Question

我想从：

A,A,A,A
A,A,A,B
A,A,B,A
A,A,B,B
A,B,A,A
A,B,A,B
A,B,B,A
A,B,B,B
B,A,A,A
B,A,A,B
B,A,B,A
B,A,B,B
B,B,A,A
B,B,A,B
B,B,B,A
B,B,B,B

到：

Array (
[A] => Array
    (
    [A] => Array
        (
        [A] => Array
            (
            [A] => A,
            [B] => B
        [B] => Array
            (
            [A] => A,
            [B] => B
    [B] => Array
        (
        [A] => Array
            (
            [A] => A,
            [B] => B
        [B] => Array
            (
            [A] => A,
            [B] => B
[B] => Array
    (
    [A] => Array
        (
        [A] => Array
            (
            [A] => A,
            [B] => B
        [B] => Array
            (
            [A] => A,
            [B] => B
    [B] => Array
        (
        [A] => Array
            (
            [A] => A,
            [B] => B
        [B] => Array
            (
            [A] => A,
            [B] => B

Answer 1

我可能会后悔，但我很无聊。假设你有一个CSV文件，如果没有，那么explode()上的\n CSV字符串或其他：

$lines = file('/path/to/csv.txt');

$array = array();

foreach($lines as $line) {
    $temp  = &$array;

    $path  = str_getcsv($line);
    $value = array_pop($path);

    foreach($path as $key) {
        $temp =& $temp[$key];
    }
    $temp[$value] = $value;
}

print_r($array);

Answer 2

您可以通过拆分换行符将字符串转换为行数组。

然后遍历行并用逗号分隔。您想要的多维数组将通过使用CSV行中的每个值作为结果中较低级别的键来实现。

foreach (explode("\n", $csv_str) as $row) {
    $row = explode(',', $row);
    $result[$row[0]][$row[1]][$row[2]][$row[3]] = $row[3];
}

从csv到多维数组（php）

2 个答案: