3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ 'Foo', 'bAr' => 'BaR', 'suB' => [ 'a' => 1, 2 => 'b', 'C' => null, ], 'obj' => (object) [ 'd' => 1.333, 'SubArR' => [ 'This' => 'Is', 'a' => 'challenge', ] ] ]; function recursiveMapper(array|object &$level, callable $callback) { $new = []; foreach ($level as $k => $v) { $new[$k] = match (gettype($v)) { 'string' => $callback($v), 'array', 'object' => (__FUNCTION__)($v, $callback), default => $v }; } if (gettype($level) === 'object') { $new = (object) $new; } return $new; } var_export(recursiveMapper($array, 'strtolower'));

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)
8.4.130.0140.00617.55
8.4.120.0080.01120.64
8.4.110.0110.00820.41
8.4.100.0120.00917.61
8.4.90.0130.00718.86
8.4.80.0080.00817.77
8.4.70.0060.00318.06
8.4.60.0110.01018.81
8.4.50.0140.00718.90
8.4.40.0170.00317.70
8.4.30.0120.00618.71
8.4.20.0120.00621.41
8.4.10.0040.00419.40
8.3.260.0070.00316.67
8.3.250.0120.00720.98
8.3.240.0090.01016.76
8.3.230.0090.01016.43
8.3.220.0110.00817.30
8.3.210.0120.00718.65
8.3.200.0030.00516.91
8.3.190.0090.01118.91
8.3.180.0110.00916.42
8.3.170.0120.00420.68
8.3.160.0120.00618.36
8.3.150.0130.00717.13
8.3.140.0160.00320.75
8.3.130.0070.00718.37
8.3.120.0090.01420.68
8.3.110.0050.00520.94
8.3.100.0090.00018.43
8.3.90.0040.00418.55
8.3.80.0200.00730.84
8.3.70.0110.01130.84
8.3.60.0130.00630.84
8.3.50.0130.00030.84
8.3.40.0100.00630.84
8.3.30.0060.01030.84
8.3.20.0000.00930.84
8.3.10.0060.00630.84
8.3.00.0060.00630.84
8.2.290.0120.00620.71
8.2.280.0100.01218.39
8.2.270.0150.00417.28
8.2.260.0110.00716.99
8.2.250.0090.00016.73
8.2.240.0080.00818.84
8.2.230.0070.00322.58
8.2.220.0000.00824.06
8.2.210.0000.00826.77
8.2.200.0100.00230.84
8.2.190.0050.00530.84
8.2.180.0070.00430.84
8.2.170.0030.00730.84
8.2.160.0040.00730.84
8.2.150.0100.00030.84
8.2.140.0050.00530.84
8.2.130.0000.00930.84
8.2.120.0100.00030.84
8.2.110.0050.00530.84
8.2.100.0100.00030.84
8.2.90.0050.00530.84
8.2.80.0100.00030.84
8.2.70.0050.00530.84
8.2.60.0030.00730.84
8.2.50.0000.01030.84
8.2.40.0030.00730.84
8.2.30.0070.00430.84
8.2.20.0090.00330.84
8.2.10.0040.00730.84
8.2.00.0070.00430.84
8.1.330.0100.00621.79
8.1.320.0140.00616.01
8.1.310.0080.00018.57
8.1.300.0080.00819.61
8.1.290.0070.00330.84
8.1.280.0110.00030.84
8.1.270.0050.00530.84
8.1.260.0050.00530.84
8.1.250.0070.00230.84
8.1.240.0040.00730.84
8.1.230.0000.01130.84
8.1.220.0040.00830.84
8.1.210.0070.00730.84
8.1.200.0090.00330.84
8.1.190.0060.00630.84
8.1.180.0140.00030.84
8.1.170.0080.00430.84
8.1.160.0040.00730.84
8.1.150.0040.00730.84
8.1.140.0000.01230.84
8.1.130.0110.00330.84
8.1.120.0080.00830.84
8.1.110.0070.00730.84
8.1.100.0120.00430.84
8.1.90.0100.00730.84
8.1.80.0100.00530.84
8.1.70.0110.00430.84
8.1.60.0150.00430.84
8.1.50.0150.00030.84
8.1.40.0100.00730.84
8.1.30.0080.00830.84
8.1.20.0070.00730.84
8.1.10.0170.00030.84
8.1.00.0140.00930.84

preferences:
43.82 ms | 403 KiB | 5 Q