3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ['toxic', 'irritant', 'flammable'], ['toxic', 'irritant'], ['toxic'], ]; $iterator = new RecursiveIteratorIterator( new RecursiveArrayIterator($array) ); $result = []; foreach ($iterator as $leafNode) { $result[$leafNode] = ($result[$leafNode] ?? 0) + 1; } var_export($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)
8.5.10.0040.00518.41
8.5.00.0100.01120.00
8.4.160.0130.00823.72
8.4.150.0020.00014.05
8.4.140.0110.01017.60
8.4.130.0150.00619.58
8.4.120.0110.00820.95
8.4.110.0050.00618.73
8.4.100.0090.01117.80
8.4.90.0120.00820.81
8.4.80.0100.00318.96
8.4.70.0090.01118.83
8.4.60.0060.00418.73
8.4.50.0150.00623.93
8.4.40.0070.01318.75
8.4.30.0090.01018.76
8.4.20.0140.00719.71
8.4.10.0030.00519.48
8.3.280.0130.00618.31
8.3.270.0100.00916.51
8.3.260.0160.00416.44
8.3.250.0090.01218.61
8.3.240.0120.00816.67
8.3.230.0100.00916.41
8.3.220.0050.00418.84
8.3.210.0070.00118.40
8.3.200.0090.00716.71
8.3.190.0140.01118.97
8.3.180.0100.00919.11
8.3.170.0090.00919.00
8.3.160.0100.00718.34
8.3.150.0060.01319.08
8.3.140.0170.00020.85
8.3.130.0040.00418.34
8.3.120.0190.00019.07
8.3.110.0060.00320.94
8.3.100.0090.00016.66
8.3.90.0080.00018.18
8.3.80.0060.00318.31
8.3.70.0060.00918.20
8.3.60.0180.00316.41
8.3.50.0100.00620.21
8.3.40.0290.00317.50
8.3.30.0320.00417.25
8.3.20.0320.00717.38
8.3.10.0320.00019.25
8.3.00.0340.00017.38
8.2.290.0070.00219.06
8.2.280.0120.00820.38
8.2.270.0070.01116.84
8.2.260.0120.00617.33
8.2.250.0000.00818.59
8.2.240.0080.01116.97
8.2.230.0040.00422.58
8.2.220.0060.00324.06
8.2.210.0070.00726.77
8.2.200.0000.01116.50
8.2.190.0060.00916.58
8.2.180.0270.00616.50
8.2.170.0280.00917.84
8.2.160.0230.01317.63
8.2.150.0210.01717.49
8.2.140.0230.01317.38
8.2.130.0230.01317.38
8.2.120.0240.00917.25
8.2.110.0300.00719.13
8.2.100.0330.00917.25
8.2.90.0260.01117.38
8.2.80.0290.00917.13
8.2.70.0250.01117.25
8.2.60.0350.00417.25
8.2.50.0350.00617.25
8.2.40.0280.00617.25
8.2.30.0220.01118.87
8.2.20.0230.00617.25
8.2.10.0300.00017.38
8.2.00.0230.00617.25
8.1.330.0100.01016.00
8.1.320.0140.00516.13
8.1.310.0040.00418.68
8.1.300.0140.00317.86
8.1.290.0090.00018.88
8.1.280.0270.00616.00
8.1.270.0250.00017.25
8.1.260.0300.00317.48
8.1.250.0230.01217.48
8.1.240.0260.00717.25
8.1.230.0290.00317.13
8.1.220.0210.01317.13
8.1.210.0230.01017.13
8.1.200.0290.00417.21
8.1.190.0180.01517.00
8.1.180.0240.00817.25
8.1.170.0240.00719.00
8.1.160.0230.00817.13
8.1.150.0190.00817.25
8.1.140.0210.00917.13
8.1.130.0260.00616.88
8.1.120.0170.01316.88
8.1.110.0170.01317.13
8.1.100.0260.00419.10
8.1.90.0200.01017.00
8.1.80.0250.00716.75
8.1.70.0180.01117.25
8.1.60.0310.00317.13
8.1.50.0190.01518.83
8.1.40.0260.00717.13
8.1.30.0280.00417.09
8.1.20.0280.00717.25
8.1.10.0320.00317.25
8.1.00.0270.00518.76

preferences:
35.92 ms | 403 KiB | 5 Q