3v4l.org

run code in 300+ PHP versions simultaneously
<?php if(isset(null)) { echo "true\n"; } else { echo "false\n"; }

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)
5.4.310.0060.04312.50
5.4.300.0070.03512.50
5.4.290.0020.04612.49
5.4.280.0030.03812.39
5.4.270.0080.03812.39
5.4.260.0110.04112.39
5.4.250.0070.04012.39
5.4.240.0050.04012.39
5.4.230.0050.04712.38
5.4.220.0100.04412.38
5.4.210.0070.04212.38
5.4.200.0030.04512.38
5.4.190.0090.03512.38
5.4.180.0110.03912.38
5.4.170.0100.04512.39
5.4.160.0080.03412.38
5.4.150.0090.04112.38
5.4.140.0080.04212.07
5.4.130.0090.04012.05
5.4.120.0090.03812.01
5.4.110.0060.03612.02
5.4.100.0090.03212.01
5.4.90.0090.03612.01
5.4.80.0110.04012.01
5.4.70.0040.03612.00
5.4.60.0080.04112.01
5.4.50.0050.03612.01
5.4.40.0050.04011.99
5.4.30.0080.03411.99
5.4.20.0070.04011.99
5.4.10.0090.04911.99
5.4.00.0070.03511.48
5.3.280.0090.04212.71
5.3.270.0100.04212.72
5.3.260.0080.04112.72
5.3.250.0070.04112.72
5.3.240.0100.04512.72
5.3.230.0080.03612.71
5.3.220.0080.04212.68
5.3.210.0100.04512.68
5.3.200.0050.04512.68
5.3.190.0110.03212.68
5.3.180.0060.04012.68
5.3.170.0050.04112.67
5.3.160.0040.04312.67
5.3.150.0100.04412.67
5.3.140.0070.03912.66
5.3.130.0070.04112.65
5.3.120.0070.04112.66
5.3.110.0080.04912.66
5.3.100.0040.04012.12
5.3.90.0070.04612.08
5.3.80.0080.04012.08
5.3.70.0060.05212.07
5.3.60.0070.03912.06
5.3.50.0070.04412.00
5.3.40.0070.04112.00
5.3.30.0080.03611.95
5.3.20.0100.03511.72
5.3.10.0020.04811.70
5.3.00.0070.03411.68
5.2.170.0060.0309.18
5.2.160.0030.0339.18
5.2.150.0070.0289.18
5.2.140.0050.0379.18
5.2.130.0050.0309.14
5.2.120.0080.0329.14
5.2.110.0060.0309.14
5.2.100.0040.0319.14
5.2.90.0110.0359.14
5.2.80.0060.0419.14
5.2.70.0060.0339.14
5.2.60.0060.0359.09
5.2.50.0080.0309.06
5.2.40.0060.0339.03
5.2.30.0040.0369.01
5.2.20.0040.0299.00
5.2.10.0040.0338.92
5.2.00.0060.0318.79
5.1.60.0070.0288.07
5.1.50.0050.0248.06
5.1.40.0060.0228.05
5.1.30.0050.0258.40
5.1.20.0040.0278.42
5.1.10.0060.0378.14
5.1.00.0110.0258.14
5.0.50.0030.0286.62
5.0.40.0040.0246.48
5.0.30.0050.0326.29
5.0.20.0060.0236.26
5.0.10.0070.0176.24
5.0.00.0050.0306.23
4.4.90.0030.0154.78
4.4.80.0010.0194.75
4.4.70.0030.0214.76
4.4.60.0030.0154.75
4.4.50.0040.0264.77
4.4.40.0020.0324.71
4.4.30.0020.0224.75
4.4.20.0050.0244.84
4.4.10.0020.0224.84
4.4.00.0020.0364.75
4.3.110.0030.0234.67
4.3.100.0050.0174.66
4.3.90.0010.0194.63
4.3.80.0040.0344.59
4.3.70.0040.0164.63
4.3.60.0020.0204.63
4.3.50.0020.0234.63
4.3.40.0040.0274.54
4.3.30.0010.0173.29
4.3.20.0030.0163.27
4.3.10.0010.0243.22
4.3.00.0200.0177.17

preferences:
133.96 ms | 1394 KiB | 7 Q