3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ [ ["2011-11-18 00:00:00" => 'C'], ["2011-11-18 00:00:00" => 'I'], ["2011-11-18 00:00:00" => 'S'], ], [ ["2011-11-22 00:00:00" => 'C'], ["2011-11-22 00:00:00" => 'S'] ] ]; $result = []; array_walk_recursive($array, function ($_, $k) use (&$result) { $result[$k] = ($result[$k] ?? 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)
8.4.130.0110.01017.71
8.4.120.0110.00822.34
8.4.110.0110.01023.94
8.4.100.0120.00917.75
8.4.90.0060.00317.72
8.4.80.0020.00618.01
8.4.70.0130.00717.83
8.4.60.0120.00818.04
8.4.50.0060.00320.29
8.4.40.0030.00617.93
8.4.30.0040.00420.55
8.4.20.0160.00321.05
8.4.10.0430.00617.52
8.3.260.0110.01016.70
8.3.250.0120.00718.72
8.3.240.0110.01016.72
8.3.230.0040.00516.84
8.3.220.0070.00417.13
8.3.210.0050.00516.61
8.3.200.0130.00616.80
8.3.190.0070.00916.97
8.3.180.0130.00619.05
8.3.170.0120.00617.19
8.3.160.0040.01420.74
8.3.150.0150.00317.23
8.3.140.0300.01116.31
8.3.130.0390.00416.21
8.3.120.0400.00416.26
8.3.110.0360.00516.31
8.3.100.0350.01116.55
8.3.90.0440.00016.45
8.3.80.0300.01716.18
8.3.70.0350.01116.43
8.3.60.0380.00716.41
8.3.50.0320.01316.50
8.3.40.0420.00317.47
8.3.30.0320.00417.36
8.3.20.0450.00017.18
8.3.10.0240.00817.55
8.3.00.0130.00717.36
8.2.290.0070.00220.71
8.2.280.0040.00416.59
8.2.270.0100.01016.80
8.2.260.0300.00616.65
8.2.250.0320.00616.32
8.2.240.0260.01116.54
8.2.230.0210.01716.30
8.2.220.0210.01716.60
8.2.210.0240.01016.83
8.2.200.0300.00416.49
8.2.190.0280.00316.76
8.2.180.0290.00616.38
8.2.170.0270.01217.94
8.2.160.0340.00417.64
8.2.150.0280.01217.46
8.2.140.0250.01117.61
8.2.130.0310.01017.47
8.2.120.0250.01917.54
8.2.110.0410.00617.70
8.2.100.0320.00717.65
8.2.90.0390.00017.82
8.2.80.0320.00617.49
8.2.70.0390.00017.48
8.2.60.0280.01117.63
8.2.50.0350.00417.46
8.2.40.0240.01217.70
8.2.30.0260.01017.46
8.2.20.0310.00817.34
8.2.10.0220.01117.24
8.2.00.0340.00717.45
8.1.320.0140.00716.31

preferences:
19.95 ms | 403 KiB | 5 Q