3v4l.org

run code in 300+ PHP versions simultaneously
<?php> $tree = array( 1 => array( 'parent' => 0 ), 2 => array( 'parent' => 1 ), 3 => array( 'parent' => 1 ), 4 => array( 'parent' => 2 ) ); $newtree = array(); foreach($tree as $leaf) { if (!isset($newtree[$leaf['parent']])) $newtree[$leaf['parent']]=array(); $newtree[$leaf['parent']][]=$leaf; } print_r($newtree); </?>

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
8.3.50.0100.00621.08
8.3.40.0070.00718.63
8.3.30.0110.00419.98
8.3.20.0000.00720.34
8.3.10.0070.00021.92
8.3.00.0050.00322.43
8.2.180.0120.00616.32
8.2.170.0140.00322.96
8.2.160.0070.00722.07
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00419.23
8.2.110.0030.00622.30
8.2.100.0080.00417.59
8.2.90.0000.00719.14
8.2.80.0000.00719.25
8.2.70.0030.00517.50
8.2.60.0080.00017.80
8.2.50.0040.00418.07
8.2.40.0080.00017.97
8.2.30.0050.00517.80
8.2.20.0040.00417.53
8.2.10.0040.00417.55
8.2.00.0040.00417.43
8.1.280.0090.00625.92
8.1.270.0040.00424.66
8.1.260.0020.00526.35
8.1.250.0000.00728.09
8.1.240.0090.00023.97
8.1.230.0070.00419.21
8.1.220.0040.00417.74
8.1.210.0030.00618.77
8.1.200.0060.00316.99
8.1.190.0000.00817.38
8.1.180.0050.00318.89
8.1.170.0040.00418.55
8.1.160.0040.00418.80
8.1.150.0030.00618.38
8.1.140.0070.00017.40
8.1.130.0070.00017.72
8.1.120.0030.00317.35
8.1.110.0040.00417.32
8.1.100.0040.00417.31
8.1.90.0030.00617.30
8.1.80.0040.00417.25
8.1.70.0000.00717.29
8.1.60.0050.00317.48
8.1.50.0000.00817.23
8.1.40.0060.00317.24
8.1.30.0020.00517.53
8.1.20.0040.00417.48
8.1.10.0080.00017.46
8.1.00.0000.00717.34
8.0.300.0000.00718.77
8.0.290.0040.00417.16
8.0.280.0050.00218.47
8.0.270.0000.00717.05
8.0.260.0030.00316.71
8.0.250.0000.00716.84
8.0.240.0000.00816.83
8.0.230.0030.00316.81
8.0.220.0000.00716.70
8.0.210.0000.00716.71
8.0.200.0060.00016.81
8.0.190.0040.00416.70
8.0.180.0050.00316.62
8.0.170.0030.00616.84
8.0.160.0000.00816.76
8.0.150.0070.00016.58
8.0.140.0070.00016.73
8.0.130.0000.00513.46
8.0.120.0080.00016.75
8.0.110.0000.00716.71
8.0.100.0030.00316.66
8.0.90.0000.00716.66
8.0.80.0120.00616.74
8.0.70.0040.00416.61
8.0.60.0000.00716.75
8.0.50.0050.00216.66
8.0.30.0060.01216.95
8.0.20.0140.00517.40
8.0.10.0000.00816.83
8.0.00.0070.01216.71
7.4.330.0030.00315.00
7.4.320.0000.00616.46
7.4.300.0030.00316.44
7.4.290.0100.00016.28
7.4.280.0040.00416.36
7.4.270.0030.00316.38
7.4.260.0060.00313.12
7.4.250.0070.00016.43
7.4.240.0030.00416.38
7.4.230.0000.00716.47
7.4.220.0100.01016.46
7.4.210.0080.00616.50
7.4.200.0000.00716.35
7.4.190.0000.00716.35
7.4.160.0060.01016.30
7.4.150.0070.01017.40
7.4.140.0090.00917.86
7.4.130.0080.00816.41
7.4.120.0080.00916.38
7.4.110.0130.00316.47
7.4.100.0120.01216.45
7.4.90.0060.01216.17
7.4.80.0070.01019.39
7.4.70.0110.00616.45
7.4.60.0120.00316.23
7.4.50.0040.00416.36
7.4.40.0040.01422.77
7.4.30.0070.01416.26
7.3.330.0050.00012.98
7.3.320.0030.00313.14
7.3.310.0030.00316.09
7.3.300.0070.00015.99
7.3.290.0030.01016.17
7.3.280.0100.00516.13
7.3.270.0110.00417.40
7.3.260.0040.01216.30
7.3.250.0100.00716.29
7.3.240.0100.01016.46
7.3.230.0100.00616.39
7.3.210.0120.00616.41
7.3.200.0070.01019.39
7.3.190.0120.00916.45
7.3.180.0000.01916.19
7.3.170.0120.00316.27
7.3.160.0120.00416.08
7.2.330.0090.00916.26
7.2.320.0070.01516.63
7.2.310.0070.01016.59
7.2.300.0130.00416.63
7.2.290.0100.00716.28
5.4.320.0040.04112.45
5.4.310.0080.03612.45
5.4.300.0080.03612.45
5.4.290.0040.04212.45
5.4.280.0090.04012.33
5.4.270.0070.04312.33
5.4.260.0060.03912.33
5.4.250.0080.03712.33
5.4.240.0040.03912.33
5.4.230.0070.03912.32
5.4.220.0070.03612.32
5.4.210.0070.03512.32
5.4.200.0070.04112.32
5.4.190.0050.04212.32
5.4.180.0060.03612.31
5.4.170.0080.03512.33
5.4.160.0060.03812.32
5.4.150.0070.03812.32
5.4.140.0080.03812.00
5.4.130.0070.03611.99
5.4.120.0050.03711.95
5.4.110.0050.03811.95
5.4.100.0060.03811.94
5.4.90.0060.03811.95
5.4.80.0030.04111.94
5.4.70.0060.03611.94
5.4.60.0070.03811.94
5.4.50.0060.03811.94
5.4.40.0050.03711.93
5.4.30.0050.03911.93
5.4.20.0060.04011.93
5.4.10.0070.03911.92
5.4.00.0070.03311.42
5.3.290.0100.06012.80
5.3.280.0060.04212.71
5.3.270.0080.03812.72
5.3.260.0050.04212.72
5.3.250.0060.03812.72
5.3.240.0080.03512.72
5.3.230.0060.04112.71
5.3.220.0070.03612.68
5.3.210.0090.04212.68
5.3.200.0060.03912.68
5.3.190.0070.03812.68
5.3.180.0080.03812.67
5.3.170.0050.04112.67
5.3.160.0050.04012.68
5.3.150.0060.03612.67
5.3.140.0070.03712.66
5.3.130.0080.04112.66
5.3.120.0060.03912.66
5.3.110.0070.04012.66
5.3.100.0070.03712.12
5.3.90.0090.03512.08
5.3.80.0060.03812.08
5.3.70.0060.03812.08
5.3.60.0080.04012.06
5.3.50.0070.04512.00
5.3.40.0070.04112.00
5.3.30.0050.03911.94
5.3.20.0080.03511.70
5.3.10.0060.03611.67
5.3.00.0060.03611.65

preferences:
54.8 ms | 401 KiB | 5 Q