dshtze500055 2019-04-08 15:01

# 将子数组值组合到数组中的单个数组中

I may not word this issue properly, so here's what am trying to achieve.

array {
[0]=> {
["Abilities"]=> { ["Numerical"]=> 3 }
}
[1]=> {
["Abilities"]=> { ["Verbal"]=> 1 }
}
[2]=> {
["Domain"]=> { ["Programming"]=> 0 }
}
}

to

array {
[0]=> {
["Abilities"]=> { ["Numerical"]=> 3 ["Verbal"]=> 1 }
}
[1]=> {
["Domain"]=> { ["Programming"]=> 0 }
}
}

I get this array from an external source so I need optimized this way to use it.

• 写回答

#### 1条回答默认 最新

• drls2738 2019-04-08 18:42
关注

The array you're getting from an external source is like a set of separate branches you need to merge into a single tree. You can use a recursive function to create the "optimized" structure you're going for. A recursive approach should work regardless of the depth of each branch.

function merge_branches(array \$branches): array
{
\$merge = function (\$node, &\$tree) use (&\$merge) {
if (is_array(\$value = reset(\$node))) {
\$merge(\$value, \$tree[key(\$node)]);        // merge branch node recursively
} else {
\$tree[key(\$node)] = \$value;               // set leaf node to value
}
};

\$tree = [];
foreach (\$branches as \$branch) {
\$merge(\$branch, \$tree);
}
return \$tree;
}

\$optimized = merge_branches(\$external);

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