3v4l.org

run code in 300+ PHP versions simultaneously
<?php $info = [ ['car' => 'Audi', 'previous_car' => 'BMW'], ['car' => 'Audi', 'previous_car' => 'Seat'], ['car' => 'Audi', 'previous_car' => 'BMW'], ['car' => 'BMW', 'previous_car' => 'BMW'], ['car' => 'Ford', 'previous_car' => 'Seat'], ]; $result = []; foreach ($info as $row) { foreach ($row as $k => $v) { $result[$k][$v] = ($result[$k][$v] ?? 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)
8.5.00.0140.00719.92
8.4.150.0020.00014.05
8.4.140.0120.01119.54
8.4.130.0090.01217.82
8.4.120.0110.00922.29
8.4.110.0110.00922.39
8.4.100.0060.00717.76
8.4.90.0150.00517.93
8.4.80.0100.01017.57
8.4.70.0100.00617.75
8.4.60.0090.01117.70
8.4.50.0100.01117.82
8.4.40.0060.00320.20
8.4.30.0120.00618.44
8.4.20.0150.00419.71
8.4.10.0030.00623.74
8.3.280.0060.01418.38
8.3.270.0150.00916.46
8.3.260.0070.01316.41
8.3.250.0080.01218.70
8.3.240.0110.00916.72
8.3.230.0100.00916.64
8.3.220.0040.00417.26
8.3.210.0140.00616.73
8.3.200.0130.00816.62
8.3.190.0110.00816.58
8.3.180.0120.00716.70
8.3.170.0120.00618.74
8.3.160.0040.01416.71
8.3.150.0090.00918.99
8.3.140.0040.01517.36
8.3.130.0060.00318.42
8.3.120.0050.00519.00
8.3.110.0090.00020.94
8.3.100.0040.00418.41
8.3.90.0050.00320.23
8.3.80.0060.00318.43
8.3.70.0140.00018.57
8.3.60.0130.00718.32
8.3.50.0160.00616.78
8.3.40.0070.00719.92
8.3.30.0120.00318.53
8.3.20.0050.00224.18
8.3.10.0080.00024.66
8.3.00.0040.00426.16
8.2.290.0110.00720.63
8.2.280.0110.00716.56
8.2.270.0070.01316.75
8.2.260.0000.00820.54
8.2.250.0120.00616.43
8.2.240.0110.00919.05
8.2.230.0060.00322.58
8.2.220.0060.01024.06
8.2.210.0000.00926.77
8.2.200.0090.00016.63
8.2.190.0120.00316.58
8.2.180.0170.00316.50
8.2.170.0110.00718.91
8.2.160.0090.00622.96
8.2.150.0080.00025.66
8.2.140.0050.00324.66
8.2.130.0060.00326.16
8.2.120.0040.00419.23
8.2.110.0030.00620.91
8.2.100.0120.00017.72
8.2.90.0030.00617.91
8.2.80.0000.00819.00
8.2.70.0050.00317.63
8.2.60.0080.00017.75
8.2.50.0150.00418.10
8.2.40.0170.00018.10
8.2.30.0080.00818.10
8.2.20.0170.00018.10
8.2.10.0120.00518.10
8.2.00.0080.00818.10
8.1.330.0120.00616.62
8.1.320.0110.00416.13
8.1.310.0060.00316.66
8.1.300.0090.00019.77
8.1.290.0070.00318.88
8.1.280.0150.00025.92
8.1.270.0000.00822.01
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0060.00322.15
8.1.230.0060.00620.95
8.1.220.0030.00517.74
8.1.210.0030.00618.77
8.1.200.0030.00617.23
8.1.190.0080.00017.23
8.1.180.0140.00018.10
8.1.170.0130.00318.10
8.1.160.0080.00818.10
8.1.150.0130.00318.10
8.1.140.0100.00718.10
8.1.130.0110.00518.10
8.1.120.0050.01018.10
8.1.110.0170.00018.10
8.1.100.0090.00618.10
8.1.90.0150.00418.10
8.1.80.0170.00018.10
8.1.70.0140.00318.10
8.1.60.0130.00418.10
8.1.50.0120.00618.10
8.1.40.0060.01118.10
8.1.30.0120.00918.10
8.1.20.0180.00018.10
8.1.10.0120.00618.10
8.1.00.0110.00618.10
8.0.300.0060.00320.09
8.0.290.0000.00717.16
8.0.280.0050.01118.10
8.0.270.0130.00418.10
8.0.260.0110.00518.10
8.0.250.0100.00518.10
8.0.240.0070.01018.10
8.0.230.0110.00618.10
8.0.220.0130.00318.10
8.0.210.0130.00418.10
8.0.200.0120.00418.10
8.0.190.0050.01118.10
8.0.180.0120.00518.10
8.0.170.0080.00818.10
8.0.160.0180.00018.10
8.0.150.0050.01418.10
8.0.140.0090.00618.10
8.0.130.0170.00018.10
8.0.120.0090.00918.10
8.0.110.0080.00818.10
8.0.100.0050.01118.10
8.0.90.0100.00518.10
8.0.80.0140.00718.10
8.0.70.0160.00018.10
8.0.60.0150.00018.10
8.0.50.0090.00918.10
8.0.30.0100.00518.10
8.0.20.0090.00618.10
8.0.10.0070.00718.10

preferences:
35.57 ms | 403 KiB | 5 Q