3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ 1 => [ 1 => [ 'anna', 'alice' ], 2 => [ 'bob', 'bartold' ] ], 2 => [ 1 => [ 'carol' ], 2 => [ 'david' ] ] ]; $result = []; $prevKey = 0; array_walk_recursive($array, function ($value, $key, $prevKey) use (&$result) { $prevKey = $key; if (!is_array($value)) { echo "{$prevKey} <br /> -- {$value} <br />"; } }); var_dump($result);

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)
8.3.60.0090.00916.63
8.3.50.0130.00921.96
8.3.40.0070.00718.98
8.3.30.0130.00319.09
8.3.20.0080.00020.16
8.3.10.0040.00421.90
8.3.00.0080.00021.02
8.2.180.0110.00716.75
8.2.170.0100.01022.96
8.2.160.0040.01122.17
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0090.00026.16
8.2.120.0050.00319.56
8.2.110.0140.00320.47
8.2.100.0040.00818.03
8.2.90.0030.00619.30
8.2.80.0030.00517.97
8.2.70.0040.00417.63
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0000.00919.93
8.2.30.0040.00418.11
8.2.20.0040.00417.63
8.2.10.0040.00418.14
8.2.00.0030.00617.80
8.1.280.0120.00325.92
8.1.270.0040.00420.65
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0040.00422.16
8.1.230.0000.01119.11
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0000.00817.48
8.1.180.0000.00818.10
8.1.170.0000.00818.59
8.1.160.0040.00422.02
8.1.150.0070.00018.84
8.1.140.0040.00419.15
8.1.130.0040.00417.84
8.1.120.0000.00717.52
8.1.110.0040.00417.36
8.1.100.0080.00017.49
8.1.90.0030.00617.51
8.1.80.0000.00717.40
8.1.70.0030.00317.37
8.1.60.0060.00317.52
8.1.50.0050.00317.55
8.1.40.0000.00817.52
8.1.30.0050.00517.60
8.1.20.0000.00817.60
8.1.10.0030.00617.46
8.1.00.0080.00317.57
8.0.300.0070.00018.77
8.0.290.0050.00216.75
8.0.280.0040.00418.29
8.0.270.0000.00717.16
8.0.260.0000.00717.09
8.0.250.0070.00016.86
8.0.240.0040.00417.00
8.0.230.0050.00216.86
8.0.220.0040.00416.90
8.0.210.0030.00316.83
8.0.200.0030.00316.91
8.0.190.0000.00716.94
8.0.180.0050.00216.90
8.0.170.0000.00716.97
8.0.160.0030.00316.94
8.0.150.0040.00416.79
8.0.140.0030.00616.80
8.0.130.0050.00013.41
8.0.120.0040.00416.92
8.0.110.0040.00416.89
8.0.100.0040.00416.82
8.0.90.0000.00716.79
8.0.80.0120.00416.93
8.0.70.0000.00716.87
8.0.60.0060.00316.78
8.0.50.0040.00416.79
8.0.30.0100.01517.16
8.0.20.0110.00817.40
8.0.10.0050.00216.93
8.0.00.0140.00517.02
7.4.330.0000.00515.09
7.4.320.0060.00016.61
7.4.300.0000.00616.66
7.4.290.0000.00716.50
7.4.280.0100.00016.40
7.4.270.0030.00316.60
7.4.260.0030.00316.48
7.4.250.0000.00716.57
7.4.240.0080.00016.54
7.4.230.0070.00016.67
7.4.220.0040.01716.67
7.4.210.0090.00516.56
7.4.200.0030.00316.61
7.4.160.0100.00716.68
7.4.150.0000.01917.40
7.4.140.0080.00817.86
7.4.130.0090.01016.62
7.4.120.0090.01116.67
7.4.110.0140.00316.61
7.4.100.0060.01116.51
7.4.90.0150.00316.64
7.4.80.0030.01316.62
7.4.70.0140.00416.49
7.4.60.0000.01616.59
7.4.50.0060.00316.37
7.4.40.0070.01016.60
7.4.30.0100.01016.65
7.4.00.0130.00315.08
7.3.330.0030.00313.32
7.3.320.0100.00313.24
7.3.310.0040.00416.38
7.3.300.0040.00416.42
7.3.290.0040.00416.34
7.3.280.0100.00716.33
7.3.270.0000.02417.40
7.3.260.0040.01516.44
7.3.250.0150.00616.48
7.3.240.0080.00816.51
7.3.230.0090.01516.47
7.3.210.0100.00616.49
7.3.200.0070.01019.39
7.3.190.0080.00816.62
7.3.180.0000.01616.48
7.3.170.0110.01116.38
7.3.160.0210.00016.35
7.3.00.0040.00816.69
7.2.330.0170.00016.77
7.2.320.0070.01116.50
7.2.310.0130.00616.27
7.2.300.0120.00416.61
7.2.290.0040.01816.31
7.2.130.0100.00016.58
7.2.120.0030.00916.84
7.2.110.0040.00816.73
7.2.100.0060.01016.95
7.2.90.0030.00916.56
7.2.80.0000.01116.61
7.2.70.0070.01016.79
7.2.60.0040.00816.93
7.2.50.0050.00516.73
7.2.40.0070.00716.81
7.2.30.0030.00916.71
7.2.20.0130.00616.73
7.2.10.0110.00316.92
7.2.00.0050.00917.95
7.1.250.0030.00715.79
7.1.240.0040.00715.90
7.1.230.0040.00515.68
7.1.220.0070.00715.47
7.1.210.0060.00615.72
7.1.200.0080.00815.75
7.1.190.0030.00715.88
7.1.180.0150.00315.80
7.1.170.0150.00315.88
7.1.160.0090.00615.39
7.1.150.0000.01315.49
7.1.140.0040.00715.52
7.1.130.0070.00415.49
7.1.120.0070.00715.73
7.1.110.0070.00315.66
7.1.100.0070.01016.96
7.1.90.0000.01415.76
7.1.80.0060.00615.72
7.1.70.0130.00316.40
7.1.60.0070.00917.52
7.1.50.0050.01216.45
7.1.40.0070.00715.69
7.1.30.0000.01115.71
7.1.20.0040.00815.39
7.1.10.0030.00615.74
7.1.00.0070.03818.96
7.0.330.0070.00715.50
7.0.320.0110.00415.33
7.0.310.0060.00615.18
7.0.300.0060.00315.13
7.0.290.0000.01015.39
7.0.280.0080.00815.04
7.0.270.0000.01315.15
7.0.260.0030.00915.36
7.0.250.0070.00715.52
7.0.240.0040.00415.16
7.0.230.0100.00715.46
7.0.220.0060.00615.31
7.0.210.0090.00615.36
7.0.200.0030.00515.97
7.0.190.0100.00415.11
7.0.180.0110.00415.54
7.0.170.0050.00315.24
7.0.160.0070.00715.50
7.0.150.0030.00615.31
7.0.140.0020.03218.81
7.0.130.0070.00415.56
7.0.120.0000.01515.44
7.0.110.0110.00015.47
7.0.100.0030.00715.57
7.0.90.0120.00015.13
7.0.80.0070.00415.54
7.0.70.0080.00415.61
7.0.60.0050.04617.46
7.0.50.0080.03716.63
7.0.40.0030.05016.95
7.0.30.0120.03916.80
7.0.20.0130.04416.89
7.0.10.0080.02616.82
7.0.00.0020.03716.90
5.6.380.0030.01014.41
5.6.370.0110.00414.66
5.6.360.0080.00814.63
5.6.350.0030.01014.18
5.6.340.0100.00314.01
5.6.330.0000.01514.27
5.6.320.0070.01014.50
5.6.310.0040.01114.74
5.6.300.0030.01114.55
5.6.290.0030.00914.27
5.6.280.0090.03517.56
5.6.270.0040.00714.51
5.6.260.0040.00714.35
5.6.250.0080.00314.25
5.6.240.0040.00714.11
5.6.230.0030.00614.54
5.6.220.0060.00614.16
5.6.210.0090.02417.45
5.6.200.0050.04616.13
5.6.190.0100.02117.37
5.6.180.0220.02317.54
5.6.170.0130.02317.37
5.6.160.0080.04217.57
5.6.150.0060.04416.23
5.6.140.0030.04416.31
5.6.130.0080.03816.28
5.6.120.0060.04617.61
5.6.110.0070.04617.69
5.6.100.0110.02817.59
5.6.90.0070.03017.59
5.6.80.0140.03517.30
5.6.70.0070.00414.05
5.6.60.0090.00614.03
5.6.50.0070.00714.09
5.6.40.0040.01114.20
5.6.30.0060.00614.36
5.6.20.0000.01214.00
5.6.10.0030.00714.40
5.6.00.0070.00714.39
5.5.380.0000.00911.60
5.5.370.0040.00411.60
5.5.360.0060.00611.60
5.5.350.0070.02215.94
5.5.340.0060.03614.84
5.5.330.0070.02315.99
5.5.320.0150.02215.90
5.5.310.0200.04315.97
5.5.300.0020.02214.83
5.5.290.0070.04414.79
5.5.280.0050.04516.27
5.5.270.0040.02316.24
5.5.260.0100.03716.22
5.5.250.0030.03516.14
5.5.240.0030.02315.87
5.5.230.0070.00011.60
5.5.220.0040.00411.60
5.5.210.0050.00311.60
5.5.200.0030.00611.60
5.5.190.0000.00611.60
5.5.180.0090.00011.60
5.5.170.0000.00611.60
5.5.160.0030.00611.60
5.5.150.0000.01111.60
5.5.140.0060.00611.60
5.5.130.0000.01111.60
5.5.120.0000.00811.60
5.5.110.0060.00311.60
5.5.100.0060.00011.60
5.5.90.0070.00311.60
5.5.80.0100.00011.60
5.5.70.0030.00711.60
5.5.60.0030.00611.60
5.5.50.0000.01011.60
5.5.40.0100.00011.60
5.5.30.0040.00411.60
5.5.20.0040.00411.60
5.5.10.0030.00711.60
5.5.00.0000.00711.60
5.4.450.0350.02915.53
5.4.440.0430.03115.65
5.4.430.0350.03015.58
5.4.420.0280.02815.54
5.4.410.0530.03115.46
5.4.400.0530.02515.33
5.4.390.0110.03315.20
5.4.380.0120.03015.22
5.4.370.0100.03115.04
5.4.360.0080.03215.11
5.4.350.0140.02915.22
5.4.340.0150.02815.20
5.4.330.0060.00011.60
5.4.320.0180.03315.03
5.4.310.0140.03115.05
5.4.300.0080.03415.05
5.4.290.0050.03715.10
5.4.280.0100.03015.11
5.4.270.0090.04015.24
5.4.260.0080.03115.05
5.4.250.0140.04115.08
5.4.240.0040.03815.04
5.4.230.0210.02915.06
5.4.220.0150.02715.09
5.4.210.0120.03015.05
5.4.200.0080.02814.19
5.4.190.0150.02515.10
5.4.180.0030.03915.05
5.4.170.0130.03215.19
5.4.160.0100.03115.21
5.4.150.0080.03615.10
5.4.140.0170.02313.94
5.4.130.0050.03713.92
5.4.120.0110.03413.95
5.4.110.0160.03013.91
5.4.100.0070.03414.01
5.4.90.0100.04013.95
5.4.80.0150.03314.01
5.4.70.0120.03913.93
5.4.60.0110.03113.99
5.4.50.0170.03013.90
5.4.40.0100.02813.89
5.4.30.0080.03013.95
5.4.20.0050.03513.94
5.4.10.0150.03313.90
5.4.00.0140.02213.67
5.3.290.0100.03613.10
5.3.280.0080.03113.09
5.3.270.0120.03113.05
5.3.260.0130.02813.15
5.3.250.0050.03513.08
5.3.240.0080.03513.09
5.3.230.0100.03713.07
5.3.220.0080.03813.10
5.3.210.0120.03513.08
5.3.200.0120.02913.13
5.3.190.0080.03913.11
5.3.180.0100.03013.12
5.3.170.0140.03113.06
5.3.160.0130.02513.04
5.3.150.0140.02513.08
5.3.140.0040.03913.07
5.3.130.0120.03013.02
5.3.120.0120.02813.08
5.3.110.0090.03513.04
5.3.100.0120.02512.87
5.3.90.0110.02712.86
5.3.80.0050.03512.77
5.3.70.0110.02812.78
5.3.60.0060.03112.80
5.3.50.0060.02612.72
5.3.40.0080.02812.77
5.3.30.0110.02512.80
5.3.20.0050.03012.62
5.3.10.0090.02912.59
5.3.00.0100.02812.63
5.2.170.0060.02511.39
5.2.160.0090.02111.39
5.2.150.0100.02011.41
5.2.140.0100.02311.33
5.2.130.0090.02811.33
5.2.120.0070.02811.33
5.2.110.0070.02911.35
5.2.100.0080.02311.37
5.2.90.0100.02411.36
5.2.80.0050.02711.30
5.2.70.0110.02111.34
5.2.60.0050.02811.30
5.2.50.0030.03411.30
5.2.40.0100.02211.32
5.2.30.0030.02611.31
5.2.20.0060.02811.36
5.2.10.0050.02511.28
5.2.00.0080.02511.18
5.1.60.0060.02110.78
5.1.50.0050.02110.82
5.1.40.0070.01810.82
5.1.30.0050.02310.97
5.1.20.0050.02310.98
5.1.10.0060.02010.84
5.1.00.0070.02110.88
5.0.50.0040.01510.14
5.0.40.0020.01810.01
5.0.30.0040.0239.92
5.0.20.0060.0159.95
5.0.10.0030.0179.95
5.0.00.0030.0249.92
4.4.90.0030.0138.76
4.4.80.0020.0148.74
4.4.70.0070.0088.73
4.4.60.0020.0148.74
4.4.50.0050.0118.75
4.4.40.0060.0178.73
4.4.30.0030.0168.73
4.4.20.0090.0088.79
4.4.10.0000.0158.77
4.4.00.0030.0208.78
4.3.110.0000.0188.70
4.3.100.0030.0158.72
4.3.90.0070.0128.69
4.3.80.0050.0198.73
4.3.70.0000.0188.71
4.3.60.0070.0138.68
4.3.50.0050.0128.71
4.3.40.0020.0218.72
4.3.30.0050.0118.37
4.3.20.0000.0158.37
4.3.10.0020.0148.37
4.3.00.0080.0119.34

preferences:
70.03 ms | 401 KiB | 5 Q