3v4l.org

run code in 300+ PHP versions simultaneously
<?php function array_flatten($array, $allowedKeys = [], $result = []) { if(!is_array($array)) { return false; } foreach($array as $key => $value) { if(is_array($value)) { $result = array_flatten($value, $allowedKeys, $result); } else if(in_array($key, $allowedKeys)) { $result[$key] = $value; } } return $result; } $allowedKeys = [ 'firstname', 'middlename', 'street', 'lastname', 'housenumber', ]; $userdata = [ 'firstname' => 'first', 'middlename' => 'middle', 'lastname' => 'last', 'address' => [ 'street' => 'streeeeeet', 'housenumber' => '10' ] ]; $addresses = array_flatten($userdata, $allowedKeys); var_dump($addresses);

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)
8.3.60.0110.00416.75
8.3.50.0040.01516.63
8.3.40.0090.01318.70
8.3.30.0120.00618.66
8.3.20.0000.00820.30
8.3.10.0040.00422.04
8.3.00.0050.00323.66
8.2.180.0070.01118.16
8.2.170.0110.00618.84
8.2.160.0130.00622.96
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00820.93
8.2.120.0040.00426.35
8.2.110.0060.00321.03
8.2.100.0060.00617.84
8.2.90.0000.00819.34
8.2.80.0040.00818.16
8.2.70.0040.00417.38
8.2.60.0050.00317.93
8.2.50.0050.00318.22
8.2.40.0030.00620.55
8.2.30.0030.00619.32
8.2.20.0040.00418.13
8.2.10.0030.00618.19
8.2.00.0080.00017.99
8.1.280.0110.00725.92
8.1.270.0080.00022.19
8.1.260.0000.00726.35
8.1.250.0000.00828.09
8.1.240.0090.00022.62
8.1.230.0060.00617.70
8.1.220.0060.00317.74
8.1.210.0030.00618.77
8.1.200.0000.00817.35
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0100.00018.56
8.1.160.0040.00418.77
8.1.150.0000.00820.10
8.1.140.0030.00319.58
8.1.130.0000.00718.89
8.1.120.0030.00417.54
8.1.110.0000.00817.48
8.1.100.0060.00317.52
8.1.90.0000.00817.45
8.1.80.0000.00817.29
8.1.70.0040.00417.47
8.1.60.0080.00417.56
8.1.50.0070.00017.41
8.1.40.0030.00517.48
8.1.30.0080.00017.60
8.1.20.0040.00417.65
8.1.10.0030.00617.52
8.1.00.0000.00817.46
8.0.300.0000.00818.77
8.0.290.0000.00716.75
8.0.280.0000.00718.45
8.0.270.0030.00317.22
8.0.260.0030.00320.25
8.0.250.0000.00716.98
8.0.240.0000.00716.97
8.0.230.0070.00016.99
8.0.220.0000.00716.89
8.0.210.0030.00316.86
8.0.200.0070.00016.89
8.0.190.0070.00016.85
8.0.180.0040.00416.95
8.0.170.0040.00416.81
8.0.160.0000.00816.90
8.0.150.0040.00316.75
8.0.140.0060.00316.79
8.0.130.0030.00313.21
8.0.120.0040.00416.84
8.0.110.0040.00416.85
8.0.100.0000.00716.93
8.0.90.0050.00316.72
8.0.80.0090.00616.85
8.0.70.0070.00016.94
8.0.60.0040.00416.89
8.0.50.0020.00516.79
8.0.30.0080.01016.85
8.0.20.0110.01017.40
8.0.10.0040.00417.00
8.0.00.0180.00616.53
7.4.330.0000.00615.55
7.4.320.0000.00816.46
7.4.300.0000.00616.36
7.4.290.0030.00316.58
7.4.280.0070.00016.60
7.4.270.0030.00316.52
7.4.260.0000.00716.44
7.4.250.0000.00716.58
7.4.240.0040.00416.52
7.4.230.0000.00716.37
7.4.220.0070.01016.54
7.4.210.0090.00816.62
7.4.200.0070.00016.63
7.4.150.0120.00617.40
7.4.140.0130.00917.86
7.4.130.0100.01316.36
7.4.120.0100.00716.61
7.4.110.0120.00616.47
7.4.100.0090.01516.50
7.4.90.0130.00416.45
7.4.80.0130.01319.39
7.4.70.0040.01516.57
7.4.60.0110.00716.38
7.4.50.0030.01216.38
7.4.40.0030.01316.47
7.4.30.0120.00616.63
7.4.00.0040.01415.15
7.3.330.0000.00513.43
7.3.320.0030.00313.36
7.3.310.0040.00416.41
7.3.300.0000.00716.23
7.3.290.0080.01016.35
7.3.280.0090.00716.37
7.3.270.0120.00617.40
7.3.260.0120.00816.45
7.3.250.0120.00716.51
7.3.240.0110.00816.48
7.3.230.0100.00716.64
7.3.210.0170.00016.34
7.3.200.0070.01016.59
7.3.190.0080.00816.40
7.3.180.0030.01416.57
7.3.170.0150.00316.38
7.3.160.0110.00516.49
7.2.330.0100.00716.39
7.2.320.0090.00916.76
7.2.310.0030.01416.54
7.2.300.0030.01316.66
7.2.290.0080.00816.55
7.2.60.0060.00616.93
7.1.200.0040.01215.79
7.1.90.0000.01518.08
7.1.80.0000.01618.18
7.1.70.0070.00717.01
7.1.60.0180.01135.09
7.1.50.0260.01034.89
7.1.40.0260.00734.52
7.1.30.0250.00734.35
7.1.20.0130.02034.45
7.1.10.0110.00616.45
7.1.00.0030.00916.71
7.0.230.0030.01017.66
7.0.220.0030.01417.82
7.0.210.0040.00816.56
7.0.200.0030.01316.94
7.0.190.0030.01416.67
7.0.180.0120.00416.29
7.0.170.0030.01316.09
7.0.160.0080.00816.14
7.0.150.0060.00916.14
7.0.140.0080.00416.52
7.0.130.0080.00416.57
7.0.120.0000.01216.29
7.0.110.0030.00916.11
7.0.100.0090.00316.25
7.0.90.0000.01316.45
7.0.80.0030.00916.41
7.0.70.0030.00916.29
7.0.60.0060.00616.03
7.0.50.0060.00616.27
7.0.40.0060.00616.40
7.0.30.0060.00616.64
7.0.20.0030.00916.45
7.0.10.0040.00816.31
7.0.00.0000.01216.45

preferences:
57.87 ms | 400 KiB | 5 Q