所以我想从文本文件动态构建一个多维数组,除了数字键把我搞砸了之外,一切都很完美......
文本文件看起来像这样:
a=1
b.c=2
b.d.0.e=3
b.d.0.f=4
b.d.1.e=5
b.d.1.f=6
由于 array_merge_recursive 不适用于数字键,因此输出如下:
array(2) {
["a"]=>
string(3) "1"
["b"]=>
array(2) {
["c"]=>
string(3) "2"
["d"]=>
array(4) {
[0]=>
array(1) {
["e"]=>
string(9) "3"
}
[1]=>
array(1) {
["f"]=>
string(4) "4"
}
[2]=> array(1) {
["e"]=>
string(8) "5"
}
[3]=>
array(1) {
["f"]=>
string(9) "6"
}}}}
是否有任何简单的解决方案可以使输出像...?
array(2) {
["a"]=>
string(3) "1"
["b"]=>
array(2) {
["c"]=>
string(3) "2"
["d"]=>
array(2) {
[0]=>
array(2) {
["e"]=>
string(9) "3"
["f"]=>
string(4) "4"
}
[1]=>
array(3) {
["e"]=>
string(9) "5"
["f"]=>
string(4) "6"
}}}}
谢谢
最佳答案
您可以将每一位分解为其组件,并一次一步地构建数组。
$path = "b.d.0.e";
$val = 3;
$output = array();
$parts = explode(".", $path);
// store a pointer to where we currently are in the array.
$curr =& $output;
// loop through up to the second last $part
for ($i = 0, $l = count($parts); $i < $l - 1; ++$i) {
$part = $parts[$i];
// convert numeric strings into integers
if (is_numeric($part)) {
$part = (int) $part;
}
// if we haven't visited here before, make an array
if (!isset($curr[$part])) {
$curr[$part] = array();
}
// jump to the next step
$curr =& $curr[$part];
}
// finally set the value
$curr[$parts[$l - 1]] = $val;
我的输出,使用与您相同的输入:
Array (
[a] => 1
[b] => Array (
[c] => 2
[d] => Array (
[0] => Array (
[e] => 3
[f] => 4
)
[1] => Array (
[g] => 5
[h] => 6
)
)
)
)
关于带数字键的 PHP array_merge_recursive,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2049286/