140.0060.0379.18
5.2.130.0030.0369.14
5.2.120.0040.0359.13
5.2.110.0070.0299.14
5.2.100.0080.0399.14
5.2.90.0060.0389.14
5.2.80.0050.0309.14
5.2.70.0020.0329.14
5.2.60.0050.0299.09
5.2.50.0070.0329.05
5.2.40.0030.0329.03
5.2.30.0020.0329.01
5.2.20.0060.0319.00
5.2.10.0040.0298.92
5.2.00.0040.0308.78
5.1.60.0030.0248.07
5.1.50.0050.0248.06
5.1.40.0030.0248.05
5.1.30.0070.0228.40
5.1.20.0030.0278.42
5.1.10.0040.0308.14
5.1.00.0070.0338.14
5.0.50.0020.0236.62
5.0.40.0030.0206.48
5.0.30.0030.0326.29
5.0.20.0010.0226.27
5.0.10.0060.0206.23
5.0.00.0050.0296.23
4.4.90.0040.0174.78
4.4.80.0030.0244.75
4.4.70.0030.0154.75
4.4.60.0010.0174.75
4.4.50.0050.0134.77
4.4.40.0040.0254.70
4.4.30.0030.0184.76
4.4.20.0020.0214.84
4.4.10.0040.0144.85
4.4.00.0040.0254.76
4.3.110.0010.0174.67
4.3.100.0010.0164.67
4.3.90.0050.0134.63
4.3.80.0010.0264.59
4.3.70.0010.0174.63
4.3.60.0020.0164.63
4.3.50.0030.0154.63
4.3.40.0010.0264.54
4.3.30.0010.0173.29
4.3.20.0050.0173.27
4.3.10.0020.0173.21
4.3.00.0130.01315.97

preferences:
142.72 ms | 1394 KiB | 7 Q