3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ "2022-10-30" => ['▶'], "2022-10-31" => ['▶'], "2022-11-09" => ['▶'], "2022-11-07" => ['▶'] ]; $result = []; foreach ($array as $key => $value) { $ym = substr($key, 0, 7); if (!isset($lookup[$ym])) { $result[$key] = $value; $lookup[$ym] = $key; } elseif ($lookup[$ym] < $key) { unset($result[$lookup[$ym]]); $result[$key] = $value; $lookup[$ym] = $key; } } var_export($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)
8.3.70.0070.00716.63
8.3.60.0040.01116.75
8.3.50.0040.01118.36
8.3.40.0070.00720.14
8.3.30.0120.00918.69
8.3.20.0040.00424.18
8.3.10.0040.00424.66
8.3.00.0040.00426.16
8.2.190.0170.00316.75
8.2.180.0000.01825.92
8.2.170.0110.00718.84
8.2.160.0070.00722.96
8.2.150.0020.00525.66
8.2.140.0000.00824.66
8.2.130.0030.00526.16
8.2.120.0030.00718.09
8.2.110.0100.00021.99
8.2.100.0070.00417.79
8.2.90.0060.00318.28
8.2.80.0050.00320.39
8.2.70.0040.00417.50
8.2.60.0050.00317.63
8.2.50.0040.00417.80
8.2.40.0040.00419.91
8.2.30.0000.00719.42
8.2.20.0070.00021.18
8.2.10.0040.00418.02
8.2.00.0070.00019.17
8.1.280.0140.00025.92
8.1.270.0070.00024.66
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0030.00623.88
8.1.230.0040.00820.97
8.1.220.0000.00817.76
8.1.210.0040.00418.77
8.1.200.0030.00617.48
8.1.190.0060.00317.35
8.1.180.0040.00418.10
8.1.170.0030.00617.62
8.1.160.0070.00018.89
8.1.150.0090.00318.54
8.1.140.0040.00417.36
8.1.130.0000.00717.49
8.1.120.0090.00517.57
8.1.110.0150.00317.46
8.1.100.0040.01317.54
8.1.90.0150.00317.44
8.1.80.0120.00317.46
8.1.70.0080.00817.49
8.1.60.0130.00717.50
8.1.50.0080.01117.55
8.1.40.0170.00317.49
8.1.30.0130.00617.56
8.1.20.0110.00617.57
8.1.10.0120.00617.49
8.1.00.0140.00617.52
8.0.300.0040.00420.07
8.0.290.0060.00316.75
8.0.280.0000.00718.50
8.0.270.0030.00316.73
8.0.260.0000.00716.81
8.0.250.0110.00416.76
8.0.240.0140.00016.86
8.0.230.0120.00416.73
8.0.220.0130.00316.67
8.0.210.0100.00516.79
8.0.200.0090.00716.90
8.0.190.0060.00916.73
8.0.180.0130.00316.83
8.0.170.0130.00416.75
8.0.160.0080.00816.96
8.0.150.0070.00716.80
8.0.140.0140.00016.80
8.0.130.0060.00816.76
8.0.120.0050.01016.79
8.0.110.0100.00516.68
8.0.100.0110.00416.81
8.0.90.0090.00616.84
8.0.80.0090.00616.89
8.0.70.0120.00316.75
8.0.60.0110.00416.79
8.0.50.0110.00316.83
8.0.30.0040.01116.89
8.0.20.0090.00516.76
8.0.10.0160.00017.02
7.4.330.0050.00015.55
7.4.320.0070.01016.45
7.4.300.0080.00816.39
7.4.290.0100.00716.40
7.4.280.0090.00616.38
7.4.270.0110.00316.42
7.4.260.0100.00016.37
7.4.250.0120.00416.44
7.4.240.0070.01316.43
7.4.230.0140.00516.41
7.4.220.0130.00016.38
7.4.210.0110.00516.48
7.4.200.0090.00616.55
7.4.190.0100.00516.43
7.4.180.0080.00816.57
7.4.160.0130.00316.61
7.4.150.0070.00216.51
7.4.140.0030.00616.45
7.4.130.0090.00016.42
7.4.120.0060.00316.31
7.4.110.0050.00516.39
7.4.100.0050.00516.32
7.4.90.0000.00916.42
7.4.80.0070.00316.27
7.4.70.0050.00516.33
7.4.60.0050.00516.27
7.4.50.0030.00616.31
7.4.40.0090.00216.38
7.4.30.0030.00616.25
7.4.20.0050.00516.38
7.4.10.0050.00516.49
7.4.00.0050.00516.29

preferences:
18.77 ms | 401 KiB | 5 Q