3v4l.org

run code in 300+ PHP versions simultaneously
<?php class MyXML extends SimpleXMLElement { public function firstChild() { $children = $this->children(); foreach ($children as $child) break; return $child; } public function keyHasTwins($key) { if (isset($this->$key)) return (count($this->$key)>1); else return false; } public function hasChildren() { return (bool)count($this->children()); } public function nodeIsCollection() { var_dump(count($this));exit; return (count); } public function getChildrenKeys() { $all = []; $children = $this->children(); foreach ($children as $key => $child) { $all[] = $key; } return $all; } } $s = '<?xml version="1.0" encoding="utf-8" standalone="yes" ?>'. '<request>'. ' <body>'. ' <rows>'. ' <row id="1"/>'. ' <row id="2"/>'. ' <row id="3"/>'. ' <row2 ver="2.0">test data</row2>'. ' <row2 ver="2.1">test data 2</row2>'. ' <row3 ver="3.0">'. ' <test inherit="yes">data</test>'. ' </row3>'. ' </rows>'. ' </body>'. '</request>'; $obj = new MyXML($s); $row = $obj->firstChild()->firstChild(); var_dump($row->getChildrenKeys());

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)
8.3.60.0160.00316.88
8.3.50.0060.01322.08
8.3.40.0110.00419.04
8.3.30.0110.00419.39
8.3.20.0000.00820.59
8.3.10.0040.00423.77
8.3.00.0000.00819.63
8.2.180.0060.00918.54
8.2.170.0070.00722.96
8.2.160.0100.00320.78
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0040.00422.27
8.2.110.0090.00022.46
8.2.100.0080.00418.09
8.2.90.0090.00019.31
8.2.80.0050.00318.28
8.2.70.0040.00417.88
8.2.60.0080.00018.18
8.2.50.0060.00318.07
8.2.40.0040.00418.34
8.2.30.0100.00018.44
8.2.20.0000.00717.93
8.2.10.0030.00718.44
8.2.00.0000.01118.00
8.1.280.0100.00725.92
8.1.270.0050.00322.27
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00324.00
8.1.230.0040.00719.37
8.1.220.0060.00317.74
8.1.210.0000.00918.77
8.1.200.0030.00617.60
8.1.190.0090.00017.79
8.1.180.0000.00818.10
8.1.170.0000.00918.68
8.1.160.0040.00422.28
8.1.150.0040.00418.94
8.1.140.0000.00817.71
8.1.130.0000.00718.08
8.1.120.0040.00417.64
8.1.110.0000.00717.73
8.1.100.0000.00717.66
8.1.90.0040.00417.63
8.1.80.0030.00317.66
8.1.70.0030.00317.71
8.1.60.0060.00317.77
8.1.50.0040.00417.74
8.1.40.0060.00317.70
8.1.30.0000.00817.88
8.1.20.0050.00317.86
8.1.10.0040.00417.70
8.1.00.0000.00817.82
8.0.300.0040.00418.77
8.0.290.0050.00217.55
8.0.280.0040.00418.71
8.0.270.0000.00717.55
8.0.260.0070.00016.94
8.0.250.0000.00717.09
8.0.240.0040.00417.12
8.0.230.0070.00017.20
8.0.220.0030.00517.04
8.0.210.0040.00417.17
8.0.200.0060.00017.26
8.0.190.0040.00417.31
8.0.180.0000.00817.26
8.0.170.0080.00017.18
8.0.160.0000.00717.18
8.0.150.0070.00017.20
8.0.140.0000.00717.01
8.0.130.0030.00313.54
8.0.120.0030.00517.09
8.0.110.0030.00517.10
8.0.100.0070.00017.21
8.0.90.0000.00817.13
8.0.80.0120.00917.12
8.0.70.0040.00417.00
8.0.60.0000.00716.95
8.0.50.0000.00817.14
8.0.30.0050.01317.50
8.0.20.0110.00917.40
8.0.10.0040.00417.29
8.0.00.0080.01017.00
7.4.330.0030.00315.44
7.4.320.0000.00616.70
7.4.300.0030.00316.86
7.4.290.0030.00316.82
7.4.280.0110.00016.84
7.4.270.0000.00716.96
7.4.260.0030.00316.82
7.4.250.0040.00416.83
7.4.240.0040.00416.79
7.4.230.0000.00616.83
7.4.220.0040.01416.88
7.4.210.0100.00616.76
7.4.200.0050.00216.65
7.4.190.0040.00417.03
7.4.160.0110.00516.80
7.4.150.0210.00417.40
7.4.140.0090.00817.86
7.4.130.0150.00316.72
7.4.120.0110.00716.81
7.4.110.0060.01616.74
7.4.100.0090.00916.70
7.4.90.0060.01216.74
7.4.80.0060.01219.39
7.4.70.0020.01316.73
7.4.60.0110.00716.71
7.4.50.0000.00516.75
7.4.40.0060.01222.77
7.4.30.0070.01016.66
7.4.00.0030.01515.33
7.3.330.0030.00313.39
7.3.320.0050.00013.61
7.3.310.0000.00716.61
7.3.300.0000.00716.43
7.3.290.0050.00916.63
7.3.280.0090.00816.52
7.3.270.0090.01017.40
7.3.260.0060.01216.68
7.3.250.0110.00616.72
7.3.240.0030.01416.84
7.3.230.0090.00916.46
7.3.210.0080.00916.75
7.3.200.0170.00719.39
7.3.190.0140.00316.89
7.3.180.0170.00016.62
7.3.170.0030.01316.86
7.3.160.0030.01216.78
7.3.120.0070.01015.25
7.3.110.0000.01714.82
7.3.100.0040.01115.22
7.3.90.0030.01014.94
7.3.80.0080.00614.88
7.3.70.0070.00414.90
7.3.60.0060.01015.14
7.3.50.0040.00715.03
7.3.40.0030.01015.02
7.3.30.0000.00914.92
7.3.20.0000.01616.78
7.3.10.0100.00316.51
7.3.00.0040.00416.72
7.2.330.0150.00316.94
7.2.320.0090.00916.76
7.2.310.0030.01416.94
7.2.300.0090.00916.74
7.2.290.0030.01416.91
7.2.240.0000.01315.11
7.2.230.0060.00915.11
7.2.220.0070.01015.29
7.2.210.0030.01015.34
7.2.200.0090.00614.92
7.2.190.0140.00315.28
7.2.180.0060.00915.24
7.2.170.0090.00615.13
7.2.160.0040.01415.24
7.2.150.0070.01016.97
7.2.140.0070.00316.84
7.2.130.0060.01017.22
7.2.120.0030.00917.05
7.2.110.0060.00317.21
7.2.100.0060.00917.08
7.2.90.0070.00717.29
7.2.80.0070.00416.91
7.2.70.0040.01417.08
7.2.60.0030.00717.05
7.2.50.0110.00417.05
7.2.40.0060.01016.98
7.2.30.0030.01417.08
7.2.20.0080.00417.23
7.2.10.0120.00416.89
7.2.00.0030.01317.16
7.1.330.0100.00315.58
7.1.320.0110.00315.87
7.1.310.0000.01015.85
7.1.300.0070.00715.92
7.1.290.0030.01216.05
7.1.280.0030.01015.71
7.1.270.0060.00315.90
7.1.260.0070.00715.77
7.1.250.0060.00615.81
7.1.100.0030.01018.16
7.1.70.0140.00916.80
7.1.60.0100.00719.33
7.1.50.0070.01716.98
7.1.00.0030.08022.51
7.0.200.0060.00617.02
7.0.140.0000.08022.26
7.0.100.0030.04720.25
7.0.90.0170.04720.01
7.0.80.0200.04719.98
7.0.70.0130.06020.18
7.0.60.0070.08020.00
7.0.50.0100.07720.48
7.0.40.0070.04020.05
7.0.30.0100.06720.14
7.0.20.0000.06320.24
7.0.10.0070.04020.16
7.0.00.0130.08020.23
5.6.280.0030.07321.03
5.6.250.0070.07720.62
5.6.240.0070.06720.72
5.6.230.0030.08020.65
5.6.220.0070.05020.55
5.6.210.0130.08020.69
5.6.200.0070.03721.10
5.6.190.0100.06021.09
5.6.180.0000.07721.09
5.6.170.0000.08021.07
5.6.160.0030.04321.14
5.6.150.0100.07021.18
5.6.140.0030.08021.19
5.6.130.0100.07321.01
5.6.120.0030.08021.15
5.6.110.0070.08021.02
5.6.100.0100.04021.08
5.6.90.0070.07021.15
5.6.80.0070.03720.52
5.6.70.0070.07320.45
5.6.60.0070.08020.50
5.6.50.0130.07320.55
5.6.40.0100.07320.50
5.6.30.0030.06720.49
5.6.20.0000.04320.51
5.6.10.0000.03720.35
5.6.00.0100.02720.59
5.5.380.0070.06020.42
5.5.370.0100.07320.41
5.5.360.0030.07720.59
5.5.350.0070.08020.46
5.5.340.0100.08020.84
5.5.330.0070.04021.04
5.5.320.0130.05720.97
5.5.310.0100.05720.80
5.5.300.0130.06720.96
5.5.290.0070.05021.02
5.5.280.0070.07720.95
5.5.270.0030.07320.96
5.5.260.0030.08720.91
5.5.250.0030.06720.61
5.5.240.0100.05320.34
5.5.230.0070.07020.42
5.5.220.0100.07320.17
5.5.210.0030.04720.38
5.5.200.0070.07020.26
5.5.190.0030.08020.20
5.5.180.0100.05720.34
5.5.160.0030.07720.39
5.5.150.0000.08320.37
5.5.140.0130.03020.38
5.5.130.0130.07020.25
5.5.120.0100.05720.17
5.5.110.0170.07320.36
5.5.100.0130.07020.14
5.5.90.0070.07720.30
5.5.80.0030.03320.04
5.5.70.0000.07320.03
5.5.60.0000.06720.22
5.5.50.0070.04720.29
5.5.40.0030.08320.12
5.5.30.0070.08020.24
5.5.20.0070.07720.12
5.5.10.0100.07020.08
5.5.00.0130.07720.18
5.4.450.0100.05719.51
5.4.440.0000.04719.57
5.4.430.0130.07019.25
5.4.420.0070.06019.35
5.4.410.0000.06719.14
5.4.400.0100.03319.20
5.4.390.0030.08019.28
5.4.380.0070.06718.95
5.4.370.0100.03719.20
5.4.360.0030.06719.24
5.4.350.0030.08019.04
5.4.340.0030.08719.13
5.4.320.0030.08019.26
5.4.310.0000.03719.24
5.4.300.0170.07019.22
5.4.290.0100.06018.89
5.4.280.0070.07319.28
5.4.270.0070.04019.25
5.4.260.0070.07719.12
5.4.250.0000.03319.25
5.4.240.0030.03319.25
5.4.230.0070.06719.23
5.4.220.0000.05718.95
5.4.210.0070.03719.36
5.4.200.0130.07019.23
5.4.190.0100.06719.24
5.4.180.0130.07319.01
5.4.170.0170.05319.09
5.4.160.0100.07019.10
5.4.150.0070.04019.00
5.4.140.0100.07316.63
5.4.130.0030.06316.63
5.4.120.0100.07016.55
5.4.110.0070.07316.64
5.4.100.0000.05316.69
5.4.90.0130.06316.57
5.4.80.0100.07016.60
5.4.70.0030.03716.62
5.4.60.0100.07316.63
5.4.50.0030.07016.59
5.4.40.0030.04316.44
5.4.30.0100.07016.48
5.4.20.0000.04016.49
5.4.10.0070.03716.55
5.4.00.0100.07015.98
5.3.290.0030.08014.63
5.3.280.0070.04314.67
5.3.270.0130.06714.75
5.3.260.0000.08314.63
5.3.250.0100.07314.65
5.3.240.0100.06714.65
5.3.230.0070.04014.67
5.3.220.0030.04714.51
5.3.210.0100.06714.63
5.3.200.0030.04314.60
5.3.190.0070.07714.70
5.3.180.0100.07714.52
5.3.170.0070.06314.64
5.3.160.0030.08314.50
5.3.150.0070.07314.71
5.3.140.0130.06014.68
5.3.130.0030.04014.56
5.3.120.0030.06714.67
5.3.110.0030.04314.70
5.3.100.0030.05714.11
5.3.90.0030.07713.98
5.3.80.0030.07014.14
5.3.70.0130.06313.95
5.3.60.0070.04314.11
5.3.50.0070.07313.93
5.3.40.0000.04014.02
5.3.30.0200.06013.80
5.3.20.0100.04313.63
5.3.10.0070.05713.68
5.3.00.0030.07013.55
5.2.170.0100.02711.54
5.2.160.0030.03011.54
5.2.150.0030.05711.54
5.2.140.0030.04311.54
5.2.130.0030.06711.54
5.2.120.0070.06311.54
5.2.110.0030.06311.54
5.2.100.0100.03311.54
5.2.90.0030.03011.54
5.2.80.0100.04011.54
5.2.70.0030.06011.54
5.2.60.0030.06311.54
5.2.50.0100.06311.54
5.2.40.0000.06711.54
5.2.30.0070.06011.54
5.2.20.0070.05711.54
5.2.10.0030.05011.54
5.2.00.0000.04311.54
5.1.60.0100.04711.54
5.1.50.0030.04311.54
5.1.40.0070.05011.54
5.1.30.0130.03311.54
5.1.20.0070.02311.54
5.1.10.0030.05311.54
5.1.00.0070.05311.54
5.0.50.0070.04311.54
5.0.40.0000.04711.54
5.0.30.0030.05311.54
5.0.20.0030.04311.54
5.0.10.0070.04011.54
5.0.00.0030.06711.54
4.4.90.0030.03311.54
4.4.80.0070.03011.54
4.4.70.0000.04011.54
4.4.60.0000.04011.54
4.4.50.0100.02311.54
4.4.40.0000.06011.54
4.4.30.0000.02011.54
4.4.20.0000.02011.54
4.4.10.0000.04011.54
4.4.00.0030.04711.54
4.3.110.0000.02711.54
4.3.100.0000.03011.54
4.3.90.0030.03711.54
4.3.80.0000.04711.54
4.3.70.0030.01711.54
4.3.60.0030.02711.54
4.3.50.0030.03311.54
4.3.40.0030.04011.54
4.3.30.0030.02011.54
4.3.20.0000.03311.54
4.3.10.0030.03711.54
4.3.00.0000.01711.54

preferences:
58.52 ms | 401 KiB | 5 Q