3v4l.org

run code in 300+ PHP versions simultaneously
<?php $exists = isset($a); $exists ? echo "SI": var_dump("NO");

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)
5.4.320.0100.03212.49
5.4.310.0070.03712.49
5.4.300.0080.03512.50
5.4.290.0040.03912.49
5.4.280.0050.03612.39
5.4.270.0070.03412.39
5.4.260.0060.03712.39
5.4.250.0050.03812.39
5.4.240.0050.03612.39
5.4.230.0070.03512.38
5.4.220.0040.03712.38
5.4.210.0050.03612.38
5.4.200.0100.03412.38
5.4.190.0070.03512.38
5.4.180.0060.03512.38
5.4.170.0100.03112.38
5.4.160.0060.03912.38
5.4.150.0090.03512.38
5.4.140.0060.03712.07
5.4.130.0070.03512.05
5.4.120.0050.03712.02
5.4.110.0070.03412.01
5.4.100.0030.03712.01
5.4.90.0060.03612.01
5.4.80.0030.03912.01
5.4.70.0060.03312.01
5.4.60.0060.03412.01
5.4.50.0070.03412.01
5.4.40.0080.03111.99
5.4.30.0050.03511.99
5.4.20.0040.03611.99
5.4.10.0080.03112.00
5.4.00.0090.03311.48
5.3.290.0080.03812.80
5.3.280.0030.04112.71
5.3.270.0050.04212.72
5.3.260.0080.03912.71
5.3.250.0110.03212.72
5.3.240.0100.03212.72
5.3.230.0040.03912.71
5.3.220.0110.03112.68
5.3.210.0100.03412.68
5.3.200.0070.03512.68
5.3.190.0050.03812.67
5.3.180.0090.03212.68
5.3.170.0060.04212.67
5.3.160.0110.04612.67
5.3.150.0090.04212.68
5.3.140.0070.03412.66
5.3.130.0090.03512.65
5.3.120.0040.03912.65
5.3.110.0040.04012.66
5.3.100.0080.03412.12
5.3.90.0040.03712.08
5.3.80.0070.03412.08
5.3.70.0060.03512.08
5.3.60.0050.03612.06
5.3.50.0090.03312.00
5.3.40.0070.03612.00
5.3.30.0090.03211.95
5.3.20.0060.03611.72
5.3.10.0060.03511.70
5.3.00.0090.04311.68
5.2.170.0050.0309.18
5.2.160.0060.0279.18
5.2.150.0050.0299.18
5.2.140.0050.0299.17
5.2.130.0010.0329.14
5.2.120.0050.0279.14
5.2.110.0040.0309.14
5.2.100.0040.0289.14
5.2.90.0070.0269.14
5.2.80.0060.0289.14
5.2.70.0050.0329.14
5.2.60.0050.0309.09
5.2.50.0050.0299.06
5.2.40.0050.0289.04
5.2.30.0060.0289.02
5.2.20.0060.0269.01
5.2.10.0050.0278.92
5.2.00.0040.0298.78
5.1.60.0050.0228.07
5.1.50.0020.0268.06
5.1.40.0040.0248.05
5.1.30.0030.0278.40
5.1.20.0060.0288.42
5.1.10.0030.0268.14
5.1.00.0040.0268.14
5.0.50.0050.0196.62
5.0.40.0030.0196.48
5.0.30.0050.0306.29
5.0.20.0040.0186.26
5.0.10.0040.0196.24
5.0.00.0030.0306.23
4.4.90.0020.0164.78
4.4.80.0010.0174.76
4.4.70.0000.0184.75
4.4.60.0030.0144.75
4.4.50.0010.0164.77
4.4.40.0010.0264.70
4.4.30.0020.0154.75
4.4.20.0030.0194.84
4.4.10.0030.0154.85
4.4.00.0040.0234.76
4.3.110.0040.0154.67
4.3.100.0030.0144.66
4.3.90.0020.0154.64
4.3.80.0040.0234.58
4.3.70.0040.0134.63
4.3.60.0030.0144.63
4.3.50.0030.0154.63
4.3.40.0020.0244.54
4.3.30.0030.0153.29
4.3.20.0010.0173.26
4.3.10.0010.0163.21
4.3.00.0030.01316.72

preferences:
141.4 ms | 1394 KiB | 7 Q