3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dom = new DOMDocument(); $dom->loadXml('<foo xmlns="urn:foo"/>'); var_dump($dom->documentElement->lookupNamespaceUri(NULL)); var_dump($dom->documentElement->lookupNamespaceUri('' || NULL));

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)
8.3.60.0140.00318.31
8.3.50.0190.01322.92
8.3.40.0210.00018.92
8.3.30.0140.00019.20
8.3.20.0000.00720.59
8.3.10.0000.00722.11
8.3.00.0120.00017.59
8.2.180.0120.00616.63
8.2.170.0110.00322.96
8.2.160.0110.00820.64
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00721.19
8.2.110.0040.00422.45
8.2.100.0030.00719.38
8.2.90.0060.00319.20
8.2.80.0000.00917.97
8.2.70.0090.00017.75
8.2.60.0080.00017.93
8.2.50.0000.00818.07
8.2.40.0080.00018.34
8.2.30.0040.00418.11
8.2.20.0040.00417.80
8.2.10.0040.00418.27
8.2.00.0000.00717.70
8.1.280.0140.00325.92
8.1.270.0030.00523.98
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0100.00024.21
8.1.230.0040.01119.29
8.1.220.0080.00017.88
8.1.210.0040.00418.77
8.1.200.0030.00617.37
8.1.190.0040.00417.23
8.1.180.0000.00918.10
8.1.170.0080.00018.78
8.1.160.0000.00722.06
8.1.150.0000.00719.04
8.1.140.0000.00817.58
8.1.130.0000.00717.98
8.1.120.0030.00517.52
8.1.110.0040.00417.48
8.1.100.0000.00717.51
8.1.90.0030.00617.67
8.1.80.0030.00617.66
8.1.70.0000.00717.49
8.1.60.0060.00317.69
8.1.50.0000.00817.74
8.1.40.0040.00417.66
8.1.30.0040.00417.62
8.1.20.0050.00217.61
8.1.10.0000.00717.64
8.1.00.0080.00017.69
8.0.300.0070.00018.77
8.0.290.0000.00816.75
8.0.280.0070.00018.47
8.0.270.0030.00317.44
8.0.260.0030.00317.42
8.0.250.0070.00017.13
8.0.240.0040.00417.05
8.0.230.0000.00817.15
8.0.220.0000.00717.03
8.0.210.0000.00716.98
8.0.200.0070.00317.11
8.0.190.0070.00017.13
8.0.180.0040.00417.02
8.0.170.0040.00416.92
8.0.160.0030.00617.04
8.0.150.0000.00716.84
8.0.140.0000.00716.95
8.0.130.0060.00013.48
8.0.120.0000.00717.02
8.0.110.0000.00717.10
8.0.100.0050.00217.00
8.0.90.0040.00316.96
8.0.80.0190.00317.03
8.0.70.0000.00717.05
8.0.60.0070.00016.92
8.0.50.0030.00517.14
8.0.30.0110.01117.02
8.0.20.0100.01017.41
8.0.10.0040.00417.00
8.0.00.0130.00716.86
7.4.330.0000.00515.11
7.4.320.0040.00416.71
7.4.300.0060.00016.74
7.4.290.0030.00316.74
7.4.280.0030.00416.65
7.4.270.0030.00316.68
7.4.260.0040.00416.62
7.4.250.0040.00416.62
7.4.240.0010.00616.73
7.4.230.0040.00416.74
7.4.220.0170.00716.74
7.4.210.0060.01216.75
7.4.200.0000.00716.72
7.4.160.0130.00316.41
7.4.150.0100.00717.40
7.4.140.0090.01017.86
7.4.130.0080.01116.57
7.4.120.0080.00916.64
7.4.110.0120.00916.64
7.4.100.0080.00816.65
7.4.90.0090.00916.46
7.4.80.0100.01019.39
7.4.70.0150.00316.69
7.4.60.0000.01616.44
7.4.50.0000.00416.50
7.4.40.0110.01116.55
7.4.30.0090.00616.74
7.4.00.0060.00815.00
7.3.330.0060.00313.06
7.3.320.0060.00013.17
7.3.310.0000.00716.25
7.3.300.0030.00616.35
7.3.290.0090.00616.38
7.3.280.0090.00716.35
7.3.270.0090.00917.40
7.3.260.0110.00616.49
7.3.250.0090.00816.53
7.3.240.0130.00316.35
7.3.230.0030.01316.41
7.3.210.0130.01016.35
7.3.200.0060.01219.39
7.3.190.0140.00616.50
7.3.180.0110.00416.43
7.3.170.0080.00816.42
7.3.160.0160.00016.54
7.3.00.0130.00316.36
7.2.330.0160.00616.91
7.2.320.0070.01016.82
7.2.310.0120.00416.74
7.2.300.0120.01216.80
7.2.290.0080.00816.73
7.2.130.0030.01016.49
7.2.120.0110.00516.86
7.2.110.0050.01616.64
7.2.100.0130.00316.59
7.2.90.0140.00816.57
7.2.80.0170.00216.60
7.2.70.0080.01716.30
7.2.60.0110.00516.34
7.2.50.0140.01116.56
7.2.40.0070.01516.48
7.2.30.0140.01016.53
7.2.20.0080.00516.38
7.2.10.0060.00616.26
7.2.00.0070.00817.93
7.1.250.0100.00315.70
7.1.240.0160.00015.46
7.1.230.0090.00615.57
7.1.220.0130.00415.30
7.1.210.0070.01015.48
7.1.200.0080.01115.49
7.1.190.0190.00315.73
7.1.180.0100.00715.64
7.1.170.0110.00515.59
7.1.160.0130.00515.79
7.1.150.0140.00615.64
7.1.140.0060.00615.44
7.1.130.0100.00715.53
7.1.120.0070.00315.57
7.1.110.0030.01115.47
7.1.100.0040.00917.02
7.1.90.0100.00315.36
7.1.80.0160.00815.53
7.1.70.0120.00516.63
7.1.60.0100.01217.59
7.1.50.0200.01325.21
7.1.40.0180.00015.87
7.1.30.0100.01015.44
7.1.20.0140.00715.29
7.1.10.0160.00315.86
7.1.00.0110.04019.03
7.0.330.0070.00515.16
7.0.320.0110.00515.18
7.0.310.0150.00314.84
7.0.300.0070.01115.19
7.0.290.0030.01315.52
7.0.280.0040.01415.06
7.0.270.0060.00315.24
7.0.260.0110.00415.08
7.0.250.0070.00314.80
7.0.240.0120.00615.09
7.0.230.0120.00415.41
7.0.220.0090.00615.32
7.0.210.0120.00615.25
7.0.200.0060.00915.86
7.0.190.0240.00315.29
7.0.180.0150.00615.23
7.0.170.0170.00715.11
7.0.160.0110.00815.08
7.0.150.0160.00315.29
7.0.140.0050.04218.76
7.0.130.0160.01015.29
7.0.120.0210.00715.18
7.0.110.0140.01015.61
7.0.100.0110.00815.05
7.0.90.0170.00315.23
7.0.80.0140.00715.39
7.0.70.0080.01115.68
7.0.60.0130.03817.72
7.0.50.0100.03716.73
7.0.40.0030.02816.78
7.0.30.0140.02616.88
7.0.20.0170.03316.71
7.0.10.0070.03516.79
7.0.00.0070.03816.69
5.6.380.0040.00814.15
5.6.370.0050.00914.26
5.6.360.0100.00614.18
5.6.350.0100.01014.07
5.6.340.0070.00314.40
5.6.330.0000.01013.98
5.6.320.0000.01014.27
5.6.310.0030.00914.05
5.6.300.0030.01014.52
5.6.290.0030.00814.04
5.6.280.0020.04017.55
5.6.270.0090.00314.13
5.6.260.0030.01014.21
5.6.250.0060.00614.13
5.6.240.0030.01014.00
5.6.230.0090.00313.97
5.6.220.0070.00714.01
5.6.210.0080.03617.23
5.6.200.0050.04616.28
5.6.190.0020.04417.15
5.6.180.0150.04017.39
5.6.170.0190.02217.21
5.6.160.0120.03817.19
5.6.150.0120.03816.16
5.6.140.0040.04616.29
5.6.130.0050.02716.25
5.6.120.0050.03417.47
5.6.110.0000.05217.42
5.6.100.0080.02717.45
5.6.90.0060.04517.54
5.6.80.0070.02217.21
5.6.70.0060.00613.88
5.6.60.0100.00313.96
5.6.50.0060.00814.01
5.6.40.0060.00814.34
5.6.30.0100.00314.44
5.6.20.0040.00814.04
5.6.10.0030.00913.93
5.6.00.0000.01214.04
5.5.380.0030.00611.00
5.5.370.0030.01011.00
5.5.360.0030.00311.00
5.5.350.0150.04015.72
5.5.340.0010.03314.54
5.5.330.0050.03215.82
5.5.320.0070.04515.74
5.5.310.0180.04315.79
5.5.300.0040.03714.56
5.5.290.0050.04414.54
5.5.280.0060.02315.85
5.5.270.0030.02115.86
5.5.260.0020.02516.02
5.5.250.0070.04515.93
5.5.240.0050.04015.69
5.5.230.0090.00011.00
5.5.220.0000.00511.07
5.5.210.0030.00611.08
5.5.200.0000.00611.02
5.5.190.0030.00311.00
5.5.180.0000.01011.22
5.5.170.0100.00311.11
5.5.160.0030.00311.10
5.5.150.0060.00311.00
5.5.140.0040.00711.04
5.5.130.0030.01211.05
5.5.120.0090.00611.00
5.5.110.0030.00711.17
5.5.100.0030.00511.00
5.5.90.0060.00311.04
5.5.80.0030.00711.00
5.5.70.0090.00311.00
5.5.60.0030.00611.00
5.5.50.0040.00811.00
5.5.40.0070.00311.00
5.5.30.0000.00711.00
5.5.20.0090.00011.08
5.5.10.0000.00811.00
5.5.00.0060.00611.00
5.4.450.0430.02815.28
5.4.440.0370.03215.17
5.4.430.0280.03515.29
5.4.420.0390.03315.35
5.4.410.0350.02715.24
5.4.400.0240.03414.94
5.4.390.0200.03714.93
5.4.380.0150.02414.81
5.4.370.0080.02414.81
5.4.360.0070.02614.93
5.4.350.0060.03011.56
5.4.340.0070.02311.56
5.4.330.0030.00611.00
5.4.320.0030.02111.80
5.4.310.0040.02411.80
5.4.300.0040.02211.80
5.4.290.0040.02111.80
5.4.280.0070.02311.75
5.4.270.0090.01811.75
5.4.260.0040.02411.75
5.4.250.0050.02311.81
5.4.240.0040.02211.75
5.4.230.0070.02511.75
5.4.220.0060.02211.75
5.4.210.0050.01911.74
5.4.200.0100.01711.74
5.4.190.0060.02111.74
5.4.180.0070.02111.74
5.4.170.0030.02011.75
5.4.160.0050.01811.75
5.4.150.0070.02011.75
5.4.140.0050.02011.59
5.4.130.0080.02211.58
5.4.120.0080.02111.56
5.4.110.0060.02311.62
5.4.100.0050.02411.56
5.4.90.0040.02211.56
5.4.80.0040.02411.56
5.4.70.0040.02311.55
5.4.60.0030.02211.56
5.4.50.0030.02611.55
5.4.40.0060.02211.55
5.4.30.0050.02511.55
5.4.20.0050.02011.55
5.4.10.0060.02111.55
5.4.00.0080.02211.29
5.3.290.0050.02311.93
5.3.280.0090.02411.90
5.3.270.0070.02011.90
5.3.260.0020.02311.90
5.3.250.0040.02411.90
5.3.240.0070.02611.90
5.3.230.0050.02211.90
5.3.220.0040.02411.88
5.3.210.0050.02111.89
5.3.200.0030.02111.88
5.3.190.0040.02111.88
5.3.180.0060.02011.88
5.3.170.0100.01711.88
5.3.160.0040.02111.88
5.3.150.0020.02411.88
5.3.140.0040.02111.88
5.3.130.0060.02111.88
5.3.120.0080.02111.88
5.3.110.0050.02311.88
5.3.100.0040.02411.62
5.3.90.0060.02211.61
5.3.80.0030.02511.61
5.3.70.0040.02311.60
5.3.60.0040.02611.60
5.3.50.0050.02111.57
5.3.40.0030.02311.57
5.3.30.0030.02111.55
5.3.20.0070.02111.44
5.3.10.0030.02211.42
5.3.00.0060.02111.42
5.2.170.0040.01810.17
5.2.160.0040.01710.17
5.2.150.0050.01910.17
5.2.140.0040.02110.16
5.2.130.0050.02010.14
5.2.120.0050.01610.15
5.2.110.0030.02410.15
5.2.100.0060.02110.15
5.2.90.0060.01910.15
5.2.80.0050.02110.15
5.2.70.0030.02010.14
5.2.60.0050.01910.12
5.2.50.0060.01610.11
5.2.40.0040.01710.10
5.2.30.0020.02010.08
5.2.20.0040.01710.08
5.2.10.0060.01510.04
5.2.00.0010.0219.96
5.1.60.0040.0139.61
5.1.50.0020.0179.61
5.1.40.0050.0149.60
5.1.30.0040.0159.77
5.1.20.0050.0159.78
5.1.10.0020.0169.65
5.1.00.0040.0149.65
5.0.50.0040.0118.88
5.0.40.0030.0128.81
5.0.30.0030.0208.72
5.0.20.0020.0128.71
5.0.10.0040.0108.70
5.0.00.0040.0178.69
4.4.90.0050.0097.89
4.4.80.0030.0087.88
4.4.70.0020.0107.88
4.4.60.0030.0127.88
4.4.50.0040.0107.89
4.4.40.0030.0147.86
4.4.30.0020.0087.88
4.4.20.0030.0107.92
4.4.10.0010.0117.93
4.4.00.0020.0137.88
4.3.110.0020.0117.84
4.3.100.0050.0097.84
4.3.90.0020.0127.82
4.3.80.0020.0137.79
4.3.70.0020.0107.82
4.3.60.0030.0147.81
4.3.50.0040.0097.81
4.3.40.0010.0197.77
4.3.30.0030.0107.14
4.3.20.0020.0117.13
4.3.10.0010.0127.11
4.3.00.0050.0139.06

preferences:
48.02 ms | 401 KiB | 5 Q