3v4l.org

run code in 300+ PHP versions simultaneously
<?php function multiKeyIt($array, $numKeys) { $multiKeyed = []; foreach($array as $row) { if(!isset($countFields)) { $countFields = count($row); } $arrRef = &$multiKeyed; $theKey = reset($row); for($k = 0; $k < $numKeys; $k++) { if(!isset($arrRef[$theKey])) { $arrRef[$theKey] = array(); } $arrRef = &$arrRef[$theKey]; $theKey = next($row); } //$arrRef = $countFields > $numKeys + 1 ? array_merge($arrRef, array_slice($row,$numKeys)) : implode(', ', array_slice($row,$numKeys)); $arrRef = array_merge($arrRef, array_slice($row,$numKeys)); } return $multiKeyed; } $arr =[ ['key'=>'val_k1', 'val2', 'key1_2'=>'val_d1_2', 'key2_2'=>'val_d2_2'], ['key'=>'val_k1', 'val3', 'key1_3'=>'val_d1_3', 'key2_3'=>'val_d2_3'], ['key'=>'val_kx1', 'val3', 'key1_3'=>'val_d1_x3', 'key2_3'=>'val_d2_3'], ]; echo "<pre>"; $da = multiKeyIt($arr, 1); echo "\n!da(1)=".print_r($da,true); $da = multiKeyIt($arr, 2); echo "\n!da(2)=".print_r($da,true); $da = multiKeyIt($arr, 3); echo "\n!da(3)=".print_r($da,true); $da = multiKeyIt($arr, 4); echo "\n!da(4)=".print_r($da,true); $da = multiKeyIt($arr, 5); echo "\n!da(5)=".print_r($da,true); $da = multiKeyIt($arr, 6); echo "\n!da(6)=".print_r($da,true); echo "</pre>";

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)
8.3.60.0030.01318.55
8.3.50.0140.00316.51
8.3.40.0060.00918.79
8.3.30.0090.00618.82
8.3.20.0040.00419.12
8.3.10.0040.00420.94
8.3.00.0080.00019.79
8.2.180.0170.01316.50
8.2.170.0090.00622.96
8.2.160.0090.01219.01
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0030.00519.77
8.2.120.0070.00726.35
8.2.110.0070.01122.11
8.2.100.0000.01217.90
8.2.90.0000.00817.75
8.2.80.0040.00418.91
8.2.70.0040.00417.87
8.2.60.0030.00617.93
8.2.50.0060.00318.10
8.2.40.0080.00019.26
8.2.30.0000.00719.55
8.2.20.0000.00718.22
8.2.10.0030.00518.21
8.2.00.0040.00419.60
8.1.280.0070.00725.92
8.1.270.0000.00822.15
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00423.89
8.1.230.0110.00019.15
8.1.220.0000.00817.74
8.1.210.0000.00918.77
8.1.200.0080.00017.35
8.1.190.0040.00417.35
8.1.180.0030.00618.10
8.1.170.0060.00318.47
8.1.160.0040.00418.91
8.1.150.0000.00718.86
8.1.140.0040.00417.64
8.1.130.0080.00019.04
8.1.120.0000.00717.52
8.1.110.0060.00417.49
8.1.100.0040.00417.53
8.1.90.0050.00317.44
8.1.80.0000.01017.46
8.1.70.0070.00017.50
8.1.60.0000.00817.63
8.1.50.0080.00017.56
8.1.40.0030.00617.40
8.1.30.0000.00917.62
8.1.20.0030.00517.67
8.1.10.0000.00817.63
8.1.00.0020.00517.43
8.0.300.0040.00419.65
8.0.290.0000.00816.88
8.0.280.0000.00718.48
8.0.270.0030.00317.31
8.0.260.0040.00417.21
8.0.250.0030.00317.00
8.0.240.0060.00317.04
8.0.230.0030.00317.00
8.0.220.0090.00016.92
8.0.210.0000.00816.92
8.0.200.0080.00016.88
8.0.190.0030.00616.98
8.0.180.0060.00316.96
8.0.170.0000.00816.91
8.0.160.0000.00716.96
8.0.150.0000.00816.89
8.0.140.0000.00716.89
8.0.130.0000.00913.44
8.0.120.0000.00716.79
8.0.110.0080.00016.83
8.0.100.0040.00416.93
8.0.90.0030.00616.89
8.0.80.0110.01116.87
8.0.70.0030.00516.92
8.0.60.0040.00416.71
8.0.50.0040.00416.76
8.0.30.0110.00917.06
8.0.20.0100.00917.40
8.0.10.0040.00417.05
8.0.00.0070.01016.98
7.4.330.0020.00215.55
7.4.320.0030.00316.56
7.4.300.0060.00016.67
7.4.290.0070.00016.67
7.4.280.0040.00416.66
7.4.270.0000.00816.71
7.4.260.0040.00416.64
7.4.250.0000.00716.61
7.4.240.0040.00416.55
7.4.230.0000.00816.38
7.4.220.0030.00516.37
7.4.210.0090.00616.64
7.4.200.0040.00416.47
7.4.160.0090.00716.59
7.4.140.0140.00417.86
7.4.130.0090.01216.56
7.4.120.0100.01216.60
7.4.110.0070.01116.53
7.4.100.0070.01016.67
7.4.90.0100.00716.64
7.4.80.0090.01219.39
7.4.70.0080.00816.64
7.4.60.0130.00416.45
7.4.50.0130.00316.45
7.4.40.0210.00316.78
7.4.00.0000.01614.92
7.3.330.0050.00013.41
7.3.320.0050.00013.38
7.3.310.0050.00216.43
7.3.300.0040.00416.40
7.3.290.0000.00716.48
7.3.280.0130.00416.41
7.3.260.0110.01116.60
7.3.240.0140.00616.55
7.3.230.0130.00416.49
7.3.210.0100.01516.60
7.3.200.0150.00016.73
7.3.190.0130.00316.40
7.3.180.0120.00316.40
7.3.170.0090.00916.63
7.3.160.0120.00516.61
7.3.00.0080.00416.76
7.2.330.0130.00616.85
7.2.320.0090.00916.88
7.2.310.0110.00816.80
7.2.300.0150.01216.88
7.2.290.0120.00616.82
7.2.130.0000.01216.82
7.2.120.0070.00716.91
7.2.110.0070.00417.11
7.2.100.0070.00717.04
7.2.90.0040.01116.92
7.2.80.0060.00616.94
7.2.70.0070.01016.64
7.2.60.1290.01216.03
7.2.50.1200.01016.08
7.2.40.1360.01316.24
7.2.30.1250.00616.18
7.2.20.1300.01316.20
7.2.10.0920.00616.20
7.2.00.1020.00816.16
7.1.250.0040.00715.94
7.1.240.0030.00615.83
7.1.230.0040.01115.82
7.1.220.0000.01315.63
7.1.210.0070.00715.90
7.1.200.0060.00515.68
7.1.190.0090.00615.77
7.1.180.0040.01115.73
7.1.170.1410.00814.98
7.1.160.1200.01316.37
7.1.150.1160.01116.33
7.1.140.1150.01116.36
7.1.130.0900.01116.41
7.1.120.1060.00916.40
7.1.110.0920.00716.15
7.1.100.1120.00915.86
7.1.90.1170.00915.94
7.1.80.0840.00915.86
7.1.70.1080.00515.52
7.1.60.1360.01124.67
7.1.50.1510.00824.45
7.1.40.1140.01324.21
7.1.30.1230.01224.30
7.1.20.1260.00824.35
7.1.10.0910.01315.36
7.1.00.1210.00615.20
7.0.330.0140.00315.38
5.6.380.0030.00614.29

preferences:
61.83 ms | 401 KiB | 5 Q