3v4l.org

run code in 300+ PHP versions simultaneously
<?php class GrandPa { protected $elements = array( 'a' => 1, 'b' => 2, ); public function mergeElements($childElements = null) { // 用反射实现 $elements = $this->elements; $class = new ReflectionClass($this); while($class = $class->getParentClass()) { $properties = $class->getDefaultProperties(); if(isset($properties['elements'])) { $elements = array_merge($properties['elements'], $elements); } } return $elements; } } class Father extends GrandPa { protected $elements = array( 'c' => 3, ); } class Me extends Father{ protected $elements = array( 'd' => 4, ); } $stime=microtime(true); for ($i=1;$i<=100000;$i++){ $me = new Me(); $me->mergeElements(); } $etime=microtime(true); echo $etime-$stime;

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)
7.2.60.0000.10416.91
7.2.00.0030.11719.49
7.1.100.0030.11818.04
7.1.70.0000.13717.16
7.1.60.0070.18019.82
7.1.50.0100.17616.89
7.1.00.0000.23322.30
7.0.200.0000.12716.91
7.0.140.0070.22721.92
7.0.70.0070.19721.65
7.0.60.0030.20721.68
7.0.50.0030.17022.06
7.0.40.0070.20320.14
7.0.30.0030.20320.13
7.0.20.0000.16720.11
7.0.10.0100.20720.09
7.0.00.0030.20720.07
5.6.280.0000.44321.10
5.6.220.0000.27020.62
5.6.210.0030.31320.63
5.6.200.0030.33320.93
5.6.190.0000.30321.04
5.6.180.0070.32721.07
5.6.170.0100.28020.96
5.6.160.0070.29321.09
5.6.150.0100.27021.09
5.6.140.0100.30721.12
5.6.130.0100.27721.02
5.6.120.0030.34021.04
5.6.110.0030.33321.10
5.6.100.0070.30721.00
5.6.90.0030.29021.06
5.6.80.0070.32720.44
5.6.70.0070.31720.48
5.6.60.0070.30320.32
5.6.50.0070.31720.49
5.6.40.0100.32720.43
5.6.30.0030.34320.50
5.6.20.0130.31020.39
5.6.10.0000.33720.32
5.6.00.0070.32320.38
5.5.360.0070.32020.35
5.5.350.0070.32320.41
5.5.340.0030.28720.73
5.5.330.0070.35720.65
5.5.320.0000.33320.93
5.5.310.0000.35320.74
5.5.300.0070.40320.88
5.5.290.0070.28320.78
5.5.280.0100.32320.90
5.5.270.0070.33720.89
5.5.260.0030.28020.90
5.5.250.0070.33720.60
5.5.240.0130.34020.04
5.5.230.0070.31020.21
5.5.220.0000.26320.02
5.5.210.0070.35320.02
5.5.200.0030.34720.12
5.5.190.0100.34020.16
5.5.180.0070.33720.28
5.5.160.0100.33020.00
5.5.150.0030.32720.14
5.5.140.0070.32320.13
5.5.130.0030.32020.28
5.5.120.0000.31720.19
5.5.110.0100.32719.99
5.5.100.0000.35320.12
5.5.90.0000.27720.17
5.5.80.0030.26720.08
5.5.70.0000.26720.07
5.5.60.0000.37720.07
5.5.50.0030.44019.94
5.5.40.0000.26020.13
5.5.30.0000.32319.93
5.5.20.0000.27320.04
5.5.10.0030.38020.10
5.5.00.0030.40320.04
5.4.450.0000.36019.56
5.4.440.0070.33319.20
5.4.430.0000.36319.50
5.4.420.0070.34719.55
5.4.410.0030.30719.40
5.4.400.0100.37019.09
5.4.390.0000.34019.04
5.4.380.0000.33319.09
5.4.370.0030.38019.02
5.4.360.0070.37018.95
5.4.350.0030.35319.07
5.4.340.0400.35318.91
5.4.320.0030.37019.22
5.4.310.0030.36719.07
5.4.300.0130.37019.03
5.4.290.0030.38319.15
5.4.280.0030.34319.03
5.4.270.0000.36019.08
5.4.260.0000.38019.18
5.4.250.0370.26319.12
5.4.240.0000.25319.09
5.4.230.0000.27019.23
5.4.220.0000.43018.94
5.4.210.0000.25319.04
5.4.200.0000.29719.04
5.4.190.0000.25719.03
5.4.180.0200.31319.06
5.4.170.0070.36319.03
5.4.160.0030.33719.11
5.4.150.0000.27318.92
5.4.140.0000.30316.41
5.4.130.0070.35716.46
5.4.120.0100.35016.33
5.4.110.0030.40016.48
5.4.100.0070.37716.34
5.4.90.0000.37016.52
5.4.80.0170.35716.53
5.4.70.0030.35716.39
5.4.60.0000.24716.46
5.4.50.0000.34016.36
5.4.40.0030.37016.52
5.4.30.0030.31716.45
5.4.20.0000.36016.29
5.4.10.0070.39316.40
5.4.00.0030.36015.88
5.3.290.0030.48315.70
5.3.280.0000.34715.70
5.3.270.0070.47715.70
5.3.260.0030.46715.70
5.3.250.0000.44715.70
5.3.240.0070.46315.70
5.3.230.0070.41015.70
5.3.220.0000.46715.70
5.3.210.0000.46015.70
5.3.200.0030.46715.70
5.3.190.0030.48715.70
5.3.180.0030.48015.70
5.3.170.0030.46715.70
5.3.160.0070.47315.70
5.3.150.0000.44315.70
5.3.140.0070.46715.70
5.3.130.0000.46715.70
5.3.120.0000.47715.70
5.3.110.0070.46715.70
5.3.100.0030.45315.70
5.3.90.0030.45015.70
5.3.80.0070.46015.70
5.3.70.0030.45715.70
5.3.60.0000.47315.70
5.3.50.0000.47015.70
5.3.40.0070.45015.70
5.3.30.0030.46015.70
5.3.20.0000.46315.70
5.3.10.0000.48015.70
5.3.00.0070.38015.70
5.2.170.0000.42715.70
5.2.160.0000.49315.70
5.2.150.0070.47015.70
5.2.140.0070.46315.70
5.2.130.0030.44015.70
5.2.120.0030.50015.70
5.2.110.0000.46715.70
5.2.100.0030.49015.70
5.2.90.0000.37015.70
5.2.80.0000.39015.70
5.2.70.0030.48715.70
5.2.60.0000.49315.70
5.2.50.0070.53315.70
5.2.40.0030.51715.70
5.2.30.0070.49715.70
5.2.20.0000.49315.70
5.2.10.0000.49315.70
5.2.00.0000.51715.70
5.1.60.0030.47715.70
5.1.50.0030.48715.70
5.1.40.0030.45315.70
5.1.30.0030.47715.70
5.1.20.0000.50015.70
5.1.10.0000.38015.70
5.1.00.0000.34315.70
5.0.50.0030.46715.70
5.0.40.0000.43715.70
5.0.30.0130.0437.99
5.0.20.0070.0408.08
5.0.10.0030.0338.04
5.0.00.0030.0477.85
4.4.90.0000.04015.70
4.4.80.0030.03315.70
4.4.70.0000.03315.70
4.4.60.0000.02015.70
4.4.50.0070.02315.70
4.4.40.0030.05315.70
4.4.30.0000.03715.70
4.4.20.0000.01715.70
4.4.10.0030.02715.70
4.4.00.0070.03715.70
4.3.110.0000.03715.70
4.3.100.0000.03715.70
4.3.90.0000.03315.70
4.3.80.0030.04315.70
4.3.70.0030.03015.70
4.3.60.0070.02015.70
4.3.50.0030.02315.70
4.3.40.0000.03715.70
4.3.30.0070.03315.70
4.3.20.0030.03315.70
4.3.10.0030.02715.70
4.3.00.0100.02715.70

preferences:
34.23 ms | 401 KiB | 5 Q