PHP - 使用点符号键将多维数组转换为二维数组 [英] PHP - Convert multidimensional array to 2D array with dot notation keys
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问题描述
有很多使用点表示法访问 PHP 数组的技巧和代码示例,但我想做一些相反的事情.我想采用这样的多维数组:
There are plenty of tips and code examples out there of accessing PHP arrays with dot notation, but I would like to do somewhat the opposite. I would like to take a multidimensional array like this:
$myArray = array(
'key1' => 'value1',
'key2' => array(
'subkey' => 'subkeyval'
),
'key3' => 'value3',
'key4' => array(
'subkey4' => array(
'subsubkey4' => 'subsubkeyval4',
'subsubkey5' => 'subsubkeyval5',
),
'subkey5' => 'subkeyval5'
)
);
并把它变成这个(可能通过一些递归函数):
And turn it into this (likely through some recursive function):
$newArray = array(
'key1' => 'value1',
'key2.subkey' => 'subkeyval',
'key3' => 'value3',
'key4.subkey4.subsubkey4' => 'subsubkeyval4',
'key4.subkey5.subsubkey5' => 'subsubkeyval5',
'key4.subkey5' => 'subkeyval5'
);
推荐答案
teh codez
$ritit = new RecursiveIteratorIterator(new RecursiveArrayIterator($myArray));
$result = array();
foreach ($ritit as $leafValue) {
$keys = array();
foreach (range(0, $ritit->getDepth()) as $depth) {
$keys[] = $ritit->getSubIterator($depth)->key();
}
$result[ join('.', $keys) ] = $leafValue;
}
输出
Array
(
[key1] => value1
[key2.subkey] => subkeyval
[key3] => value3
[key4.subkey4.subsubkey4] => subsubkeyval4
[key4.subkey4.subsubkey5] => subsubkeyval5
[key4.subkey5] => subkeyval5
)
演示:http://codepad.org/YiygqxTM
我得走了,但如果你明天需要解释,问我.
I need to go, but if you need an explanation of that tomorrow, ask me.
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