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(''));

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)
8.3.70.0040.01116.60
8.3.60.0070.01118.54
8.3.50.0110.00622.95
8.3.40.0120.00318.69
8.3.30.0040.01119.17
8.3.20.0040.00420.64
8.3.10.0030.00522.15
8.3.00.0080.00319.50
8.2.180.0140.00416.63
8.2.170.0160.00022.96
8.2.160.0110.01520.57
8.2.150.0040.00424.18
8.2.140.0000.00724.66
8.2.130.0140.00426.16
8.2.120.0080.00021.29
8.2.110.0060.00322.41
8.2.100.0080.00417.91
8.2.90.0000.00817.63
8.2.80.0030.00618.81
8.2.70.0090.00017.63
8.2.60.0000.00817.93
8.2.50.0050.00318.07
8.2.40.0030.00618.28
8.2.30.0000.00718.23
8.2.20.0000.00817.79
8.2.10.0000.00818.11
8.2.00.0000.00717.73
8.1.280.0070.01025.92
8.1.270.0080.00023.92
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0030.00719.18
8.1.230.0120.00018.08
8.1.220.0050.00317.79
8.1.210.0050.00318.77
8.1.200.0060.00317.35
8.1.190.0080.00017.38
8.1.180.0050.00318.10
8.1.170.0000.01018.71
8.1.160.0040.00422.09
8.1.150.0000.00819.07
8.1.140.0040.00417.55
8.1.130.0000.00718.07
8.1.120.0040.00417.51
8.1.110.0040.00417.49
8.1.100.0030.00517.66
8.1.90.0070.00017.63
8.1.80.0030.00317.47
8.1.70.0070.00017.60
8.1.60.0080.00017.79
8.1.50.0000.00917.68
8.1.40.0030.00517.67
8.1.30.0000.00817.85
8.1.20.0050.00217.70
8.1.10.0050.00317.65
8.1.00.0000.00817.55
8.0.300.0040.00419.17
8.0.290.0070.00316.88
8.0.280.0040.00418.48
8.0.270.0000.00717.40
8.0.260.0030.00317.36
8.0.250.0030.00317.16
8.0.240.0060.00317.11
8.0.230.0000.00916.99
8.0.220.0070.00016.89
8.0.210.0030.00416.90
8.0.200.0080.00016.98
8.0.190.0030.00517.17
8.0.180.0040.00416.89
8.0.170.0000.00716.99
8.0.160.0090.00016.96
8.0.150.0040.00416.83
8.0.140.0040.00416.86
8.0.130.0000.00713.54
8.0.120.0040.00417.02
8.0.110.0000.00817.11
8.0.100.0000.00716.98
8.0.90.0070.00016.92
8.0.80.0120.00916.95
8.0.70.0050.00316.89
8.0.60.0080.00017.03
8.0.50.0070.00016.87
8.0.30.0100.00817.22
8.0.20.0100.01517.46
8.0.10.0040.00417.10
8.0.00.0130.01016.89
7.4.330.0000.00515.28
7.4.320.0030.00316.64
7.4.300.0000.00616.65
7.4.290.0040.00416.70
7.4.280.0080.00016.74
7.4.270.0030.00316.67
7.4.260.0030.00516.66
7.4.250.0030.00616.55
7.4.240.0030.00316.62
7.4.230.0030.00316.83
7.4.220.0120.00616.73
7.4.210.0060.01116.66
7.4.200.0000.00716.63
7.4.160.0030.01216.66
7.4.150.0060.01317.40
7.4.140.0070.01017.86
7.4.130.0090.01016.51
7.4.120.0090.00916.66
7.4.110.0170.00716.63
7.4.100.0150.00016.44
7.4.90.0080.00916.60
7.4.80.0040.01219.39
7.4.70.0090.00916.39
7.4.60.0030.01516.55
7.4.50.0000.00616.32
7.4.40.0080.00816.48
7.4.30.0090.00616.77
7.4.00.0000.01814.91
7.3.330.0030.00313.25
7.3.320.0000.00513.05
7.3.310.0040.00416.36
7.3.300.0040.00416.20
7.3.290.0070.00716.40
7.3.280.0100.00916.31
7.3.270.0130.00617.40
7.3.260.0110.00616.56
7.3.250.0080.01016.39
7.3.240.0160.00616.48
7.3.230.0090.00816.51
7.3.210.0130.01316.56
7.3.200.0090.01219.39
7.3.190.0130.00516.28
7.3.180.0130.00316.40
7.3.170.0090.01216.53
7.3.160.0030.01216.53
7.3.10.0110.00416.76
7.3.00.0100.00616.42
7.2.330.0110.00616.55
7.2.320.0140.00916.90
7.2.310.0100.00716.54
7.2.300.0160.00616.81
7.2.290.0030.01316.47
7.2.130.0060.00916.53
7.2.120.0060.01016.89
7.2.110.0030.00616.95
7.2.100.0030.01017.02
7.2.90.0080.00816.70
7.2.80.0030.01016.80
7.2.70.0070.00716.79
7.2.60.0080.01016.82
7.2.50.0060.00917.03
7.2.40.0030.01217.29
7.2.30.0060.00617.02
7.2.20.0060.00916.56
7.2.10.0090.00616.95
7.2.00.0050.00918.03
7.1.250.0100.00315.93
7.1.100.0080.00417.90
7.1.70.0000.01117.27
7.1.60.0100.01419.40
7.1.50.0070.01117.04
7.1.00.0030.07722.57
7.0.200.0000.01116.74
7.0.140.0030.07022.11
7.0.60.0100.06719.95
7.0.50.0000.09017.92
7.0.40.0100.07020.41
7.0.30.0300.07720.13
7.0.20.0330.07020.27
7.0.10.0100.08320.13
7.0.00.0170.07320.23
5.6.280.0070.07021.13
5.6.210.0030.08320.86
5.6.200.0030.04318.29
5.6.190.0030.08020.46
5.6.180.0200.08020.84
5.6.170.0230.04320.52
5.6.160.0170.08020.68
5.6.150.0030.07018.29
5.6.140.0030.04318.22
5.6.130.0070.08018.23
5.6.120.0000.06021.03
5.6.110.0030.08021.07
5.6.100.0130.07321.11
5.6.90.0170.03321.01
5.6.80.0030.07020.38
5.5.350.0230.06320.41
5.5.340.0030.04018.05
5.5.330.0070.08320.30
5.5.320.0270.07720.50
5.5.310.0200.04720.26
5.5.300.0130.05718.05
5.5.290.0030.07318.04
5.5.280.0170.06020.94
5.5.270.0130.04720.70
5.5.260.0000.06020.90
5.5.250.0170.02720.61
5.5.240.0030.07320.23
5.4.450.0800.06319.66
5.4.440.0570.06019.56
5.4.430.0700.05319.41
5.4.420.0900.05019.65
5.4.410.0100.05019.37
5.4.400.0570.05718.82
5.4.390.0530.07018.75
5.4.380.0200.07018.85
5.4.370.0130.03318.53
5.4.360.0170.03018.55
5.4.350.0080.04412.12
5.4.340.0070.03412.11
5.4.320.0100.04812.60
5.4.310.0070.03612.59
5.4.300.0090.03312.60
5.4.290.0040.04012.59
5.4.280.0070.03612.50
5.4.270.0040.04612.49
5.4.260.0100.04312.49
5.4.250.0050.05112.49
5.4.240.0060.04512.49
5.4.230.0040.04312.49
5.4.220.0070.04212.49
5.4.210.0050.04012.48
5.4.200.0080.03912.49
5.4.190.0070.03412.48
5.4.180.0070.03612.48
5.4.170.0090.03312.49
5.4.160.0060.03612.49
5.4.150.0030.03812.49
5.4.140.0050.04012.17
5.4.130.0100.03312.16
5.4.120.0050.04112.11
5.4.110.0070.03512.11
5.4.100.0040.03912.11
5.4.90.0070.04212.11
5.4.80.0070.04012.11
5.4.70.0120.03712.11
5.4.60.0080.03912.11
5.4.50.0080.03412.11
5.4.40.0080.04912.10
5.4.30.0060.03812.10
5.4.20.0050.04212.10
5.4.10.0070.03512.10
5.4.00.0050.03611.58
5.3.290.0090.05012.86
5.3.280.0080.03612.79
5.3.270.0090.03612.80
5.3.260.0080.04312.80
5.3.250.0070.03812.80
5.3.240.0040.03912.81
5.3.230.0050.03812.80
5.3.220.0080.03512.77
5.3.210.0080.03912.77
5.3.200.0070.03512.77
5.3.190.0080.03512.77
5.3.180.0050.03812.77
5.3.170.0070.03612.76
5.3.160.0050.03812.76
5.3.150.0080.03612.76
5.3.140.0050.03712.75
5.3.130.0110.03312.75
5.3.120.0070.03912.75
5.3.110.0090.04712.75
5.3.100.0030.04812.23
5.3.90.0050.04712.22
5.3.80.0090.04412.20
5.3.70.0070.04312.20
5.3.60.0070.04712.20
5.3.50.0070.04912.13
5.3.40.0050.04012.14
5.3.30.0060.03512.10
5.3.20.0020.03911.88
5.3.10.0050.03511.85
5.3.00.0040.03911.83
5.2.170.0060.0289.32
5.2.160.0030.0309.33
5.2.150.0060.0329.33
5.2.140.0080.0399.33
5.2.130.0070.0389.29
5.2.120.0060.0409.29
5.2.110.0090.0369.29
5.2.100.0020.0359.29
5.2.90.0050.0359.29
5.2.80.0060.0319.29
5.2.70.0030.0339.29
5.2.60.0090.0389.24
5.2.50.0050.0319.21
5.2.40.0080.0279.18
5.2.30.0030.0319.16
5.2.20.0060.0269.15
5.2.10.0030.0309.07
5.2.00.0040.0298.93
5.1.60.0040.0258.21
5.1.50.0020.0348.21
5.1.40.0020.0338.19
5.1.30.0080.0318.54
5.1.20.0070.0308.56
5.1.10.0040.0298.29
5.1.00.0050.0348.29
5.0.50.0040.0246.76
5.0.40.0040.0226.62
5.0.30.0060.0326.44
5.0.20.0040.0246.41
5.0.10.0020.0226.39
5.0.00.0030.0346.38
4.4.90.0050.0134.78
4.4.80.0040.0144.75
4.4.70.0020.0164.76
4.4.60.0020.0164.76
4.4.50.0030.0154.77
4.4.40.0030.0264.71
4.4.30.0030.0164.75
4.4.20.0030.0164.84
4.4.10.0030.0174.85
4.4.00.0030.0324.76
4.3.110.0030.0214.66
4.3.100.0030.0174.66
4.3.90.0010.0174.63
4.3.80.0040.0254.58
4.3.70.0050.0134.63
4.3.60.0030.0144.63
4.3.50.0030.0184.63
4.3.40.0060.0224.54
4.3.30.0020.0163.28
4.3.20.0040.0153.26
4.3.10.0050.0163.21
4.3.00.0170.0207.11

preferences:
43.02 ms | 401 KiB | 5 Q