drqrdkfue521903877 2016-06-28 22:59
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PHP字符串到多级数组

How to convert this* string:

$arrKeys = ['lev1', 'lev2', 'lev3'];
$val = 'foo';

In to the following array:

Array
(
[lev1] => Array
    (
        [lev2] => Array
            (
                [lev3] => foo
            )

    )
)

*Number of array keys may vary. Each array key except the last one represents Array.

Thank you!

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3条回答 默认 最新

  • doushang1964 2016-06-28 23:13
    关注

    No recursion necessary:

    $arrKeys = array_reverse(['lev1', 'lev2', 'lev3']);
    $val = 'foo';
    
    $result = $val;
    
    foreach ($arrKeys as $key) {
        $result = [$key => $result];
    }
    
    print_r($result); 
    
    // Array
    // (
    //     [lev1] => Array
    //     (
    //         [lev2] => Array
    //         (
    //             [lev3] => foo
    //         )
    // 
    //     )
    // 
    // )
    

    Just build the array from the inside out.

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