3v4l.org

run code in 300+ PHP versions simultaneously
<?php class X { } class XFactory { private $className = 'X'; private function getClassName() { return $this->className; } public function create() { return array( 'member without parens' => new $this->className, 'member with parens' => new $this->className(), // 'method without parens' => new $this->getClassName, # Does not work at all 'method with parens' => new $this->getClassName(), 'method with double parens' => new $this->getClassName()(), ); } } $factory = new XFactory(); var_dump($factory->create());

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)
5.4.340.0060.03512.04
5.4.320.0100.03412.52
5.4.310.0060.04112.52
5.4.300.0100.03312.52
5.4.290.0060.03712.52
5.4.280.0060.03812.41
5.4.270.0050.04112.41
5.4.260.0100.03712.41
5.4.250.0050.04212.41
5.4.240.0070.03912.41
5.4.230.0050.04212.40
5.4.220.0130.05612.41
5.4.210.0080.04412.41
5.4.200.0060.04412.40
5.4.190.0040.03912.40
5.4.180.0040.04112.40
5.4.170.0080.03412.41
5.4.160.0090.03412.41
5.4.150.0030.04012.40
5.4.140.0100.03512.09
5.4.130.0040.03712.07
5.4.120.0070.03612.04
5.4.110.0040.03712.03
5.4.100.0060.03412.03
5.4.90.0040.03912.04
5.4.80.0060.03612.04
5.4.70.0110.03812.03
5.4.60.0110.03212.03
5.4.50.0070.03312.03
5.4.40.0040.03612.02
5.4.30.0050.03612.01
5.4.20.0040.03812.01
5.4.10.0020.04112.02
5.4.00.0070.03411.51
5.3.290.0050.04112.80
5.3.280.0090.03412.71
5.3.270.0100.03712.72
5.3.260.0080.04212.71
5.3.250.0070.03812.72
5.3.240.0060.03912.72
5.3.230.0040.04012.71
5.3.220.0050.03812.68
5.3.210.0100.03812.68
5.3.200.0080.03512.68
5.3.190.0050.04012.67
5.3.180.0060.03612.68
5.3.170.0040.03912.67
5.3.160.0040.04012.67
5.3.150.0080.04012.67
5.3.140.0070.03612.66
5.3.130.0060.03912.66
5.3.120.0070.03812.65
5.3.110.0100.03912.66
5.3.100.0070.04712.13
5.3.90.0060.04112.11
5.3.80.0080.03512.10
5.3.70.0080.03812.10
5.3.60.0050.04112.09
5.3.50.0060.04012.03
5.3.40.0090.04012.03
5.3.30.0050.03911.99
5.3.20.0060.03911.77
5.3.10.0040.04011.74
5.3.00.0020.04011.73
5.2.170.0050.0309.22
5.2.160.0060.0279.22
5.2.150.0040.0329.22
5.2.140.0060.0349.22
5.2.130.0060.0309.18
5.2.120.0050.0319.18
5.2.110.0080.0299.19
5.2.100.0050.0319.19
5.2.90.0080.0309.19
5.2.80.0050.0309.18
5.2.70.0050.0319.18
5.2.60.0030.0329.14
5.2.50.0050.0319.10
5.2.40.0070.0389.08
5.2.30.0050.0329.05
5.2.20.0060.0299.05
5.2.10.0030.0308.95
5.2.00.0020.0328.81
5.1.60.0040.0268.10
5.1.50.0070.0248.09
5.1.40.0030.0278.07
5.1.30.0030.0298.43
5.1.20.0020.0298.45
5.1.10.0030.0298.18
5.1.00.0060.0258.17
5.0.50.0030.0236.65
5.0.40.0070.0176.52
5.0.30.0030.0326.32
5.0.20.0040.0196.29
5.0.10.0050.0196.27
5.0.00.0070.0316.26
4.4.90.0040.0154.78
4.4.80.0020.0164.75
4.4.70.0040.0154.76
4.4.60.0020.0174.76
4.4.50.0040.0164.77
4.4.40.0030.0254.71
4.4.30.0040.0164.76
4.4.20.0060.0144.84
4.4.10.0030.0174.85
4.4.00.0040.0244.76
4.3.110.0040.0144.66
4.3.100.0020.0164.66
4.3.90.0030.0164.63
4.3.80.0060.0214.59
4.3.70.0030.0164.63
4.3.60.0040.0134.63
4.3.50.0030.0154.63
4.3.40.0030.0254.54
4.3.30.0030.0163.30
4.3.20.0010.0173.28
4.3.10.0010.0193.23
4.3.00.0030.0276.88

preferences:
141.23 ms | 1394 KiB | 7 Q