如何将多个字符串拆分为深层嵌套数组？

Question

我有多个字符串类似于:

$str = "/One/Two";
$str2 = "/One/Two/Flowers";
$str3 = "/One/Two/Grass";
$str4 = "/One/Another/Deeper";
$str5 = "/Uno/Dos/Cow";

我想将它拆分为一个深层嵌套数组,看起来类似于以下内容:

Array
(
    [One] => Array 
    (
        [Two] => Array
        (
            [Flowers] => 
            [Grass] => 
        )    
        [Another] => Array
        (
            [Deeper] => 
        )           
    )   
    [Uno] => Array 
    (
        [Dos] => Array
        (
            [Cow] => 
        )             
    )         
)

Answer 1

这应该这样做:

$strings = array(
    "/One/Two",
    "/One/Two/Flowers",
    "/One/Two/Grass",
    "/One/Another/Deeper",
    "/Uno/Dos/Cow"

);

$result = array();

foreach($strings as $string) {
    $parts = array_filter(explode('/', $string));

    $ref = &$result;
    foreach($parts as $p) {
        if(!isset($ref[$p])) {
            $ref[$p] = array();
        }
        $ref = &$ref[$p];
    }
    $ref = null;
}

print_r($result);

工作范例:

http://codepad.org/GmAoXLXp