3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* 1 2 3 4 5 - 6 - 7 */ $a = ['d'=>1, 'l'=>&$b, 'r'=>&$c]; $b = ['d'=>2, 'l'=>&$d, 'r'=>&$e]; $c = ['d'=>3, 'l'=>null, 'r'=>&$f]; $d = ['d'=>4, 'l'=>null, 'r'=>&$g]; $e = ['d'=>5, 'l'=>null, 'r'=>null]; $f = ['d'=>6, 'l'=>null, 'r'=>null]; $g = ['d'=>7, 'l'=>null, 'r'=>null]; bfs($a); echo "\n"; dfs($a); function bfs($t) { $queue = [$t]; while ($queue) { $node = array_shift($queue); echo $node['d']; if (is_array($node['l'])) { array_push($queue, $node['l']); } if (is_array($node['r'])) { array_push($queue, $node['r']); } } } function dfs($t) { $stack = [$t]; while ($stack) { $node = array_pop($stack); echo $node['d']; if (is_array($node['r'])) { array_push($stack, $node['r']); } if (is_array($node['l'])) { array_push($stack, $node['l']); } } }

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)
8.3.60.0090.00618.68
8.3.50.0090.00916.50
8.3.40.0040.01118.79
8.3.30.0040.01118.66
8.3.20.0040.00418.98
8.3.10.0040.00421.86
8.3.00.0080.00019.35
8.2.180.0070.00716.75
8.2.170.0110.00422.96
8.2.160.0030.01020.39
8.2.150.0070.00025.66
8.2.140.0030.00524.66
8.2.130.0070.00020.39
8.2.120.0040.00426.35
8.2.110.0050.00522.29
8.2.100.0070.00417.84
8.2.90.0050.00319.22
8.2.80.0080.00018.03
8.2.70.0030.00517.63
8.2.60.0060.00317.90
8.2.50.0060.00318.10
8.2.40.0000.00820.30
8.2.30.0070.00019.20
8.2.20.0030.00618.13
8.2.10.0000.00718.13
8.2.00.0080.00018.07
8.1.280.0100.00725.92
8.1.270.0050.00323.97
8.1.260.0080.00026.35
8.1.250.0050.00228.09
8.1.240.0040.00421.39
8.1.230.0060.00617.42
8.1.220.0000.00817.74
8.1.210.0080.00018.77
8.1.200.0030.00617.35
8.1.190.0030.00517.23
8.1.180.0040.00418.10
8.1.170.0040.00418.58
8.1.160.0040.00418.95
8.1.150.0000.00918.89
8.1.140.0040.00419.64
8.1.130.0040.00418.86
8.1.120.0000.00717.47
8.1.110.0030.00517.37
8.1.100.0000.00817.43
8.1.90.0030.00817.38
8.1.80.0000.00717.46
8.1.70.0040.00417.41
8.1.60.0050.00317.57
8.1.50.0000.00817.48
8.1.40.0070.00417.51
8.1.30.0040.00417.51
8.1.20.0040.00417.52
8.1.10.0040.00417.50
8.1.00.0070.00017.41
8.0.300.0040.00418.77
8.0.290.0000.00816.72
8.0.280.0030.00318.39
8.0.270.0040.00417.23
8.0.260.0040.00416.89
8.0.250.0050.00216.99
8.0.240.0040.00416.84
8.0.230.0000.00716.84
8.0.220.0000.00816.93
8.0.210.0040.00416.81
8.0.200.0060.00016.88
8.0.190.0040.00416.97
8.0.180.0040.00416.96
8.0.170.0000.00716.93
8.0.160.0000.00716.88
8.0.150.0080.00016.80
8.0.140.0070.00016.82
8.0.130.0080.00013.30
8.0.120.0040.00416.75
8.0.110.0070.00016.78
8.0.100.0000.00716.80
8.0.90.0000.00816.78
8.0.80.0030.01416.95
8.0.70.0040.00416.80
8.0.60.0070.00016.88
8.0.50.0040.00416.91
8.0.30.0110.01116.94
8.0.20.0130.00517.41
8.0.10.0040.00416.98
8.0.00.0040.01516.82
7.4.330.0000.00415.55
7.4.320.0030.00316.58
7.4.300.0030.00316.46
7.4.290.0090.00016.52
7.4.280.0000.00716.42
7.4.270.0040.00416.66
7.4.260.0000.00716.60
7.4.250.0030.00716.62
7.4.240.0000.00716.43
7.4.230.0030.00316.51
7.4.220.0110.00716.51
7.4.210.0030.01116.55
7.4.200.0040.00416.46
7.4.160.0090.00716.57
7.4.150.0170.00017.40
7.4.140.0070.01317.86
7.4.130.0070.01116.57
7.4.120.0140.00916.56
7.4.110.0090.00916.66
7.4.100.0100.01016.56
7.4.90.0080.00916.32
7.4.80.0100.00619.39
7.4.70.0090.00916.32
7.4.60.0100.00716.50
7.4.50.0030.01316.21
7.4.40.0100.00616.45
7.4.30.0180.00316.42
7.4.00.0070.01114.96
7.3.330.0060.00013.15
7.3.320.0000.00613.23
7.3.310.0030.00316.14
7.3.300.0060.00016.39
7.3.290.0020.00516.42
7.3.280.0070.00916.36
7.3.270.0180.00617.40
7.3.260.0050.01216.34
7.3.250.0110.00916.37
7.3.240.0070.01116.64
7.3.230.0100.00916.67
7.3.210.0070.01716.34
7.3.200.0120.00616.30
7.3.190.0080.00716.55
7.3.180.0170.00716.36
7.3.170.0140.00716.59
7.3.160.0060.01016.42
7.3.120.0090.00914.77
7.3.110.0060.01015.03
7.3.100.0040.01514.64
7.3.90.0140.00714.73
7.3.80.0000.01114.95
7.3.70.0080.00414.77
7.3.60.0030.01014.83
7.3.50.0070.01014.91
7.3.40.0100.00614.70
7.3.30.0070.01014.86
7.3.20.0000.01016.74
7.3.10.0000.01316.72
7.3.00.0100.00716.72
7.2.330.0000.01816.82
7.2.320.0070.01016.61
7.2.310.0100.00716.43
7.2.300.0030.01316.60
7.2.290.0040.01216.67
7.2.250.0070.01115.19
7.2.240.0070.01314.91
7.2.230.0070.01115.27
7.2.220.0090.00914.98
7.2.210.0100.00615.20
7.2.200.0040.01114.99
7.2.190.0070.00715.20
7.2.180.0090.00015.27
7.2.170.0030.01415.00
7.2.60.0060.01017.08
7.2.00.0040.01119.41
7.1.330.0070.00715.82
7.1.320.0070.00715.87
7.1.310.0080.00415.88
7.1.300.0030.00915.58
7.1.290.0100.00315.76
7.1.280.0060.01215.62
7.1.270.0060.01015.76
7.1.260.0070.00415.78
7.1.200.0110.00015.72
7.1.100.0080.00618.06
7.1.70.0000.00917.38
7.1.60.0370.02333.36
7.1.50.3800.01733.12
7.1.40.4000.02032.57
7.1.30.3530.02032.89
7.1.20.3270.02332.85
7.1.10.2600.01014.94
7.1.00.2900.01314.62
7.0.200.0130.01014.95
7.0.190.3770.00714.66
7.0.180.3700.01014.49
7.0.170.4270.01314.54
7.0.160.4800.01314.47
7.0.150.3170.01714.72
7.0.140.3130.01714.71
7.0.130.0670.02014.73
7.0.120.3500.01714.44
7.0.110.3230.01314.46
7.0.100.2930.02014.30
7.0.90.2870.01014.60
7.0.80.2270.01714.47
7.0.70.3230.00714.47
7.0.60.2100.00714.31
7.0.50.2070.01714.45
7.0.40.1830.01014.65
7.0.30.2400.01314.59
7.0.20.2270.01014.53
7.0.10.2230.01014.54
7.0.00.2030.01314.67

preferences:
36.67 ms | 400 KiB | 5 Q