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<?php $master_array = array(1, 2, 3, 4, 5, 6); $n = 2; // This is the number of columns / arrays $pattern_array = array(); $meta_array = array(); for ($i=1, $z=2*$n; $i <= $n; ++$i) { $pattern_array[$i] = $i; $pattern_array[$z-$i] = $i; $meta_array[] = array(); } foreach ($master_array as $i => $element) { $pattern_index = $i % $z; $meta_index = $pattern_array[$pattern_index] - 1; $meta_array[$meta_index][] = $element; } print_r($meta_array);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key 0 in /in/88jhN on line 17 Warning: Undefined array key 0 in /in/88jhN on line 17 Array ( [0] => Array ( [0] => 2 [1] => 4 [2] => 6 ) [1] => Array ( [0] => 3 ) [-1] => Array ( [0] => 1 [1] => 5 ) )
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 0 in /in/88jhN on line 17 Notice: Undefined offset: 0 in /in/88jhN on line 17 Array ( [0] => Array ( [0] => 2 [1] => 4 [2] => 6 ) [1] => Array ( [0] => 3 ) [-1] => Array ( [0] => 1 [1] => 5 ) )
Output for 7.3.32 - 7.3.33
Array ( [0] => Array ( [0] => 2 [1] => 4 [2] => 6 ) [1] => Array ( [0] => 3 ) [-1] => Array ( [0] => 1 [1] => 5 ) )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined offset: 0 in /in/88jhN on line 17 Notice: Undefined offset: 0 in /in/88jhN on line 17 Array ( [0] => Array ( [0] => 2 [1] => 4 [2] => 6 ) [1] => Array ( [0] => 3 ) [-1] => Array ( [0] => 1 [1] => 5 ) )

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265.35 ms | 403 KiB | 349 Q