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)
5.4.320.0060.04912.49
5.4.310.0040.04512.49
5.4.300.0070.03712.50
5.4.290.0030.04112.49
5.4.280.0090.03412.39
5.4.270.0040.04512.39
5.4.260.0040.04212.39
5.4.250.0080.04012.39
5.4.240.0100.03312.39
5.4.230.0060.03712.38
5.4.220.0080.03712.38
5.4.210.0090.03412.38
5.4.200.0090.03812.38
5.4.190.0100.03512.38
5.4.180.0050.04612.38
5.4.170.0080.03912.39
5.4.160.0040.04012.38
5.4.150.0050.03712.38
5.4.140.0050.03712.07
5.4.130.0070.03412.05
5.4.120.0030.03712.01
5.4.110.0060.03512.01
5.4.100.0080.03212.01
5.4.90.0080.03412.01
5.4.80.0070.04112.01
5.4.70.0060.03912.00
5.4.60.0060.03912.00
5.4.50.0050.04812.01
5.4.40.0070.04211.99
5.4.30.0060.03511.99
5.4.20.0040.03711.99
5.4.10.0090.03111.99
5.4.00.0090.04511.49
5.3.290.0060.04412.80
5.3.280.0060.03912.71
5.3.270.0050.04712.72
5.3.260.0050.04012.72
5.3.250.0060.03712.72
5.3.240.0030.04012.72
5.3.230.0040.03912.71
5.3.220.0080.05312.68
5.3.210.0060.04012.68
5.3.200.0050.04912.68
5.3.190.0020.04012.67
5.3.180.0040.03812.67
5.3.170.0080.03512.67
5.3.160.0050.03912.67
5.3.150.0070.03912.68
5.3.140.0040.03912.66
5.3.130.0050.04012.66
5.3.120.0080.03712.66
5.3.110.0080.03612.66
5.3.100.0060.03712.12
5.3.90.0030.03912.08
5.3.80.0110.03712.07
5.3.70.0040.04212.07
5.3.60.0060.03612.06
5.3.50.0050.03712.00
5.3.40.0040.03912.00
5.3.30.0080.03211.95
5.3.20.0070.03411.72
5.3.10.0040.03611.70
5.3.00.0080.03511.68
5.2.170.0050.0309.18
5.2.160.0040.0299.18
5.2.150.0040.0319.18
5.2.140.0030.0329.18
5.2.130.0060.0279.14
5.2.120.0030.0319.14
5.2.110.0060.0309.14
5.2.100.0030.0309.14
5.2.90.0060.0309.14
5.2.80.0060.0319.14
5.2.70.0060.0299.14
5.2.60.0040.0319.09
5.2.50.0050.0329.06
5.2.40.0060.0329.04
5.2.30.0080.0429.02
5.2.20.0030.0309.00
5.2.10.0060.0278.93
5.2.00.0050.0288.78
5.1.60.0050.0298.06
5.1.50.0080.0238.06
5.1.40.0040.0258.04
5.1.30.0060.0248.40
5.1.20.0050.0268.41
5.1.10.0040.0258.14
5.1.00.0040.0258.14
5.0.50.0060.0176.62
5.0.40.0020.0206.48
5.0.30.0010.0376.29
5.0.20.0040.0196.26
5.0.10.0030.0256.23
5.0.00.0020.0326.23
4.4.90.0020.0164.78
4.4.80.0000.0184.75
4.4.70.0010.0174.76
4.4.60.0010.0174.75
4.4.50.0020.0164.77
4.4.40.0030.0254.71
4.4.30.0040.0144.76
4.4.20.0010.0174.84
4.4.10.0020.0174.85
4.4.00.0030.0264.76
4.3.110.0020.0194.67
4.3.100.0030.0154.66
4.3.90.0040.0144.63
4.3.80.0020.0254.59
4.3.70.0030.0154.63
4.3.60.0020.0154.63
4.3.50.0020.0164.63
4.3.40.0020.0244.54
4.3.30.0000.0173.29
4.3.20.0020.0163.27
4.3.10.0030.0143.21
4.3.00.0000.02015.97

preferences:
141.45 ms | 1394 KiB | 7 Q