3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getPairs($array) { $n = count($array); $finalArray = []; $i = 0; foreach ($array as $a) { for ($x = $n-1; $i < $x; $x--) { $key1 = array_keys($array)[$i]; $key2 = array_keys($array)[$x]; $finalArray[$key1.$key2] = [$array[$key1], $array[$key2]]; } $i++; } return $finalArray; } $arr1 = 'arr1'; $arr2 = 'arr2'; $arr3 = 'arr3'; $merged = [ 'a'=> $arr1, 'b'=> $arr2, 'c'=> $arr3 ]; $pairs = getPairs($merged); print_r($pairs);

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)
8.3.60.0100.01016.75
8.3.50.0170.00722.01
8.3.40.0150.00618.79
8.3.30.0070.00718.59
8.3.20.0070.00020.29
8.3.10.0050.00321.48
8.3.00.0000.00822.45
8.2.180.0120.00318.00
8.2.170.0040.01122.96
8.2.160.0040.01219.50
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0050.00222.11
8.2.120.0070.00026.35
8.2.110.0090.00019.40
8.2.100.0040.00717.78
8.2.90.0080.00019.27
8.2.80.0000.00917.97
8.2.70.0030.00617.75
8.2.60.0040.00417.93
8.2.50.0040.00818.10
8.2.40.0000.00822.23
8.2.30.0000.00719.22
8.2.20.0000.00717.79
8.2.10.0040.00418.10
8.2.00.0050.00317.69
8.1.280.0120.00325.92
8.1.270.0040.00424.66
8.1.260.0070.00028.09
8.1.250.0000.00728.09
8.1.240.0060.00321.37
8.1.230.0080.00317.46
8.1.220.0030.00517.74
8.1.210.0030.00518.77
8.1.200.0080.00017.35
8.1.190.0040.00417.35
8.1.180.0080.00018.10
8.1.170.0070.00718.41
8.1.160.0000.00722.06
8.1.150.0040.00418.86
8.1.140.0040.00419.56
8.1.130.0030.00317.68
8.1.120.0040.00417.48
8.1.110.0020.00517.39
8.1.100.0000.00817.50
8.1.90.0060.00317.51
8.1.80.0000.00717.43
8.1.70.0070.00017.44
8.1.60.0030.00517.59
8.1.50.0050.00317.54
8.1.40.0040.00417.39
8.1.30.0030.00517.62
8.1.20.0040.00417.55
8.1.10.0020.00517.53
8.1.00.0050.00317.47
8.0.300.0000.00818.77
8.0.290.0000.00816.63
8.0.280.0070.00018.54
8.0.270.0030.00317.24
8.0.260.0030.00316.73
8.0.250.0000.00716.80
8.0.240.0030.00316.95
8.0.230.0040.00416.84
8.0.220.0000.00616.87
8.0.210.0000.00616.81
8.0.200.0000.00616.95
8.0.190.0030.00516.94
8.0.180.0000.00716.91
8.0.170.0050.00316.80
8.0.160.0000.00716.81
8.0.150.0070.00016.70
8.0.140.0000.00716.91
8.0.130.0030.00313.34
8.0.120.0040.00416.89
8.0.110.0050.00316.90
8.0.100.0020.00516.83
8.0.90.0050.00316.93
8.0.80.0040.01116.92
8.0.70.0070.00016.71
8.0.60.0050.00316.94
8.0.50.0000.00716.73
8.0.30.0080.01216.97
8.0.20.0080.01217.40
8.0.10.0040.00416.87
8.0.00.0130.00516.63
7.4.330.0000.00515.14
7.4.320.0000.00716.42
7.4.300.0030.00316.41
7.4.290.0040.00416.47
7.4.280.0090.00016.47
7.4.270.0040.00416.51
7.4.260.0030.00316.52
7.4.250.0000.00716.44
7.4.240.0040.00416.59
7.4.230.0000.00716.61
7.4.220.0060.01216.61
7.4.210.0090.00616.59
7.4.200.0060.00316.52
7.4.160.0080.00816.55
7.4.150.0110.00717.40
7.4.140.0050.01217.86
7.4.130.0080.01116.38
7.4.120.0050.01216.50
7.4.110.0030.01416.45
7.4.100.0070.01016.44
7.4.90.0150.00316.47
7.4.80.0110.00719.39
7.4.70.0150.00616.39
7.4.60.0130.00316.32
7.4.50.0030.01516.51
7.4.40.0030.01316.69
7.4.30.0060.01316.69
7.4.00.0110.00715.01
7.3.330.0020.00213.32
7.3.320.0030.00313.19
7.3.310.0000.00816.28
7.3.300.0000.00716.33
7.3.290.0040.00916.40
7.3.280.0070.01116.37
7.3.270.0090.00917.40
7.3.260.0120.01016.29
7.3.250.0120.00516.39
7.3.240.0110.01316.49
7.3.230.0140.00316.58
7.3.210.0100.00616.44
7.3.200.0110.00516.42
7.3.190.0080.00816.39
7.3.180.0150.00616.48
7.3.170.0100.00716.27
7.3.160.0080.00816.35
7.3.120.0090.00614.66
7.3.110.0070.00714.73
7.3.100.0000.01714.99
7.3.90.0130.00314.76
7.3.80.0080.00814.73
7.3.70.0070.01014.73
7.3.60.0000.01114.79
7.3.50.0030.00714.50
7.3.40.0110.00314.71
7.3.30.0040.00714.87
7.3.20.0100.00316.52
7.3.10.0120.00316.78
7.3.00.0070.00716.84
7.2.330.0000.02016.86
7.2.320.0080.01516.37
7.2.310.0120.00616.60
7.2.300.0030.01316.43
7.2.290.0140.00316.88
7.2.240.0060.00615.09
7.2.230.0060.00914.97
7.2.220.0120.00414.89
7.2.210.0110.00714.86
7.2.200.0080.00414.82
7.2.190.0080.00814.88
7.2.180.0030.01215.16
7.2.170.0100.00314.95
7.2.160.0070.00715.00
7.2.150.0000.01416.76
7.2.140.0000.01016.79
7.2.130.0150.00016.77
7.2.120.0030.01316.80
7.2.110.0000.01316.95
7.2.100.0070.01116.89
7.2.90.0140.00417.11
7.2.80.0110.00416.90
7.2.70.0140.00316.89
7.2.60.0060.00816.86
7.2.50.0030.00716.91
7.2.40.0040.01216.96
7.2.30.0040.01116.98
7.2.20.0040.00817.01
7.2.10.0070.01116.82
7.2.00.0090.00518.00
7.1.330.0030.01415.68
7.1.320.0040.01115.76
7.1.310.0000.01715.78
7.1.300.0040.01115.67
7.1.290.0000.01015.68
7.1.280.0080.00915.75
7.1.270.0080.00815.62
7.1.260.0100.00715.68
7.1.250.0000.01115.84
7.1.200.0060.00615.75
7.1.70.0140.00717.21
7.1.60.0000.01217.33
7.1.00.0030.07722.36
7.0.200.0050.00316.73
7.0.100.1100.05319.91
7.0.90.0200.05319.95
7.0.80.0170.06719.98
7.0.70.0300.05319.98
7.0.60.1000.04719.98
7.0.50.1470.05720.41
7.0.40.1900.05320.31
7.0.30.1030.05720.27
7.0.20.0170.06720.30
7.0.10.0030.09720.36
7.0.00.0200.07320.43
5.6.250.0030.06320.66
5.6.240.0200.04720.52
5.6.230.0170.05320.51
5.6.220.0000.06320.68
5.6.210.0130.05020.63
5.6.200.0070.06321.09
5.6.190.0130.05321.11
5.6.180.0170.07021.07
5.6.170.0130.06721.06
5.6.160.0130.06021.02
5.6.150.0170.07321.08
5.6.140.0170.07321.00
5.6.130.0100.08021.02
5.6.120.0200.09021.12
5.6.110.0100.07321.07
5.6.100.0100.06321.07
5.6.90.0070.06721.12
5.6.80.0100.05320.59
5.6.70.0070.05720.46
5.6.60.0100.07320.51
5.6.50.0130.05020.43
5.6.40.0070.05720.44
5.6.30.0100.05020.46
5.6.20.0170.04720.50
5.6.10.0100.05020.48
5.6.00.0000.06320.44

preferences:
69.74 ms | 401 KiB | 5 Q