下面是一些代码，用于处理您最初建议作为输出的内容.

Here is some code to handle what you had originally proposed as output.

/**
 * Give it and array, and an array of parents, it will decent into the
 * nested arrays and set the value.
 */
function set_nested_value(array &$arr, array $ancestors, $value) {
  $current = &$arr;
  foreach ($ancestors as $key) {

    // To handle the original input, if an item is not an array, 
    // replace it with an array with the value as the first item.
    if (!is_array($current)) {
      $current = array( $current);
    }

    if (!array_key_exists($key, $current)) {
      $current[$key] = array();
    }
    $current = &$current[$key];
  }

  $current = $value;
}


$education = array(
  'x[1]'     => 'Georgia Tech',
  'x[1][1]'  => 'Mechanical Engineering',
  'x[1][2]'  => 'Computer Science',
  'x[2]'     => 'Agnes Scott',
  'x[2][1]'  => 'Religious History',
  'x[2][2]'  => 'Women\'s Studies',
  'x[3]'     => 'Georgia State',
  'x[3][1]'  => 'Business Administration',
);

$neweducation = array();

foreach ($education as $path => $value) {
  $ancestors = explode('][', substr($path, 2, -1));
  set_nested_value($neweducation, $ancestors, $value);
}

基本上，将您的数组键拆分为一个漂亮的祖先键数组，然后使用一个不错的函数使用这些父键将其划分为$ neweducation数组，并设置值.

Basically, split your array keys into a nice array of ancestor keys, then use a nice function to decent into the $neweducation array using those parents, and set the value.

如果您希望更新的帖子具有输出，请在"explode"行之后的foreach循环中添加此内容.

If you want the output that you have updated your post to have, add this in the foreach loop after the line with 'explode'.

$ancestors[] = 0;