3v4l.org

run code in 300+ PHP versions simultaneously
<?php function dot($array, $prepend = '') { $results = array(); foreach ($array as $key => $value) { if (is_array($value)) { $results = array_merge($results, dot($value, $prepend.$key.'.')); if ($key === 'foo') print_r($results); } else { $results[$prepend.$key] = $value; } } return $results; } $array = [ 'foo' => [], 'bar' => [ 'baz' => 1 ], ]; print_r(dot($array, 'prefix'));

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)
8.3.60.0040.01118.43
8.3.50.0120.00622.00
8.3.40.0110.00418.75
8.3.30.0070.00719.04
8.3.20.0040.00420.20
8.3.10.0090.00023.71
8.3.00.0090.00019.25
8.2.180.0070.00716.75
8.2.170.0110.00422.96
8.2.160.0070.00720.45
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0070.00026.16
8.2.120.0050.00322.08
8.2.110.0060.00320.35
8.2.100.0080.00417.72
8.2.90.0050.00319.24
8.2.80.0040.00417.97
8.2.70.0030.00617.63
8.2.60.0060.00318.03
8.2.50.0050.00318.07
8.2.40.0040.00418.16
8.2.30.0040.00418.13
8.2.20.0000.00817.76
8.2.10.0040.00418.11
8.2.00.0030.00617.84
8.1.280.0120.00625.92
8.1.270.0030.00523.95
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0000.01123.82
8.1.230.0080.00423.86
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0000.00917.35
8.1.180.0080.00018.10
8.1.170.0030.00520.44
8.1.160.0040.00422.06
8.1.150.0040.00418.86
8.1.140.0040.00417.33
8.1.130.0070.00017.84
8.1.120.0000.00717.38
8.1.110.0000.00717.30
8.1.100.0000.00717.42
8.1.90.0040.00417.37
8.1.80.0000.00717.50
8.1.70.0030.00317.35
8.1.60.0060.00917.50
8.1.50.0000.00817.58
8.1.40.0040.00417.48
8.1.30.0040.00417.62
8.1.20.0000.00817.50
8.1.10.0050.00317.57
8.1.00.0030.00517.44
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0030.00318.35
8.0.270.0000.00717.29
8.0.260.0030.00317.26
8.0.250.0030.00317.02
8.0.240.0000.00617.00
8.0.230.0030.00316.82
8.0.220.0070.00016.98
8.0.210.0070.00016.79
8.0.200.0000.00716.97
8.0.190.0000.00816.84
8.0.180.0030.00516.95
8.0.170.0040.00416.95
8.0.160.0000.00816.80
8.0.150.0000.00716.84
8.0.140.0070.00016.90
8.0.130.0060.00013.33
8.0.120.0040.00416.81
8.0.110.0070.00016.96
8.0.100.0070.00016.89
8.0.90.0040.00416.86
8.0.80.0100.00616.86
8.0.70.0040.00416.85
8.0.60.0060.00316.88
8.0.50.0050.00316.77
8.0.30.0140.00517.05
8.0.20.0110.00917.40
8.0.10.0000.00716.87
8.0.00.0140.00316.91
7.4.330.0030.00315.02
7.4.320.0030.00316.68
7.4.300.0030.00316.49
7.4.290.0030.00316.49
7.4.280.0050.00316.51
7.4.270.0040.00416.46
7.4.260.0050.00716.42
7.4.250.0000.00716.57
7.4.240.0050.00216.59
7.4.230.0030.00316.49
7.4.220.0040.01416.61
7.4.210.0070.00716.62
7.4.200.0030.00316.55
7.4.160.0080.00816.50
7.4.150.0160.01017.40
7.4.140.0080.01017.86
7.4.130.0110.01116.60
7.4.120.0070.01016.51
7.4.110.0150.00916.56
7.4.100.0030.01516.53
7.4.90.0080.00816.43
7.4.80.0070.01119.39
7.4.70.0140.01416.36
7.4.60.0160.00316.45
7.4.50.0050.00316.39
7.4.40.0150.00416.66
7.4.30.0040.01216.72
7.4.00.0080.00615.01
7.3.330.0020.00413.16
7.3.320.0000.00513.23
7.3.310.0050.00316.32
7.3.300.0030.00316.28
7.3.290.0060.00816.34
7.3.280.0090.00516.33
7.3.270.0220.00317.40
7.3.260.0100.00716.59
7.3.250.0100.00616.66
7.3.240.0130.00316.50
7.3.230.0070.01016.39
7.3.210.0100.00716.39
7.3.200.0050.01119.39
7.3.190.0040.01416.41
7.3.180.0040.01116.45
7.3.170.0140.00316.43
7.3.160.0090.00616.24
7.3.120.0120.00614.64
7.3.110.0070.01114.94
7.3.100.0030.01314.80
7.3.90.0060.00614.61
7.3.80.0090.00314.57
7.3.70.0000.01114.76
7.3.60.0040.00814.88
7.3.50.0100.00714.77
7.3.40.0110.00314.68
7.3.30.0080.00814.92
7.3.20.0030.01716.82
7.3.10.0090.00616.78
7.3.00.0160.00316.35
7.2.330.0120.00916.66
7.2.320.0110.00516.71
7.2.310.0100.00616.75
7.2.300.0180.00316.80
7.2.290.0030.02216.56
7.2.250.0100.00615.15
7.2.240.0100.00715.07
7.2.230.0090.00614.95
7.2.220.0070.00715.17
7.2.210.0030.01014.97
7.2.200.0080.00614.73
7.2.190.0030.01015.10
7.2.180.0120.00015.12
7.2.170.0060.00314.88
7.2.00.0070.00719.40
7.1.330.0070.00715.73
7.1.320.0030.01015.74
7.1.310.0030.00615.85
7.1.300.0070.01015.95
7.1.290.0060.00915.95
7.1.280.0130.00015.87
7.1.270.0060.00915.88
7.1.260.0030.01215.85
7.1.100.0090.00918.31
7.1.70.0030.00717.14
7.1.60.0170.00719.32
7.1.50.0000.02116.95
7.1.00.0030.07722.29
7.0.200.0080.00016.88
7.0.140.0030.07322.21
7.0.60.0070.04719.87
7.0.50.0070.04317.87
7.0.40.0070.06020.02
7.0.30.0470.04720.12
7.0.20.0330.08020.12
7.0.10.0200.06320.07
7.0.00.0100.07720.29
5.6.280.0030.07720.87
5.6.210.0100.08020.73
5.6.200.0030.04318.15
5.6.190.0070.05020.77
5.6.180.0200.04020.35
5.6.170.0270.08020.44
5.6.160.0070.05720.54
5.6.150.0100.07318.17
5.6.140.0030.05318.11
5.6.130.0070.07318.27
5.6.120.0070.04720.98
5.6.110.0200.07321.02
5.6.100.0170.06721.02
5.6.90.0070.08021.14
5.6.80.0070.08020.51
5.6.70.4430.04320.48
5.5.350.0130.08320.30
5.5.340.0070.08017.93
5.5.330.0030.06320.31
5.5.320.0330.04320.28
5.5.310.0070.04720.50
5.5.300.0100.05017.98
5.5.290.0030.05717.91
5.5.280.0030.05020.77
5.5.270.0030.05720.86
5.5.260.0070.09020.86
5.5.250.0170.07320.70
5.5.240.0300.06720.19
5.4.450.0670.06719.70
5.4.440.0830.05719.30
5.4.430.0870.05319.57
5.4.420.0070.05719.17
5.4.410.0700.05719.35
5.4.400.0730.05319.26
5.4.390.0770.04719.23
5.4.380.0870.04019.30
5.4.370.0500.06319.23
5.4.360.0730.06019.15
5.4.350.0630.05019.15
5.4.340.0030.03712.02
5.4.320.0080.03412.50
5.4.310.0070.03712.50
5.4.300.0060.03612.50
5.4.290.0050.03912.50
5.4.280.0080.03612.40
5.4.270.0070.03412.40
5.4.260.0050.03812.40
5.4.250.0030.04012.40
5.4.240.0060.04612.40
5.4.230.0080.03712.39
5.4.220.0070.03912.39
5.4.210.0020.03912.39
5.4.200.0040.03912.39
5.4.190.0070.03412.38
5.4.180.0040.03812.38
5.4.170.0050.03612.39
5.4.160.0050.03612.39
5.4.150.0050.03612.38
5.4.140.0050.03712.07
5.4.130.0050.03512.06
5.4.120.0100.03012.02
5.4.110.0080.03312.01
5.4.100.0070.04312.02
5.4.90.0110.04612.01
5.4.80.0080.04512.01
5.4.70.0040.03912.01
5.4.60.0040.03612.01
5.4.50.0070.03412.00
5.4.40.0060.03512.00
5.4.30.0030.03711.99
5.4.20.0060.03412.00
5.4.10.0060.03412.00
5.4.00.0060.03611.48
5.3.290.0060.03812.80
5.3.280.0080.03512.71
5.3.270.0060.03912.73
5.3.260.0060.03812.72
5.3.250.0070.03512.72
5.3.240.0070.03612.72
5.3.230.0050.03812.71
5.3.220.0060.03712.68
5.3.210.0100.03412.68
5.3.200.0040.03912.68
5.3.190.0030.04012.68
5.3.180.0090.03312.67
5.3.170.0070.03412.67
5.3.160.0060.03512.68
5.3.150.0100.03312.68
5.3.140.0070.03512.66
5.3.130.0080.03712.66
5.3.120.0070.04012.65
5.3.110.0080.03712.66
5.3.100.0080.04712.13
5.3.90.0030.04212.11
5.3.80.0070.03812.09
5.3.70.0060.03812.09
5.3.60.0080.03612.08
5.3.50.0070.03412.02
5.3.40.0050.03812.02
5.3.30.0090.03311.99
5.3.20.0040.03611.77
5.3.10.0070.03311.73
5.3.00.0060.03611.72
5.2.170.0070.0329.22
5.2.160.0060.0339.22
5.2.150.0040.0369.22
5.2.140.0040.0329.21
5.2.130.0030.0309.18
5.2.120.0080.0259.18
5.2.110.0030.0309.19
5.2.100.0060.0279.18
5.2.90.0020.0319.18
5.2.80.0020.0329.17
5.2.70.0030.0329.17
5.2.60.0030.0319.13
5.2.50.0050.0299.10
5.2.40.0040.0299.07
5.2.30.0050.0299.05
5.2.20.0070.0309.04
5.2.10.0050.0368.94
5.2.00.0060.0398.81
5.1.60.0070.0258.09
5.1.50.0020.0268.09
5.1.40.0050.0238.07
5.1.30.0030.0278.42
5.1.20.0020.0288.44
5.1.10.0050.0258.16
5.1.00.0060.0238.16
5.0.50.0040.0196.65
5.0.40.0040.0186.50
5.0.30.0010.0336.31
5.0.20.0000.0226.28
5.0.10.0020.0216.26
5.0.00.0050.0296.25
4.4.90.0030.0154.77
4.4.80.0030.0144.75
4.4.70.0020.0164.76
4.4.60.0020.0164.76
4.4.50.0040.0144.77
4.4.40.0010.0264.71
4.4.30.0010.0164.76
4.4.20.0000.0184.85
4.4.10.0040.0144.85
4.4.00.0010.0264.76
4.3.110.0050.0134.67
4.3.100.0010.0174.66
4.3.90.0030.0164.64
4.3.80.0050.0254.59
4.3.70.0020.0154.63
4.3.60.0020.0154.63
4.3.50.0040.0144.63
4.3.40.0030.0234.54
4.3.30.0010.0173.30
4.3.20.0020.0163.28
4.3.10.0010.0163.25
4.3.00.0130.0306.99

preferences:
40.82 ms | 401 KiB | 5 Q