3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array ( 'parent_id' => array ( 9 => array ( 0 => 11, 1 => 12 ), 10 => array ( 0 => 13, 1 => 14 ), 20 => array ( 0 => 21, 1 => 22 ), 21 => array ( 0 => 23 ) ) ); // re-index to 0 $array = array_values($array['parent_id']); // output array $pairs = array(); for ($i = 0; $i < count($array) - 1; $i += 2) { for ($j = 0; $j < min(count($array[$i]), count($array[$i+1])); $j++) { $pairs[] = array($array[$i][$j], $array[$i+1][$j]); } } print_r($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)
8.4.130.0110.00918.79
8.4.120.0160.00920.36
8.4.110.0110.00917.79
8.4.100.0140.00617.60
8.4.90.0100.01020.48
8.4.80.0080.01118.81
8.4.70.0110.00718.71
8.4.60.0110.01118.99
8.4.50.0120.00618.69
8.4.40.0130.00719.42
8.4.30.0070.01017.77
8.4.20.0070.01420.40
8.4.10.0100.00017.45
8.3.260.0110.00816.61
8.3.250.0030.00516.61
8.3.240.0050.00516.85
8.3.230.0130.00716.54
8.3.220.0100.00818.95
8.3.210.0110.00816.78
8.3.200.0070.00216.82
8.3.190.0120.00617.16
8.3.180.0090.00918.98
8.3.170.0090.00916.54
8.3.160.0110.00717.09
8.3.150.0070.01118.88
8.3.140.0120.00318.83
8.3.130.0030.00518.59
8.3.120.0080.00319.06
8.3.110.0060.00620.94
8.3.100.0100.01018.42
8.3.90.0120.00318.46
8.3.80.0060.00318.55
8.3.70.0040.01116.49
8.3.60.0090.00918.36
8.3.50.0120.00418.43
8.3.40.0040.01118.71
8.3.30.0110.00418.69
8.3.20.0070.00020.90
8.3.10.0040.00423.66
8.3.00.0070.00021.63
8.2.290.0110.00816.71
8.2.280.0110.00818.20
8.2.270.0090.00918.59
8.2.260.0090.00916.40
8.2.250.0030.00716.48
8.2.240.0040.00817.36
8.2.230.0060.00322.58
8.2.220.0060.00324.06
8.2.210.0040.01126.77
8.2.200.0050.00518.49
8.2.190.0150.00016.75
8.2.180.0100.00518.41
8.2.170.0130.00322.96
8.2.160.0030.01020.47
8.2.150.0080.00024.18
8.2.140.0090.00024.66
8.2.130.0000.01019.64
8.2.120.0040.00426.35
8.2.110.0090.00319.27
8.2.100.0080.00417.91
8.2.90.0020.00518.16
8.2.80.0030.00719.35
8.2.70.0040.00418.04
8.2.60.0060.00318.04
8.2.50.0000.00818.10
8.2.40.0000.00819.34
8.2.30.0000.00720.77
8.2.20.0000.00718.17
8.2.10.0070.00019.45
8.2.00.0000.00818.00
8.1.330.0130.00616.08
8.1.320.0110.00916.05
8.1.310.0040.01216.90
8.1.300.0030.01217.80
8.1.290.0110.00718.88
8.1.280.0170.00325.92
8.1.270.0040.00423.78
8.1.260.0020.00526.35
8.1.250.0040.00428.09
8.1.240.0060.00622.63
8.1.230.0050.00520.99
8.1.220.0030.00617.74
8.1.210.0020.00718.77
8.1.200.0000.00817.35
8.1.190.0040.00417.13
8.1.180.0040.00418.10
8.1.170.0050.00318.71
8.1.160.0050.00218.82
8.1.150.0000.00818.86
8.1.140.0040.00418.90
8.1.130.0070.00020.18
8.1.120.0060.00317.37
8.1.110.0000.00717.47
8.1.100.0080.00017.50
8.1.90.0050.00217.43
8.1.80.0040.00417.41
8.1.70.0000.00817.47
8.1.60.0040.00417.64
8.1.50.0000.00717.54
8.1.40.0000.00817.55
8.1.30.0000.00917.66
8.1.20.0060.00317.68
8.1.10.0000.00717.49
8.1.00.0030.00517.53
8.0.300.0050.00219.86
8.0.290.0000.00816.75
8.0.280.0070.00018.42
8.0.270.0040.00416.88
8.0.260.0030.00318.37
8.0.250.0030.00617.02
8.0.240.0030.00316.95
8.0.230.0070.00016.93
8.0.220.0000.00716.89
8.0.210.0040.00416.91
8.0.200.0000.00716.83
8.0.190.0030.00616.96
8.0.180.0070.00017.00
8.0.170.0040.00416.93
8.0.160.0050.00316.98
8.0.150.0030.00516.87
8.0.140.0080.00016.83
8.0.130.0000.00513.33
8.0.120.0000.00816.87
8.0.110.0000.00716.84
8.0.100.0040.00416.88
8.0.90.0000.00716.80
8.0.80.0050.01616.83
8.0.70.0040.00416.95
8.0.60.0040.00416.79
8.0.50.0040.00416.89
8.0.30.0040.01517.29
8.0.20.0030.01617.04
8.0.10.0040.00416.86
8.0.00.0120.00716.70
7.4.330.0030.00316.63
7.4.320.0030.00316.39
7.4.300.0060.00016.69
7.4.290.0080.00016.62
7.4.280.0000.00716.45
7.4.270.0070.00016.54
7.4.260.0000.00716.53
7.4.250.0030.00516.60
7.4.240.0000.00716.68
7.4.230.0040.00416.63
7.4.220.0040.00416.64
7.4.210.0100.00816.62
7.4.200.0030.00316.41
7.4.160.0100.00716.57
7.4.140.0090.00917.86
7.4.130.0100.00716.57
7.4.120.0090.00916.52
7.4.110.0130.00316.53
7.4.100.0150.00616.46
7.4.90.0060.01116.65
7.4.80.0070.01019.39
7.4.70.0100.00616.34
7.4.60.0060.01016.50
7.4.50.0080.00316.61
7.4.40.0160.00616.45
7.4.00.0090.00714.83
7.3.330.0000.00613.27
7.3.320.0000.00613.25
7.3.310.0000.00716.44
7.3.300.0030.00516.35
7.3.290.0100.00316.41
7.3.280.0070.01016.31
7.3.260.0090.01016.40
7.3.240.0100.00816.57
7.3.230.0100.00616.36
7.3.210.0160.00016.46
7.3.200.0130.00316.43
7.3.190.0060.00916.34
7.3.180.0120.01016.51
7.3.170.0070.01016.48
7.3.160.0160.00016.46
7.3.120.0090.00914.58
7.3.110.0040.01414.85
7.3.100.0060.00914.97
7.3.90.0000.01314.99
7.3.80.0000.01114.46
7.3.70.0030.00714.86
7.3.60.0080.00314.79
7.3.50.0100.00714.73
7.3.40.0080.01014.91
7.3.30.0100.00514.68
7.3.20.0090.00915.80
7.3.10.0060.00815.68
7.3.00.0100.00815.74
7.2.330.0060.01316.72
7.2.320.0170.00316.51
7.2.310.0050.01116.65
7.2.300.0180.00616.72
7.2.290.0080.01416.73
7.2.250.0060.01314.99
7.2.240.0060.00914.79
7.2.230.0040.01515.23
7.2.220.0070.00315.22
7.2.210.0110.00715.28
7.2.200.0000.01115.15
7.2.190.0000.01015.12
7.2.180.0070.01515.09
7.2.170.0090.00714.99
7.2.160.0080.00315.16
7.2.150.0070.01015.21
7.2.140.0180.00615.04
7.2.130.0130.00314.96
7.2.120.0160.00915.05
7.2.110.0150.00014.86
7.2.100.0170.00715.00
7.2.90.0190.00614.99
7.2.80.0090.00615.17
7.2.70.0040.00914.90
7.2.60.0150.00415.11
7.2.50.0150.01015.00
7.2.40.0120.00614.91
7.2.30.0170.01415.04
7.2.20.0150.00915.14
7.2.10.0140.00015.16
7.2.00.1450.01015.15
7.1.330.0000.01315.77
7.1.320.0070.00715.80
7.1.310.0090.00615.93
7.1.300.0060.00615.81
7.1.290.0060.00915.67
7.1.280.0080.00714.89
7.1.270.0050.00714.84
7.1.260.0050.00814.96
7.1.250.0060.00814.05

preferences:
91.69 ms | 403 KiB | 5 Q