3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [2,2,2,1,1,0,0,8]; $values_cache = []; usort($array, function ($a, $b) use (&$values_cache) { $key_a = isset($values_cache[$a]) ? $values_cache[$a] : ($values_cache[$a] = keyfn($a)); $key_b = isset($values_cache[$b]) ? $values_cache[$b] : ($values_cache[$b] = keyfn($b)); return $key_a <=> $key_b; }); echo '<pre>', print_r($array), '</pre>'; // TODO function keyfn($v) { echo 'call a keyfn' . PHP_EOL; return 2 * $v; }

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)
8.3.60.0070.00718.43
8.3.50.0120.00616.38
8.3.40.0070.01118.63
8.3.30.0070.00718.81
8.3.20.0040.00419.25
8.3.10.0040.00423.58
8.3.00.0080.00023.50
8.2.180.0120.00316.75
8.2.170.0120.00322.96
8.2.160.0130.00319.08
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0110.00320.45
8.2.120.0040.00426.35
8.2.110.0090.00319.22
8.2.100.0040.00817.91
8.2.90.0030.00617.88
8.2.80.0000.00817.97
8.2.70.0000.00818.04
8.2.60.0000.00818.04
8.2.50.0090.00018.10
8.2.40.0040.00420.85
8.2.30.0040.00419.30
8.2.20.0040.00418.15
8.2.10.0040.00419.49
8.2.00.0050.00219.59
8.1.280.0110.00425.92
8.1.270.0000.00723.99
8.1.260.0040.00426.35
8.1.250.0030.00728.09
8.1.240.0040.00719.13
8.1.230.0080.00320.85
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0030.00617.13
8.1.190.0040.00417.13
8.1.180.0090.00018.10
8.1.170.0030.00518.84
8.1.160.0070.00018.86
8.1.150.0000.00818.88
8.1.140.0080.00019.52
8.1.130.0080.00018.91
8.1.120.0000.00717.52
8.1.110.0040.00417.45
8.1.100.0060.00317.54
8.1.90.0050.00317.35
8.1.80.0040.00417.40
8.1.70.0000.00717.36
8.1.60.0070.00017.58
8.1.50.0030.00517.50
8.1.40.0000.00817.50
8.1.30.0040.00817.65
8.1.20.0070.00217.48
8.1.10.0040.00417.51
8.1.00.0000.00817.52
8.0.300.0070.00018.77
8.0.290.0060.00316.63
8.0.280.0070.00018.44
8.0.270.0070.00016.87
8.0.260.0000.00617.32
8.0.250.0070.00016.99
8.0.240.0080.00017.02
8.0.230.0000.00717.03
8.0.220.0000.00716.98
8.0.210.0000.00916.94
8.0.200.0000.00716.88
8.0.190.0000.00816.88
8.0.180.0060.00316.78
8.0.170.0040.00416.87
8.0.160.0000.00816.82
8.0.150.0060.00316.71
8.0.140.0030.00416.70
8.0.130.0000.00613.37
8.0.120.0050.00316.86
8.0.110.0000.00816.90
8.0.100.0070.00016.88
8.0.90.0000.00716.94
8.0.80.0050.01116.89
8.0.70.0000.00716.90
8.0.60.0070.00016.74
8.0.50.0000.00816.76
8.0.30.0110.00917.12
8.0.20.0150.00717.40
8.0.10.0050.00317.04
8.0.00.0090.00916.74
7.4.330.0030.00315.55
7.4.320.0000.00816.42
7.4.300.0060.00016.50
7.4.290.0040.00416.38
7.4.280.0030.00316.34
7.4.270.0000.00716.42
7.4.260.0040.00316.50
7.4.250.0000.00716.48
7.4.240.0040.00416.59
7.4.230.0000.00716.68
7.4.220.0050.00216.30
7.4.210.0110.00316.62
7.4.200.0030.00316.38
7.4.160.0090.00616.49
7.4.140.0110.01217.86
7.4.130.0130.00916.55
7.4.120.0090.00916.46
7.4.110.0030.01516.55
7.4.100.0170.00016.72
7.4.90.0090.00916.64
7.4.80.0000.01619.39
7.4.70.0130.00616.23
7.4.60.0070.01016.54
7.4.50.0040.01116.52
7.4.40.0130.01016.47
7.4.00.0030.01014.86
7.3.330.0060.00013.38
7.3.320.0030.00313.36
7.3.310.0030.00316.23
7.3.300.0080.00016.32
7.3.290.0000.00716.40
7.3.280.0060.00916.39
7.3.260.0100.00716.45
7.3.240.0120.00616.48
7.3.230.0070.01116.29
7.3.210.0100.01016.65
7.3.200.0140.00316.30
7.3.190.0090.00716.70
7.3.180.0030.01216.31
7.3.170.0090.00816.40
7.3.160.0070.01116.52
7.2.330.0180.00616.63
7.2.320.0080.01116.86
7.2.310.0090.00916.83
7.2.300.0070.01416.66
7.2.290.0230.00016.41
7.2.80.0120.01214.70
7.2.70.0180.00914.97
7.2.60.0130.01014.71
7.2.50.0160.00815.14
7.2.40.0180.00915.12
7.2.30.0240.00614.77
7.2.20.0150.00915.13
7.2.10.0240.00215.13
7.2.00.0200.00314.76
7.1.200.0100.00315.75
7.1.190.0210.00314.04
7.1.180.0170.00613.86
7.1.170.0330.00313.73
7.1.160.0190.00413.99
7.1.150.0140.01213.86
7.1.140.0260.00413.88
7.1.130.0180.00714.07
7.1.120.0220.00914.05
7.1.110.0140.01413.92
7.1.100.0280.00414.11
7.1.90.0210.00913.95
7.1.80.0280.00614.14
7.1.70.0290.00413.89
7.1.60.0480.01231.62
7.1.50.1260.00731.82
7.1.40.0300.01331.68
7.1.30.0350.01631.57
7.1.20.0440.00731.65
7.1.10.0250.00713.86
7.1.00.0140.00713.92

preferences:
33.09 ms | 400 KiB | 5 Q