<?php function multiArrayCombine() { $transposed = array_map(null, ...func_get_args()); foreach ($transposed as &$set) { $set = array_merge(...array_filter($set)); } return $transposed; } $array1 = [['a' => 'val1'], ['a' => 'val2']]; $array2 = [['b' => 'val3'], ['b' => 'val4']]; $array3 = [['c' => 'val5'], [], ['c' => 'val6']]; var_export(multiArrayCombine($array1, $array2, $array3));
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