3v4l.org

run code in 300+ PHP versions simultaneously
<?php function setifexists(&$var, null) { if (!isset($var)) { $var = null; } } setifexists($nonsense, true); var_dump($nonsense); $me = false; setifexists($me, true); var_dump($me);

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)
5.4.320.0090.03712.52
5.4.310.0060.04512.51
5.4.300.0070.04112.52
5.4.290.0110.04212.50
5.4.280.0070.04512.41
5.4.270.0080.03612.40
5.4.260.0070.04312.40
5.4.250.0070.04112.41
5.4.240.0110.03512.41
5.4.230.0060.03812.40
5.4.220.0040.03812.40
5.4.210.0060.03812.40
5.4.200.0040.04212.40
5.4.190.0080.03412.39
5.4.180.0060.04412.39
5.4.170.0060.03612.40
5.4.160.0130.03512.39
5.4.150.0110.03512.39
5.4.140.0070.04612.09
5.4.130.0040.04212.06
5.4.120.0090.03412.03
5.4.110.0070.03512.03
5.4.100.0060.04012.03
5.4.90.0090.03912.03
5.4.80.0080.03912.03
5.4.70.0070.03712.02
5.4.60.0050.03812.02
5.4.50.0120.03412.02
5.4.40.0090.03512.01
5.4.30.0040.03812.01
5.4.20.0090.03712.00
5.4.10.0050.03712.01
5.4.00.0110.03111.50
5.3.290.0100.04712.80
5.3.280.0080.03812.70
5.3.270.0100.04112.73
5.3.260.0100.04712.71
5.3.250.0060.04712.72
5.3.240.0040.03912.72
5.3.230.0080.03912.71
5.3.220.0070.03912.68
5.3.210.0050.05012.68
5.3.200.0080.03912.68
5.3.190.0060.03812.67
5.3.180.0070.03512.67
5.3.170.0110.03812.67
5.3.160.0090.03412.68
5.3.150.0080.03612.68
5.3.140.0090.03812.66
5.3.130.0060.03912.65
5.3.120.0090.03712.66
5.3.110.0070.04812.66
5.3.100.0060.03912.13
5.3.90.0080.03512.11
5.3.80.0080.03712.09
5.3.70.0080.05312.09
5.3.60.0090.04112.08
5.3.50.0070.03612.02
5.3.40.0090.04212.02
5.3.30.0100.03511.98
5.3.20.0090.04011.76
5.3.10.0030.04011.74
5.3.00.0100.03311.71
5.2.170.0090.0309.22
5.2.160.0050.0309.21
5.2.150.0080.0289.22
5.2.140.0040.0329.21
5.2.130.0050.0299.17
5.2.120.0060.0289.17
5.2.110.0050.0429.18
5.2.100.0080.0379.18
5.2.90.0060.0359.18
5.2.80.0070.0359.18
5.2.70.0090.0369.17
5.2.60.0060.0319.13
5.2.50.0070.0349.09
5.2.40.0110.0349.07
5.2.30.0070.0279.05
5.2.20.0040.0299.04
5.2.10.0070.0258.95
5.2.00.0050.0288.80
5.1.60.0010.0308.09
5.1.50.0040.0338.09
5.1.40.0080.0278.07
5.1.30.0030.0278.42
5.1.20.0070.0248.44
5.1.10.0030.0278.16
5.1.00.0060.0308.16
5.0.50.0090.0156.64
5.0.40.0060.0176.50
5.0.30.0050.0306.31
5.0.20.0030.0206.28
5.0.10.0080.0166.25
5.0.00.0030.0316.25
4.4.90.0020.0164.77
4.4.80.0020.0234.75
4.4.70.0040.0204.76
4.4.60.0040.0154.75
4.4.50.0060.0114.77
4.4.40.0020.0344.71
4.4.30.0040.0204.76
4.4.20.0050.0164.84
4.4.10.0020.0184.85
4.4.00.0030.0244.76
4.3.110.0030.0164.67
4.3.100.0050.0214.66
4.3.90.0060.0164.63
4.3.80.0030.0284.58
4.3.70.0070.0154.63
4.3.60.0040.0154.63
4.3.50.0050.0134.63
4.3.40.0050.0284.54
4.3.30.0020.0163.30
4.3.20.0020.0193.29
4.3.10.0020.0163.24
4.3.00.0030.01718.56

preferences:
141.63 ms | 1394 KiB | 7 Q