3v4l.org

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

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)
5.4.320.0060.03612.50
5.4.310.0050.04012.50
5.4.300.0050.04112.50
5.4.290.0080.04512.49
5.4.280.0070.03912.39
5.4.270.0000.04612.39
5.4.260.0050.03912.39
5.4.250.0070.04012.39
5.4.240.0070.03512.39
5.4.230.0050.04112.38
5.4.220.0060.04312.38
5.4.210.0100.04012.38
5.4.200.0040.04312.38
5.4.190.0080.03512.38
5.4.180.0080.03412.38
5.4.170.0060.04012.39
5.4.160.0060.04112.38
5.4.150.0030.04112.38
5.4.140.0080.04412.07
5.4.130.0100.03712.05
5.4.120.0120.04012.01
5.4.110.0090.05112.01
5.4.100.0090.03712.01
5.4.90.0080.04012.01
5.4.80.0060.04012.01
5.4.70.0060.04012.00
5.4.60.0080.03612.00
5.4.50.0070.03712.00
5.4.40.0070.03611.99
5.4.30.0050.03811.99
5.4.20.0090.04111.99
5.4.10.0110.05212.00
5.4.00.0080.05811.48
5.3.290.0080.05712.80
5.3.280.0080.04312.71
5.3.270.0100.05412.72
5.3.260.0200.05712.72
5.3.250.0080.05712.72
5.3.240.0150.05512.72
5.3.230.0380.07712.71
5.3.220.0200.07812.68
5.3.210.0200.06712.68
5.3.200.0080.05212.68
5.3.190.0070.04512.68
5.3.180.0100.04912.67
5.3.170.0100.04912.67
5.3.160.0070.04112.68
5.3.150.0100.04812.67
5.3.140.0110.03812.66
5.3.130.0070.05012.66
5.3.120.0070.04612.66
5.3.110.0150.05612.65
5.3.100.0150.08812.12
5.3.90.0130.06112.08
5.3.80.0230.07212.08
5.3.70.0140.07012.07
5.3.60.0090.05312.06
5.3.50.0180.06712.00
5.3.40.0090.04712.00
5.3.30.0090.04911.95
5.3.20.0070.04711.72
5.3.10.0090.04411.70
5.3.00.0120.04411.68
5.2.170.0170.0689.18
5.2.160.0070.0359.18
5.2.150.0050.0349.18
5.2.140.0110.0379.18
5.2.130.0060.0389.14
5.2.120.0060.0399.14
5.2.110.0050.0309.15
5.2.100.0040.0329.14
5.2.90.0070.0289.14
5.2.80.0030.0329.14
5.2.70.0070.0299.14
5.2.60.0070.0329.09
5.2.50.0080.0329.05
5.2.40.0070.0419.03
5.2.30.0070.0369.01
5.2.20.0080.0349.00
5.2.10.0030.0318.92
5.2.00.0060.0288.78
5.1.60.0050.0258.07
5.1.50.0070.0278.06
5.1.40.0050.0408.04
5.1.30.0160.0848.40
5.1.20.0200.0408.42
5.1.10.0030.0308.14
5.1.00.0050.0278.14
5.0.50.0040.0276.62
5.0.40.0060.0256.47
5.0.30.0020.0546.29
5.0.20.0090.0216.27
5.0.10.0040.0236.23
5.0.00.0030.0366.23
4.4.90.0050.0154.78
4.4.80.0040.0154.75
4.4.70.0040.0154.76
4.4.60.0020.0184.75
4.4.50.0020.0174.77
4.4.40.0040.0314.71
4.4.30.0040.0234.76
4.4.20.0020.0254.84
4.4.10.0020.0244.85
4.4.00.0030.0264.76
4.3.110.0040.0164.67
4.3.100.0010.0174.66
4.3.90.0040.0174.63
4.3.80.0020.0274.58
4.3.70.0030.0194.63
4.3.60.0070.0204.63
4.3.50.0060.0144.63
4.3.40.0020.0264.54
4.3.30.0060.0213.29
4.3.20.0020.0213.27
4.3.10.0040.0163.22
4.3.00.0030.01315.97

preferences:
140.46 ms | 1394 KiB | 7 Q