3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array = array( 'a' => 'a', 'b' => null, 'c' => array( 'a' => null, 'b' => 'b', ), 'd' => array( 'a' => null ) ); $result = array_walk_recursive_delete($array); echo"<pre>"; print_r($result); echo"<pre>"; function array_walk_recursive_delete(array $array) { foreach ($array as $key => $value) { if (is_array($value)) { $value = array_walk_recursive_delete($value); } if ($value == null) { unset($array[$key]); } } return $array; }

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)
8.5.30.0130.00417.64
8.5.20.0100.00816.74
8.5.10.0110.00620.02
8.5.00.0110.01019.72
8.4.180.0110.01119.80
8.4.170.0150.00620.28
8.4.160.0120.01123.99
8.4.150.0080.00416.89
8.4.140.0120.01117.56
8.4.130.0120.00718.77
8.4.120.0100.00924.17
8.4.110.0140.00722.38
8.4.100.0100.00718.90
8.4.90.0130.00718.77
8.4.80.0140.00518.60
8.4.70.0050.00317.59
8.4.60.0100.01018.77
8.4.50.0130.00717.89
8.4.40.0070.01317.48
8.4.30.0110.00017.41
8.4.20.0100.01017.96
8.4.10.0090.00017.54
8.3.300.0160.00520.81
8.3.290.0110.00820.82
8.3.280.0100.01020.03
8.3.270.0110.00716.80
8.3.260.0130.00616.69
8.3.250.0090.00918.94
8.3.240.0130.00517.15
8.3.230.0090.01016.68
8.3.220.0110.00719.00
8.3.210.0040.00416.70
8.3.200.0090.00316.57
8.3.190.0130.00817.04
8.3.180.0120.00620.63
8.3.170.0120.00318.85
8.3.160.0070.01120.70
8.3.150.0040.01416.84
8.3.140.0140.00417.41
8.3.130.0080.01118.43
8.3.120.0040.00420.85
8.3.110.0040.00416.54
8.3.100.0040.00418.31
8.3.90.0000.00726.77
8.3.80.0060.00316.63
8.3.70.0070.01118.43
8.3.60.0070.00718.41
8.3.50.0040.01522.87
8.3.40.0070.01418.85
8.3.30.0140.00718.92
8.3.20.0050.00220.29
8.3.10.0000.00821.94
8.3.00.0080.00019.04
8.2.300.0090.00922.32
8.2.290.0100.00820.39
8.2.280.0090.01018.13
8.2.270.0120.00618.94
8.2.260.0040.00418.29
8.2.250.0040.00418.89
8.2.240.0040.00418.38
8.2.230.0060.00320.94
8.2.220.0040.00424.06
8.2.210.0100.01026.77
8.2.200.0110.00016.38
8.2.190.0140.00016.63
8.2.180.0070.01425.92
8.2.170.0110.00418.83
8.2.160.0110.00420.35
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0040.00420.75
8.2.110.0060.00319.23
8.2.100.0080.00417.66
8.2.90.0080.00019.21
8.2.80.0050.00317.97
8.2.70.0040.00418.03
8.2.60.0040.00417.50
8.2.50.0050.00318.10
8.2.40.0000.00822.15
8.2.30.0020.00519.40
8.2.20.0050.00317.74
8.2.10.0030.00518.10
8.2.00.0040.00417.73
8.1.340.0130.00717.44
8.1.330.0070.01222.02
8.1.320.0120.00716.13
8.1.310.0120.00618.41
8.1.300.0150.00417.73
8.1.290.0090.00030.84
8.1.280.0030.01025.92
8.1.270.0130.00319.00
8.1.260.0000.00926.35
8.1.250.0050.00328.09
8.1.240.0000.01219.13
8.1.230.0070.00417.82
8.1.220.0040.00417.78
8.1.210.0000.00818.77
8.1.200.0070.00317.13
8.1.190.0040.00417.13
8.1.180.0040.00418.10
8.1.170.0040.00418.64
8.1.160.0000.00718.82
8.1.150.0070.00018.90
8.1.140.0030.00517.44
8.1.130.0070.00021.83
8.1.120.0030.00317.45
8.1.110.0070.00017.50
8.1.100.0030.00417.46
8.1.90.0080.00017.39
8.1.80.0040.00417.49
8.1.70.0040.00417.42
8.1.60.0060.00317.53
8.1.50.0050.00317.40
8.1.40.0000.00817.51
8.1.30.0000.00817.59
8.1.20.0040.00417.62
8.1.10.0000.00817.40
8.1.00.0050.00317.38
8.0.300.0000.00718.77
8.0.290.0030.00516.75
8.0.280.0030.00318.43
8.0.270.0070.00017.23
8.0.260.0000.00718.55
8.0.250.0000.00616.81
8.0.240.0040.00417.00
8.0.230.0030.00316.98
8.0.220.0000.00816.80
8.0.210.0030.00316.75
8.0.200.0060.00016.89
8.0.190.0040.00416.82
8.0.180.0000.00716.75
8.0.170.0050.00216.88
8.0.160.0070.00016.98
8.0.150.0000.00716.81
8.0.140.0000.01016.77
8.0.130.0050.00013.27
8.0.120.0000.00816.87
8.0.110.0000.00716.77
8.0.100.0000.00716.84
8.0.90.0040.00316.84
8.0.80.0070.01516.88
8.0.70.0070.00016.93
8.0.60.0000.00716.77
8.0.50.0000.00716.84
8.0.30.0140.00517.09
8.0.20.0090.00917.40
8.0.10.0040.00417.05
8.0.00.0090.01016.93
7.4.330.0000.00515.03
7.4.320.0000.00616.45
7.4.300.0050.00216.35
7.4.290.0000.00716.57
7.4.280.0030.00616.50
7.4.270.0000.00716.58
7.4.260.0000.00716.65
7.4.250.0070.00016.36
7.4.240.0040.00416.54
7.4.230.0000.00616.34
7.4.220.0160.00016.56
7.4.210.0090.00616.36
7.4.200.0070.00016.41
7.4.160.0090.00516.52
7.4.150.0130.00717.40
7.4.140.0110.00617.86
7.4.130.0090.00916.54
7.4.120.0090.00916.43
7.4.110.0150.00616.64
7.4.100.0150.00316.60
7.4.90.0090.01616.59
7.4.80.0140.00319.39
7.4.70.0080.00816.59
7.4.60.0110.00616.62
7.4.50.0030.00716.49
7.4.40.0100.00616.39
7.4.30.0090.00816.55
7.4.00.0130.00315.08
7.3.330.0020.00213.13
7.3.320.0000.00513.26
7.3.310.0030.00316.16
7.3.300.0070.00016.25
7.3.290.0070.00716.26
7.3.280.0110.00716.26
7.3.270.0110.00717.40
7.3.260.0060.01216.52
7.3.250.0100.00716.47
7.3.240.0090.00916.36
7.3.230.0070.01016.50
7.3.210.0130.00316.54
7.3.200.0150.00819.39
7.3.190.0070.01016.38
7.3.180.0030.01316.41
7.3.170.0060.01016.34
7.3.160.0090.00616.71
7.2.330.0110.00616.67
7.2.320.0150.00616.68
7.2.310.0150.00216.68
7.2.300.0070.01016.57
7.2.290.0060.01116.69
7.2.60.0040.00817.03
7.1.200.0060.00615.68
7.1.70.0130.00017.21
7.1.60.0140.01019.57
7.1.50.0040.00716.71
7.1.00.0100.06722.34
7.0.200.0070.00316.67
7.0.140.0070.03321.95
7.0.120.0000.04322.16
7.0.110.0030.04321.94
7.0.100.0130.06322.11
7.0.90.0170.05721.98
7.0.80.0070.07722.13
7.0.70.0100.08321.99
7.0.60.0030.05722.00
7.0.50.0100.04022.15
7.0.40.0000.04319.91
7.0.30.0000.04020.05
7.0.20.0030.04020.13
7.0.10.0070.05320.02
7.0.00.0100.04320.00
5.6.280.0100.06721.03
5.6.270.0030.07020.93
5.6.260.0030.05021.07
5.6.250.0170.03020.84
5.6.240.0070.05020.98
5.6.230.0030.06320.96
5.6.220.0000.04020.74
5.6.210.0070.06020.89
5.6.200.0070.05320.86
5.6.190.0070.04320.96
5.6.180.0100.07720.83
5.6.170.0000.05020.96
5.6.160.0070.05020.98
5.6.150.0030.04020.89
5.6.140.0130.05020.87
5.6.130.0030.06020.88
5.6.120.0000.04321.00
5.6.110.0030.08020.95
5.6.100.0070.09320.86
5.6.90.0070.04020.93
5.6.80.0070.07320.32
5.6.70.0000.08720.13
5.6.60.0030.07320.27
5.6.50.0000.04720.26
5.6.40.0030.08020.31
5.6.30.0030.03720.14
5.6.20.0070.04320.39
5.6.10.0070.05320.31
5.6.00.0070.06320.08
5.5.380.0000.04017.56
5.5.370.0030.03717.54
5.5.360.0030.07317.67
5.5.350.0000.04017.71
5.5.340.0030.04018.08
5.5.330.0030.04018.24
5.5.320.0000.07017.93
5.5.310.0030.06318.21
5.5.300.0100.04018.09
5.5.290.0130.06718.22
5.5.280.0000.07018.13
5.5.270.0000.07017.92
5.5.260.0100.03318.09
5.5.250.0000.04018.04
5.5.240.0070.08017.35
5.5.230.0030.06717.45
5.5.220.0000.04017.46
5.5.210.0030.07317.51
5.5.200.0100.05017.31
5.5.190.0030.07017.28
5.5.180.0000.04017.62
5.5.160.0000.05317.45
5.5.150.0030.03717.26
5.5.140.0030.03717.43
5.5.130.0100.03017.42
5.5.120.0000.05317.26
5.5.110.0000.04017.57
5.5.100.0070.03317.19
5.5.90.0030.04017.32
5.5.80.0030.03717.50
5.5.70.0100.04317.33
5.5.60.0130.02717.07
5.5.50.0030.04317.34
5.5.40.0100.03317.16
5.5.30.0130.02317.34
5.5.20.0000.05717.15
5.5.10.0030.04017.07
5.5.00.0030.05317.16
5.4.450.0030.04719.36
5.4.440.0000.07019.25
5.4.430.0100.07319.41
5.4.420.0070.05019.25
5.4.410.0070.07019.45
5.4.400.0030.03718.95
5.4.390.0100.07718.95
5.4.380.0030.08018.92
5.4.370.0070.03319.17
5.4.360.0000.04018.94
5.4.350.0130.06018.91
5.4.340.0030.03719.27
5.4.320.0070.06019.02
5.4.310.0000.07019.16
5.4.300.0100.04019.16
5.4.290.0030.03718.98
5.4.280.0030.04018.94
5.4.270.0100.03019.07
5.4.260.0000.04019.09
5.4.250.0070.06018.93
5.4.240.0000.04318.94
5.4.230.0070.03718.96
5.4.220.0070.03718.92
5.4.210.0030.03719.02
5.4.200.0000.04319.11
5.4.190.0070.06319.27
5.4.180.0030.04319.14
5.4.170.0030.03719.23
5.4.160.0030.03319.23
5.4.150.0030.04318.90
5.4.140.0100.06016.51
5.4.130.0030.05316.32
5.4.120.0030.05016.44
5.4.110.0070.03016.52
5.4.100.0030.03316.59
5.4.90.0030.04316.35
5.4.80.0000.03716.39
5.4.70.0030.04716.42
5.4.60.0000.06016.27
5.4.50.0000.07016.16
5.4.40.0070.07316.32
5.4.30.0030.03716.41
5.4.20.0000.03716.37
5.4.10.0030.07316.55
5.4.00.0000.04315.78
5.3.290.0100.03314.65
5.3.280.0070.07014.83
5.3.270.0070.03314.57
5.3.260.0070.06714.83
5.3.250.0000.03714.70
5.3.240.0000.05014.63
5.3.230.0070.06314.59
5.3.220.0070.03314.60
5.3.210.0070.04014.69
5.3.200.0000.03714.57
5.3.190.0130.07014.55
5.3.180.0030.05314.55
5.3.170.0070.07314.41
5.3.160.0000.04314.57
5.3.150.0070.07014.55
5.3.140.0000.05314.51
5.3.130.0030.04314.40
5.3.120.0000.04014.54
5.3.110.0030.03714.54
5.3.100.0000.04014.09
5.3.90.0070.04313.98
5.3.80.0030.03314.15
5.3.70.0000.04014.10
5.3.60.0030.04714.08
5.3.50.0000.03713.95
5.3.40.0000.03714.08
5.3.30.0030.06314.03
5.3.20.0030.03313.55
5.3.10.0030.03013.73
5.3.00.0000.04313.72
5.2.170.0030.02711.28
5.2.160.0000.03011.14
5.2.150.0000.03311.11
5.2.140.0030.03011.22
5.2.130.0030.04011.08
5.2.120.0000.04311.17
5.2.110.0030.03011.09
5.2.100.0000.03011.23
5.2.90.0030.03011.18
5.2.80.0030.02711.11
5.2.70.0030.02311.17
5.2.60.0000.04711.06
5.2.50.0000.03311.08
5.2.40.0000.03311.05
5.2.30.0000.03311.00
5.2.20.0030.05311.10
5.2.10.0100.05310.93
5.2.00.0030.05710.57
5.1.60.0000.04010.25
5.1.50.0030.0209.98
5.1.40.0030.02310.14
5.1.30.0030.04710.57
5.1.20.0000.02310.36
5.1.10.0000.02710.04
5.1.00.0000.0339.90
5.0.50.0000.0239.65
5.0.40.0000.0209.65
5.0.30.0000.0279.65
5.0.20.0000.0309.65
5.0.10.0030.0339.65
5.0.00.0000.0509.65
4.4.90.0000.0139.65
4.4.80.0000.0139.65
4.4.70.0030.0339.65
4.4.60.0000.0339.65
4.4.50.0000.0179.65
4.4.40.0000.0239.65
4.4.30.0000.0379.65
4.4.20.0000.0309.65
4.4.10.0000.0139.65
4.4.00.0000.0479.65
4.3.110.0030.0209.65
4.3.100.0000.0339.65
4.3.90.0070.0279.65
4.3.80.0000.0339.65
4.3.70.0000.0139.65
4.3.60.0030.0339.65
4.3.50.0000.0139.65
4.3.40.0000.0379.65
4.3.30.0000.0209.65
4.3.20.0030.0139.65
4.3.10.0030.0209.65
4.3.00.0030.0279.65

preferences:
52.76 ms | 2236 KiB | 5 Q