3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( 55 => array( 'ident' => 'test 1', 'depth' => 1, ), 77 => array( 'parent_id' => 55, 'ident' => 'test 2', 'depth' => 2, ), 109 => array( 'parent_id' => 77, 'ident' => 'test 3', 'depth' => 3, ), 78 => array( 'parent_id' => 55, 'ident' => 'test 4', 'depth' => 2, ), 25 => array( 'ident' => 'test 5', 'depth' => 1, ) ); foreach ($array as $key => &$sub) { if (isset($sub['parent_id'])) { $array[$sub['parent_id']]['children'][$key] = &$sub; } } unset($sub); // unset the reference to make sure to not overwrite it later... // now remove the entries with parents foreach ($array as $key => $sub) { if (!isset($sub['parent_id'])) unset($array[$key]); } var_dump($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)
8.3.60.0110.00418.30
8.3.50.0090.01421.02
8.3.40.0110.00418.57
8.3.30.0150.00318.87
8.3.20.0040.00418.60
8.3.10.0030.00521.08
8.3.00.0040.00420.62
8.2.180.0060.01116.63
8.2.170.0120.00922.96
8.2.160.0000.01420.53
8.2.150.0090.00924.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0060.00321.04
8.2.110.0000.01020.23
8.2.100.0040.00717.84
8.2.90.0100.00019.03
8.2.80.0040.00419.38
8.2.70.0030.00617.50
8.2.60.0050.00518.03
8.2.50.0040.00418.07
8.2.40.0080.00018.28
8.2.30.0000.00719.38
8.2.20.0050.00317.73
8.2.10.0000.00817.82
8.2.00.0000.00817.73
8.1.280.0150.00325.92
8.1.270.0000.00823.99
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0100.00022.68
8.1.230.0070.00420.87
8.1.220.0000.00918.77
8.1.210.0040.00418.87
8.1.200.0080.00017.48
8.1.190.0000.00817.51
8.1.180.0040.00418.10
8.1.170.0040.00418.71
8.1.160.0070.00018.80
8.1.150.0040.00418.56
8.1.140.0060.00317.36
8.1.130.0030.00317.93
8.1.120.0040.00417.50
8.1.110.0080.00017.37
8.1.100.0040.00417.39
8.1.90.0030.00317.34
8.1.80.0020.00517.45
8.1.70.0030.00317.51
8.1.60.0070.00317.51
8.1.50.0000.00817.48
8.1.40.0000.00717.54
8.1.30.0000.00717.61
8.1.20.0000.00917.55
8.1.10.0030.00617.56
8.1.00.0000.00717.51
8.0.300.0050.00319.89
8.0.290.0050.00317.18
8.0.280.0070.00018.36
8.0.270.0000.00717.17
8.0.260.0000.00616.74
8.0.250.0040.00416.93
8.0.240.0030.00616.79
8.0.230.0030.00316.87
8.0.220.0070.00016.87
8.0.210.0000.00716.81
8.0.200.0030.00316.86
8.0.190.0000.00816.91
8.0.180.0080.00016.89
8.0.170.0000.00716.80
8.0.160.0000.00716.94
8.0.150.0040.00416.87
8.0.140.0070.00016.84
8.0.130.0000.00513.35
8.0.120.0030.00616.82
8.0.110.0030.00616.96
8.0.100.0040.00416.85
8.0.90.0000.00716.96
8.0.80.0060.00916.89
8.0.70.0000.00716.70
8.0.60.0000.00716.70
8.0.50.0000.00716.73
8.0.30.0100.01017.14
8.0.20.0110.01317.40
8.0.10.0000.00716.97
8.0.00.0130.01016.79
7.4.330.0000.00616.76
7.4.320.0030.00316.47
7.4.300.0030.00316.55
7.4.290.0000.00716.61
7.4.280.0040.00416.51
7.4.270.0000.00816.49
7.4.260.0050.00013.39
7.4.250.0000.00816.33
7.4.240.0030.00316.56
7.4.230.0030.00316.51
7.4.220.0060.01316.59
7.4.210.0070.00716.58
7.4.200.0050.00316.59
7.4.190.0050.00316.77
7.4.160.0190.00016.46
7.4.150.0100.01017.40
7.4.140.0110.00617.86
7.4.130.0170.00716.48
7.4.120.0110.00916.61
7.4.110.0130.00416.66
7.4.100.0120.00616.65
7.4.90.0070.01116.57
7.4.80.0100.01319.39
7.4.70.0180.00616.46
7.4.60.0100.00716.55
7.4.50.0060.00316.32
7.4.40.0070.00722.77
7.4.30.0130.00916.46
7.4.00.0040.01115.04
7.3.330.0080.00013.21
7.3.320.0040.00313.12
7.3.310.0000.00816.27
7.3.300.0000.00716.36
7.3.290.0040.01016.43
7.3.280.0120.00316.34
7.3.270.0120.00817.40
7.3.260.0080.01018.24
7.3.250.0080.01016.39
7.3.240.0090.00916.54
7.3.230.0110.00616.39
7.3.210.0160.00316.30
7.3.200.0100.00719.39
7.3.190.0110.01116.27
7.3.180.0090.00816.47
7.3.170.0040.01316.48
7.3.160.0080.00816.50
7.3.120.0030.01215.12
7.2.330.0110.00816.54
7.2.320.0090.00916.69
7.2.310.0150.00816.72
7.2.300.0120.00616.68
7.2.290.0050.01316.77
7.2.00.0000.01519.19
7.1.100.0000.00818.16
7.1.70.0030.00617.29
7.1.60.0000.02419.08
7.1.50.0140.02134.94
7.1.00.0030.03322.36
7.0.200.0050.00316.82
7.0.140.0000.07721.95
7.0.100.0000.05019.88
7.0.90.0370.06020.13
7.0.80.0430.07019.89
7.0.70.0330.08319.88
7.0.60.0030.05019.85
7.0.50.0400.07720.39
7.0.40.0170.06020.10
7.0.30.0030.08720.05
7.0.20.0130.05020.10
7.0.10.0200.08720.12
7.0.00.0070.09020.15
5.6.280.0030.07321.02
5.6.250.0070.04720.52
5.6.240.0100.06320.59
5.6.230.0100.08020.55
5.6.220.0100.08020.50
5.6.210.0100.04720.60
5.6.200.0070.09021.11
5.6.190.0070.08321.03
5.6.180.0100.08021.04
5.6.170.0130.07321.00
5.6.160.0100.08321.01
5.6.150.0030.08321.11
5.6.140.0100.08021.05
5.6.130.0130.07021.02
5.6.120.0100.08020.88
5.6.110.0070.07721.10
5.6.100.0070.08321.02
5.6.90.0070.08020.93
5.6.80.0070.04720.52
5.6.70.0100.04720.40
5.6.60.0100.07320.39
5.6.50.0070.08320.39
5.6.40.0100.08320.39
5.6.30.0130.05720.29
5.6.20.0030.08020.38
5.6.10.0000.04320.41
5.6.00.0070.08320.38
5.5.380.0200.06320.47
5.5.370.0000.05320.34
5.5.360.0070.08320.33
5.5.350.0130.07720.36
5.5.340.0100.07020.82
5.5.330.0170.07720.80
5.5.320.0070.08020.93
5.5.310.0200.06320.83
5.5.300.0070.07020.84
5.5.290.0070.08720.88
5.5.280.0030.08020.91
5.5.270.0070.08320.85
5.5.260.0100.08320.63
5.5.250.0070.09020.63
5.5.240.0070.08020.27
5.5.230.0200.06720.23
5.5.220.0070.06320.20
5.5.210.0130.07020.28
5.5.200.0030.05020.14
5.5.190.0130.07720.08
5.5.180.0100.06720.10
5.5.160.0000.07720.25
5.5.150.0070.07020.27
5.5.140.0030.08020.11
5.5.130.0030.08720.12
5.5.120.0200.04720.27
5.5.110.0000.08020.14
5.5.100.0170.04720.06
5.5.90.0170.06020.16
5.5.80.0030.08720.06
5.5.70.0000.09020.07
5.5.60.0130.07319.94
5.5.50.0070.07720.14
5.5.40.0030.04720.07
5.5.30.0100.04020.04
5.5.20.0030.07720.04
5.5.10.0000.08720.04
5.5.00.0100.04319.99
5.4.450.0030.08019.47
5.4.440.0100.07719.11
5.4.430.0130.07019.24
5.4.420.0070.06319.27
5.4.410.0030.08019.25
5.4.400.0170.06718.98
5.4.390.0270.05319.05
5.4.380.0070.07719.10
5.4.370.0070.08019.04
5.4.360.0130.07718.98
5.4.350.0100.07318.90
5.4.340.0030.07718.98
5.4.320.0170.06018.98
5.4.310.0030.08018.81
5.4.300.0070.07319.06
5.4.290.0070.08018.94
5.4.280.0030.07719.12
5.4.270.0030.06718.90
5.4.260.0070.07718.81
5.4.250.0000.08319.02
5.4.240.0130.07019.13
5.4.230.0130.03719.05
5.4.220.0130.07318.78
5.4.210.0100.04318.80
5.4.200.0000.09018.89
5.4.190.0030.05719.03
5.4.180.0100.07018.96
5.4.170.0130.07018.93
5.4.160.0200.03018.76
5.4.150.0070.07318.92
5.4.140.0100.06316.28
5.4.130.0100.07316.34
5.4.120.0030.06316.32
5.4.110.0030.04316.42
5.4.100.0170.06716.43
5.4.90.0030.07316.25
5.4.80.0100.05016.24
5.4.70.0070.06316.41
5.4.60.0130.07016.28
5.4.50.0130.06316.37
5.4.40.0170.06716.43
5.4.30.0070.07716.23
5.4.20.0100.07316.19
5.4.10.0030.04316.29
5.4.00.0100.07315.80
5.3.290.0030.09314.68
5.3.280.0100.05714.58
5.3.270.0100.06014.62
5.3.260.0070.08314.60
5.3.250.0070.06714.56
5.3.240.0030.07714.60
5.3.230.0100.07014.59
5.3.220.0030.07314.48
5.3.210.0070.04314.43
5.3.200.0030.07014.53
5.3.190.0130.07714.53
5.3.180.0100.07014.40
5.3.170.0070.08014.50
5.3.160.0070.07314.54
5.3.150.0030.08314.56
5.3.140.0070.04014.42
5.3.130.0030.07314.46
5.3.120.0030.08014.54
5.3.110.0030.05714.46
5.3.100.0170.06714.02
5.3.90.0030.08013.98
5.3.80.0070.07713.88
5.3.70.0070.08013.88
5.3.60.0000.05014.01
5.3.50.0100.06713.91
5.3.40.0070.07013.91
5.3.30.0030.08313.77
5.3.20.0030.08013.70
5.3.10.0100.07013.66
5.3.00.0030.07713.61
5.2.170.0100.06011.09
5.2.160.0070.05010.99
5.2.150.0070.06311.14
5.2.140.0070.06310.93
5.2.130.0070.06011.09
5.2.120.0100.05710.95
5.2.110.0000.06711.02
5.2.100.0100.05311.02
5.2.90.0030.05711.05
5.2.80.0100.05711.08
5.2.70.0070.06010.91
5.2.60.0030.05711.07
5.2.50.0130.06010.81
5.2.40.0000.05711.02
5.2.30.0100.04310.89
5.2.20.0070.03310.82
5.2.10.0030.05310.88
5.2.00.0030.06310.73
5.1.60.0030.04310.05
5.1.50.0030.04010.00
5.1.40.0030.03710.02
5.1.30.0030.05710.23
5.1.20.0000.04310.40
5.1.10.0070.0509.91
5.1.00.0030.04310.07
5.0.50.0070.0208.54
5.0.40.0030.0408.50
5.0.30.0130.0578.50
5.0.20.0000.0408.50
5.0.10.0030.0408.50
5.0.00.0070.0538.50
4.4.90.0000.0278.50
4.4.80.0000.0378.50
4.4.70.0000.0308.50
4.4.60.0000.0378.50
4.4.50.0030.0378.50
4.4.40.0030.0538.50
4.4.30.0030.0238.50
4.4.20.0000.0278.50
4.4.10.0030.0178.50
4.4.00.0030.0538.50
4.3.110.0030.0308.50
4.3.100.0100.0308.50
4.3.90.0000.0308.50
4.3.80.0030.0478.50
4.3.70.0030.0378.50
4.3.60.0070.0238.50
4.3.50.0030.0378.50
4.3.40.0000.0508.50
4.3.30.0030.0338.50
4.3.20.0030.0208.50
4.3.10.0000.0338.50
4.3.00.0000.0308.50

preferences:
42.54 ms | 401 KiB | 5 Q